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2001 Isuzu Truck Trooper LS 4WD V6-3.5L
Vehicle Level Engine, Cooling and Exhaust Engine Intake Manifold Technical Service Bulletins Engine - Intake Manifold Bolt Torque Revision
Engine - Intake Manifold Bolt Torque Revision
TSB SB03-01-S003
Gasket Intake Manifold to Cylinder Head Bolt Torque Specifications (Service Manual Revision)
ISSUE DATE: JULY, 2003
Affected Vehicles
1998-2003 Isuzu models equipped with a 3.2L or 3.5L engine.
Service Information
2001 Isuzu Truck Trooper LS 4WD V6-3.5L
Vehicle Level Technical Service Bulletins All Technical Service Bulletins Electronic Throttle Control - Code Diagnosis
Electronic Throttle Control - Code Diagnosis
BULLETIN NUMBER:
IB00-04-S006
ISSUE DATE:
DECEMBER 2000
GROUP:
ELECTRICAL
2000 - 2001 ISUZU V-6 ELECTRONIC THROTTLE CONTROL
AFFECTED VEHICLES
All 2000 - 2001 Isuzu V-6 engines with Electronic Throttle Control.
SERVICE INFORMATION
All 2000 - 2001 Isuzu V-6 engines with Electronic Throttle Control may exhibit multiple codes for any condition identified in the Accelerator Pedal Assembly and/or the Throttle Assembly. In order to clarify the diagnostics available with the Tech 2 and the PowerLink, this bulletin will present four possible symptoms that actually help identify the root cause.
The Isuzu Electronic Throttle Control System will usually set multiple codes no matter which driveability symptoms are present. To best diagnose the condition, the service advisor and technician should ask the customer when the MIL and Reduced Power Light sets and if any driveability symptoms were present. The most common codes associated with their respective sensor and/or throttle motor circuits are shown.
The four most common symptoms associated with Electronic Throttle are:
^ The Reduced Power Light may be on with the MIL on/off with no driveability symptoms existing at the time of code detection or during diagnostics. Usually P1271, P1273 and P1275 are stored in memory. The code(s) set at key-up and are related to correlation errors. Remember, when the TP1 and the TP2 or the AP1 and the AP2 actual readings are added together, the total should be 100%. If the variation is at or exceeds 5%, a P1275 may set. In order to duplicate the condition, install the Tech 2 or the PowerLink and perform a quick-snapshot prior to the initial cold start. Look for a glitch on the AP1 reading
^ The second complaint will usually be related to the MIL and Reduced Power Light with codes for throttle position sensors or accelerator position sensors. The customer will also complain of lack-of-power. This condition is most likely related to loss of a five-volt reference. Therefore one AP sensor and one TP sensor are affected. A P1275 is definitely present.
^ The third complaint will also be related to the Reduced Power Light being on, the MIL on and the vehicle in a "Forced Idle" mode. This may be related to loss of both five-volt references, loss of both AP sensor readings, and/or loss of both TP sensor readings.
^ The final complaint is also related to a Reduced Power Light present. the MIL on, and a forced shut-down condition. The vehicle will crank but will not start. This condition may be related to a Throttle Motor condition and/or the loss of either or both five-volt references for the Throttle Position Sensors and the Accelerator Position Sensors.
Use this bulletin as a guide in determining the direction and starting point of diagnostics for the Isuzu V-6 Electronic Throttle Systems.
The following information has been revised in the Engine section of the Service Manual. Use the torque chart when installing the Intake Manifold to the Cylinder Head.
NOTE: Information released on paper and electronic format prior to bulletin release cannot be updated. For the most current and up to date information refer to ISUZUONE. com.
Have you checked to see if any codes were set....some may be in memory but not lighting the check engine light (CEL).
First I would check ALL vacuum lines including emission lines for cuts, holes, burn throughs etc; before assuming it is a gasket problem. I should have told you to start the vehicle and have it idling (highest intake suction condition) when you spray the intake to gasket to head sealing areas with wd-40. Upon doing this, if you hear or feel a change in the idle (roughness or improvement or a change in idle rpm), that would indicate a gasket problem. I am very leery about some mechanics who might suggest using any other compound (gasoline or ether) instead of an inert substance like wd-40 or similar substance. Using a fuel type substance might substantially increase the detection odds for an intake leak, but such flammable materials can pose an even greater burn hazard to you and the vehicle. Please do not use any flammable material to check.
Although it was a common problem for Isuzus in general, for your year vehicle, I could find no intake gasket Technical Service bulletins.
There is another bulletin about the accelerator position sensor, but only applies if a code is set (The engine may occasionally experience idle fluctuation and/ or the MIL(malfunction indicator light) will illuminate because an accelerator position sensor (APS) DTC is set; P1271, P1273, P1275, P1280, or P1285. Also the Reduced Power light may be on.
In the event it is a gasket leak, the info previously supplied might help about torque for the manifold bolts.
good luck
So far, no codes have set off the CEL. I'll have to run down a place for a code check. Living in the boondocks makes things a little more interesting with diagnostic problems-can't hop down the street to the local Autozone for a code check. Should probably get a code reader for the shop.
In any case, appreciate all the information. I'll post when I finally run this critter down.
Tim
I thought I did my research before my purchase but not enough. When my engine locked ISUZU did NOTHING. My mechanic suggested I google search "ISUZU PROBLEMS/ENGINE and WOW what a surprise! I printed various complaints, called Isuzu HQ and my Rep was never in his office. What kills me is that they know of the problems
So Far I've had:
3-gas cap sensors
1-Engine(DRINKS way too much OIL) I now check my oil every 500 miles and change it every 2500 miles
Tranny
My vacuum switch keeps going out on the TOD
My A/C is horrible
And yes I took care of my Trooper, regular oil changes anytime a light came on I was taking it to the dealership...Which never could find anything wrong. I had no warning about the engine it locked up on me while on the highway.
I could keep going on but I wont I say stay away! Definitely do a google search this will help make your decision I hope.
I want to get rid of the piece of crap so bad I struggle everyday when I drive it whether to trade or keep
Good Luck :sick:
My transmission wnet bad around 60k, but Isuzu put in a new one with no hassles (I did have to pay $515 for some electronic selector sensor which was not covered). In the life of the truck I replaced the original shocks at 5K, added stabilizers around the same time, and put Michelins on at 40k.
Last week, in celebration of the Trooper's birthday, I bought it a tank of premium (it couldn't care less), had it detailed, and had the timing belt, serpentine belt, water pump, gas filter, hoses and plugs replaced, the injectors cleaned, and the cooling system, EGK, and transmission flushed (all around $1500 at the dealer, who I return to only because of the 10/120 warranty. This will be my last visit, then I'll return to my old trusted mechanic who kept my Nissan pickup running well past it's expiration date and 300k.....).
I love the subtle classy look of my Trooper -it's timeless in the Land Rover-old Landcruiser sort of way. Simple front end, simple back end, simple profile.
Yes, I wish it could get better gas mileage (16 mpg, but I drive like a maniac, then hit bumper-to-bumper in my daily grind...). I wish I had more confidence in the dealer (a combo Isuzu-Lincoln/Mercury dealer - talk about picking the worst sales combo out there!) or even Isuzu USA - they've really dropped the ball these past 6 years.
Back then, even at the tail end of the SUV craze, they had the Trooper, Axiom, and Rodeo. In years prior, they made some decent sporty cars, like the Impulse, turbo I-mark. It's a shame, really.
Anyway, I suggest you go for it...I've found to be a great vehicle overall.
Just got stranded for the first time ever by one of my Troopers. Dealer replaced manifold gasket flushed Transmission and said no worries. Drove car from Phila. to Maryland, 60 miles, and as I pulled into town same problem all over. 02 LS 4WD 107K. Regular Mobil One changes, other then the TOD sensor needing replacement twice. no other problems. Is this an extension fo the Manifold issue or something worse? Like my Troop way to much but am starting to worry. Any advice greatly appreciated post and answer or send me an email. thanks.
2002 Isuzu Truck Trooper LS 4WD V6-3.5L
Vehicle Level Transmission and Drivetrain Technical Service Bulletins All Technical Service Bulletins A/T - Flushing Procedures
A/T - Flushing Procedures
BULLETIN NUMBER:
IB02-05-S004
ISSUE DATE:
NOVEMBER 2002
GROUP:
TRANSMISSION
AUTOMATIC TRANSMISSION FLUSHING PROCEDURES
AFFECTED VEHICLES
All current Isuzu vehicles with automatic transmissions that requires a transmission replacement.
SERVICE INFORMATION
As part of the normal repair procedure for replacement of the automatic transmission, flushing the transmission cooler and associated lines/pipes must be performed.
To avoid a second failure, the flushing procedure is required to insure that all debris and contaminants including metal, band material and burnt transmission fluid are removed prior to installation of the new transmission. The flush procedure is part of the replacement procedure and if not properly performed will often result in immediate failure of the replacement transmission.
The flushing procedure should be completed using a Transmission Cooling System Flusher (J-35944 or equivalent) to insure that all of the pipes and cooler are reverse flushed.
Follow the flushing procedure provided by the manufacturer of your flushing equipment. These procedures should be used as a standard practice after removing a defective transmission:
1. After removing the defective transmission, identify the two transmission cooler lines. Identify which line is the outlet and which line is the return line to the transmission cooler.
2. Attach the flush machine so that the flow of flush solution is the reverse of the transmission fluid flow. Be sure to use only approved Oil Cooler Flushing Fluid.
3. After the flushing procedure is complete and the replacement transmission has been installed a flow test must be completed.
FLOW TEST PROCEDURES
Important :The Flow Test must he performed after the flush to ensure that all flushing solution and water is removed from the system.
1. Connect a hose from the transmission cooler return outlet side to an empty container capable of measuring fluid level. (Figure 1)
2. Confirm the transmission is filled with automatic transmission fluid. Refer to Fluid Capacity Specifications in the workshop manual for the correct automatic transmission fluid capacity.
3. Start the engine with the transmission in Park range and run for 30 seconds after fluid begins to flow from the discharge hose. A minimum of 1.9L (2 quarts) must be discharged during this 30 second run time.
4. If the fluid flow meets or exceeds 1.9L (2quarts) in 30 seconds the flow test is complete.
5. Reconnect all hoses to the transmission.
6. Check and adjust automatic transmission fluid level (refer to the workshop manual for proper procedure and capacity).
Here is how to check fluid. but above all be careful, as the engine is idling and exhaust is hot, and be sure to chock wheels in both directions on level surface:
FLUID LEVEL
When adding or changing fluid, use only DEXRON (R) -III.
CAUTION: DO NOT OVERFILL. Overfilling will cause foaming, loss of fluid, abnormal shifting and possible damage to the transmission.
Park the vehicle on level ground and apply the parking brake firmly.
Check fluid level with engine running at idle. NOTE: Be sure that transmission fluid temperature is below 30 °C (86 °F).
Move the selector lever through all gear ranges.
Move the selector lever to "Park".
Let engine idle for 3 minutes and open the overfill screw (1).
Add ( DEXRON (R) -III) transmission fluid until it flows out over the overfill screw opening.
Let engine idle until a fluid temperature between 32 °C (90 °F) and 57 °C (135 °F) is reached, then close the overfill screw (1). Torque: 38 Nm (28 ft. lbs.) NOTE: Check transmission fluid temperature with scan tool. Minimum fluid level 57 °C (135 °F) Maximum fluid level 32 °C (90 °F) I will try to find the link showing the photo of trans openings if you need them. The same trans is used from at least 1999 on Truprs, so any view will do.
CAUTION: Do not open overfill screw with engine stopped.
CAUTION: DO NOT CHECK FLUID LEVEL UNDER THESE CONDITIONS:
Immediately after driving at sustained highway speeds.
In heavy city traffic during hot weather.
If vehicle is towing a trailer.
If the vehicle has been operated under these conditions, shut the engine off and allow the vehicle to "cool" for thirty (30) minutes. After the cool down period, restart the vehicle and continue from step 2 above.
That being said I would not do a transmission flush and just let it be. Mine does not seem to be getting worse. The transmission is the Achilles heel of these vehicles. My father has a ford explorer that had a transmission doing much worse things than this at about 100,000 miles and he has put on another 150,000 miles since then with no repairs. If it is indeed the transmission it could last a very long time or go out soon. Pray to the car gods.
"You need to check the Transmission Mode switch assembly to see if water has gotten inside. Have you noticed if the gear selection display on your instrument panel is dim or flickering when you shift from park to drive? The mode selection switch is located on the drivers side of the transmission ,it has a heat shield attached to it to protect it from the exhaust pipe that runs right next to it.
I had the same problem as you are having now, I removed the switch assy from the transmission (held on by 3 small bolts) and one electrical connection. I dismantled the switch and found that all the grease inside had dried up and the switch contacts were shorting on each other. I cleaned out the switch and relubricated it with dielectric grease . Make sure to install the switch exactly as you found it as the position of the switch is adjustable and Very important as it tells the computer what gear you have selected. Hope this helps. "
Any suggestions - or a wiring diagram??
skiller
http://www.carspace.com/atfdmike/Albums/ISUZU%20TROOPER%20FORUM/2002truprlight1.- - JPEG/photo/v./photo.jpg
http://www.carspace.com/atfdmike/Albums/ISUZU%20TROOPER%20FORUM/2002truprlight2.- gif/photo/v./photo.jpg
2002 Isuzu Truck Trooper LTD 4WD V6-3.5L
Vehicle Level Accessories and Optional Equipment Radio, Stereo, and Compact Disc Technical Service Bulletins Audio System - CD Player Precautions to Prevent Jamming
Audio System - CD Player Precautions to Prevent Jamming
BULLETIN NUMBER:
IB02-13-S001
ISSUE DATE:
APRIL 2002
GROUP:
ACCESSORIES
CD PLAYER PRECAUTIONS
AFFECTED VEHICLES
All current SUV models with CD player/changer.
NOTE: This is not a warranty repair, any charges incurred due to CD Player misuse will be the customers responsibility.
SERVICE INFORMATION
Some vehicles may experience a situation where the CD player may become inoperative due to jammed CD's or incompatible CD media in the player. If this situation occurs the vehicle operator should be advised of the following conditions that may be responsible for this condition:
1. Some CD-R's will not play in the CD player due to the thickness or quality of the CD, as well as variables in the "burning" process itself. In some cases the inside edges of the center opening may be rough or have jagged edges causing the CD to jam.
NOTE: Current deck is not compatible with CD-RW and it will not play at all.
2. Labels that are affixed to the CD may peel (especially in hot weather) causing the CD to jam in the player (see figure 1).
3. CD's should not be used that have had more than one label affixed to the CD, this can cause the CD to jam in the player.
4. In vehicles with CD magazine, caution should be taken to insure only one CD is inserted into each disc tray (see figure 2). The correct loading procedures can be found in the Owner's Manual. Failure to follow procedures, the CD player will become inoperative resulting in damage to the player/magazine.
5. In vehicles with the in-dash CD changer caution must be taken to load CD's following the procedures in the Owner's Manual or the CD operations manual provided with the vehicle. Caution should be taken to load CD's only when the CD load Indicator Light is flashing. Not waiting for the indicator light to flash can cause the CD's to jam and may load two CD's in the same slot causing the player to become inoperative requiring service at the dealership.
NOTE: - Fujitsu 10 (Rodeo - UE) CD player units show "WAIT" if it is not ready for loading
- Nakamichi and Fujitsu 10 (Trooper - UX) CD player units have an amber light that flashes if it is not ready to load.
- Clarion (Axiom - UP) CD player units display "Disc Check" if it is not ready to load.
6. MINI-CD's or odd shaped CD's are not compatible with the CD changer and may cause damage to the player if used, or the CD.
7. Warped CD's should not be loaded into the play as they will cause the (D to jam and may not eject the CD. (When CD's are not in use, eject the discs and place them in their cases. Store them in a cool, dry place, away from direct sunlight.)
8. In order to maintain proper CD operation and sound quality the CD should be cleaned if they get fingerprints, oil or dust on the surfaces. They should be cleaned with a soft clean cloth from center to edge, always in a straight line.
9. The use of scratched or dirty CD's in the player may cause the CD to skip or cause a popping/clicking noise to be heard while they are playing.
If it is determined that a CD player needs repair refer, to Section 7 of the Service Policy and Procedures Manual for Exchange Program procedures and details.
You could post the code the check lite is warning about, as that would be much more specific than what can be supposed here. There is really little to test on the canister except to check it and hoses for leaks and cracks. The purge valve which is operated by the ecm computer also must work correctly, and a vacuum guage would be a good tool to check to see if it is functioning properly. The Isuzu manual gives a detailed check list of how to check the purge valve circuit, but you will need a vacuum guage, vacuum source, voltage/ohm meter and a fair head about how to troubleshoot an automotive problem. If you decide to try it yourself, post again and I will try to get you more information.
As for your mileage, it definitely sounds like there is a problem, but aside from a vacuum leak or need for a tune up I would be guessing as to why it is so poor.
Following is what book says:
Non-Electrical Components
Purge/Vacuum Hoses. Made of rubber compounds, these hoses route the gasoline fumes from their sources to the canister and from the canister to the intake air flow.
EVAP Canister. Mounted on a bracket ahead of the fuel tank, the canister stores fuel vapors until the PCM determines that engine conditions are right for them to be remove and burned.
2002 Isuzu Truck Trooper LTD 4WD V6-3.5L
Vehicle Level Powertrain Management Emission Control Systems Evaporative Emission Control Canister Testing and Inspection
Testing and Inspection
Evaporative Emission Control Canister
Inspect the hoses for cracks and leaks.
Inspect the canister for a damaged case.
Fuel Tank. The tank has a built-in air space designed for the collection of gasoline fumes.
Vacuum Source. The vacuum source is split between two ports, one on either side of the throttle body.
Fuel Cap. The fuel cap is designed to be an integral part of the EVAP system.
Here is link to show evaporative emission can under truck in front of (I think) the fuel tank.
http://www.carspace.com/atfdmike/Albums/ISUZU%20TROOPER%20FORUM/2002evapcan1.gif- /photo/v./photo.jpg
On the dashboard the rear wheel display lights blink and after a few moments, the check light blinks. I have had the tranny and transfer case serviced with no obvious problems.
I am new to this forum so any direction/help would be most appreciated.
Thanks.
Until I fixed it, I couldn't even get 4wd to engage. It is located on the front axle under the small skid plate. I was able to engage 4wd by swapping the vacuum lines. Then I ordered the part from St. Charles Isuzu and fixed it fairly easily.
Try web searches for Trooper TOD problems, etc. I ended up finding a web article on the actuator...it was well hidden, but it ended up giving me soup to nuts instructions on how to fix it.
Has anyone put a replacement engine in? Mech said between 3K & 4K - Value of this vehicle in 'good', private party cond is about 5,200.
Should I move on? Is it worth anything to anybody??
Anyone? Help?!?!?
Onroad, I have had 4wd issues, one issue was that the 4wd actuator stopped working and I had to replace it. It essentially locks the front hubs from what I can tell and I could not get 4wd to activate once it failed.
this is what my trooper looks like today but 2 marro im putting on 3 1/2 inch 6 lug to 6lug adapters. i made the skid plate out of a stop sign i had in my back yard, i cut it, bent it, sprayed it and installed it my self in about 2 hours =] haveing the right tools really helps, i should buy my own though lol =] what do u guys think?
I hope this info helps you.
1989 Isuzu Truck Trooper II V6-2827cc 2.8L
Vehicle Level Powertrain Management Computers and Control Systems Testing and Inspection Displaying & Reading Trouble Codes
Displaying & Reading Trouble Codes
If a problem develops in a monitored system with the engine running, the "Check Engine" light will come "ON" and a trouble code will be stored in ECM memory. As long as a problem is present, the light will remain "ON" while the engine is running. If the problem is intermittent, the light will go out but a trouble code will be stored in ECM memory. As a bulb check, the "Check Engine" light will come "ON" with the ignition switched "ON" and the engine not running. If no codes are present, the light will go out upon starting the engine. If the light remains "ON," the system has detected a fault.
If the diagnostic terminal is grounded with the engine running, the system enters Field Service mode and the "Check Engine" light will indicate whether it is in "Open Loop" or "Closed Loop." In "Open Loop," the light flashes two and one half times per second. In "Closed Loop," the light flashes once per second. If the system is running lean while in "Closed Loop," the light will stay "OFF" most of the time. Conversely, it will stay "ON" most of the time if the system is running rich. While in Field Service mode, the ECM will not store new trouble codes.
Refer to DIAGNOSTIC CIRCUIT CHECK for information on checking the function of the on-board diagnostic system. Note that many electronic engine control tests require the use of a "Scan" tool.
"SCAN" DATA
"Scan" Data
NOTE: Ensure that any "Scan" tool used is compatible with the vehicle system. Use of an incompatible tool could result in misdiagnosis and unnecessary parts replacement.
"Scan" data listed in the table may be used for comparison after completing the Diagnostic Circuit Check and finding the on-board diagnostics functioning properly with no trouble codes displayed. The "Typical Data Values" are an average recorded from normally operating vehicles and are intended to represent what the system would typically display. Only the parameters on this table are used for diagnosis. If a "Scan" tool reads other parameters, the values are not recommended by Isuzu for diagnostic use.
ACCESSING TROUBLE CODES
ALDL/DLC Connector
The "Check Engine" light displays trouble codes that are stored in ECM memory. To activate the Diagnostic mode, a special connector located in the center console is utilized. When the ALDL (assembly line diagnostic link) connector is jumpered between terminals "A" and "B" with the ignition "ON" and the engine not running, the light will flash any stored codes.
The first code to display should be code 12. This indicates that the self-diagnostics are functioning and is not a trouble code. The code 12 display is a flash followed by a short pause, then two flashes followed by a longer pause. If other codes are present, they will display in the same manner after code 12 has flashed three times. For example, the code 23 display is two flashes followed by a short pause, then three flashes followed by a longer pause. Each stored code is displayed three times, starting with the lowest in numerical order. Code 12 will repeat when all codes have shown. If no codes are stored, code 12 will display repeatedly until Diagnostic mode is exited by removal of the ALDL jumper wire. Remove the jumper wire before attempting to start the engine.
To allow checking circuits which may be difficult to energize without driving the vehicle and being under particular operating conditions, all ECM controlled relays and solenoids (except fuel pump relay) are energized in Diagnostic mode.
"Scan" tools also utilize the ALDL connector to access system diagnostic information. The use of a "Scan" tool is required to perform many of the tests under TROUBLE CODE COMPONENTS.
INTERMITTENT "CHECK ENGINE" LIGHT
"Intermittent" means that the "Check Engine" light may come on at times but does not stay on. Since codes may or may not be stored, the use of diagnostic charts could result in replacement of good parts.
Most intermittent problems are caused by faulty electrical wiring or connections. Carefully check these potential causes:
Poor mating of connector halves or terminals not fully seated in connector body.
Deformed or damaged terminals. All connector terminals in problem circuit should be carefully reformed to increase contact tension.
Poor terminal-to-wire connection. This requires removing terminal from connector body to properly check.
Poor ground connections.
If a visual check does not find the source of the problem, the vehicle may be driven with a voltmeter connected to a suspect circuit. An abnormal voltage reading when the problem occurs indicates the problem may be in that circuit. If wiring and connectors check okay and a code was stored for a circuit having a sensor (except codes 44 and 45), substitute a known good sensor and recheck.
Loss of ECM trouble code memory. To check, disconnect throttle position sensor and idle engine until "Check Engine" light comes "ON." Code 22 should be stored in memory for at least 10 seconds after ignition is turned "OFF." If not, the ECM is faulty.
An intermittent "Check Engine" light with no stored code may be caused by:
Arcing at ignition coil, plug wires or spark plugs.
EST wires should be routed away from spark plug wires, ignition system components and alternator.
Poor power supply circuit connections.
"Check Engine" light wire to ECM shorted to ground (circuit BLU/PNK 03).
Diagnostic test lead to ECM shorted to ground (circuit 451).
Poor ECM ground connections.
Electrical system interference caused by a defective relay, ECM driven solenoid or switch. These problems cause an electrical surge and normally occur when the faulty component is operated.
Improper installation of accessories such as lights, sound systems, alarms, etc.
ECM "QUAD-DRIVER" CHECK
A shorted solenoid, relay coil or harness will not damage the ECM, but will cause the circuit and controlled component to be inoperative. When the circuit fault is not present or has been repaired, the "quad-driver" will again operate in a normal manner due to its fault protected design. If a fault has been repaired in a "quad-driver" controlled circuit, the original ECM should be reinstalled and the circuit checked for proper operation. ECM replacement will not be necessary if the repaired circuit or component now operates correctly.
http://www.jcwhitney.com/autoparts/Product/tf-VehicleBrowse/s-10101/Pr-p_Product- .CATENTRY_ID:2005918/p-2005918/N-111+1998+200728778+600010344/c-10101
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http://www.thomasnet.com/products/polyurethane-bushings-9252008-1.html
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Give one of these sites or liked to sites a call, ask the people who live bushings everyday. There are several options to consider: Just poly, graphite impregnated poly, hardness, grease fittings in case they start to squeak etc...
Wish I researched more on this forum before I installed the Bilsteins. Looks like I'm gonna get the KYB Monomax instead. I do some light off roading, but thats about it.
THe auto lock hubs only unlock when the trupr is put in to 2 WD AND then it must be backed up at least 8 or 10 feet in order for the hubs to unlock. Some people have to back up even further, depending on the condition of the hubs. You could be hearing the front differential "complaining" about not being able to idle due to the hubs being engaged. If you already know this, and are sure they are unlocked, then it is not uncommon for there to be a bit of gear whine at higher speeds, but I have not heard anyone mention lately that they had anything but transmission problems when talking about "winding down and switching gears". If you can have the ECM checked for any hidden codes, you may find some stored but not illuminating the check engine or malfunction indicator lights. Try a search in this forum for similar problems, you could get some more insight. There are also posts that suggest how to check the computer yourself if you don't live near an Autozone or parts place that will do it for free. Good luck. One owners opinion.
FYI- I found sway bar bushing from jegs.com that had zerk fittings on them and are made by Energy Suspension. Much easier to keep lubed than the JC Whitney ones.
thanks
Thanx
Hope this info helps.
Maintenance Items 82,500 90,000 97,500 105,000 112,500
Air Filter Element Replace
Battery Check Check Check Check Check
Body and Frame Lubricate Lubricate Lubricate Lubricate Lubricate
Brake Fluid Check Check Check Check Check
Brake Hose/Line Inspect Inspect Inspect Inspect Inspect
Brake Pedal Assy Adjust Adjust
Clutch Fluid
Clutch Hydraulic System Check
Clutch Linkage Lubricate Lubricate
Clutch Pedal Assembly Check Check
Coolant Check Replace Check Check Check
Cooling System Inspect Inspect
Cruise Control Vacuum Hose Check Check
Disc Brake System Check Check
Drive Belt Inspect/Adjust
Drive/Propeller Shaft Lubricate Lubricate Lubricate
Engine Oil Replace Replace Replace Replace Replace
Exhaust System Check Check Check Check Check
Fluid - A/T Check Check Check Check Check
Fluid - Differential Replace
Fluid - M/T Replace
Fluid - Transfer Case Replace
Fluids Check Check Check Check Check
Fuel Supply Line
Locks Lubricate Lubricate
Neutral Safety Switch Check Check Check Check Check
Oil Filter, Engine Replace Replace Replace Replace Replace
Parking Brake System Check Check
Power Steering Fluid Check Replace Check Check Check
Radiator Clean
Spark Plug
Steering Check Check Check Check Check
Steering and Suspension Inspect Inspect Inspect Inspect Inspect
Throttle Cable/Linkage Lubricate Lubricate Lubricate Lubricate Lubricate
Timing Belt
Tires Rotate Rotate Rotate Rotate Rotate
Transfer Case Check
Wheel Bearing Clean/Repack
just check it every 500 and ull be fine
but always have at least a quart on u if u drive alot
and u do!
thanks
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Timing belt changes are at different mileages based on Trooper models. Mine is a 2001 and timing belt change is at 100K (coming up real soon for me), and my engine is a non-interference design, so if the timing belt fails, the engine will not be damaged.
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My 2001 uses a little oil, but small enough amount that if I change my oil every 3000 miles I don't have to worry about adding any. If you hear a slight lifter ticking at startup, that is a clue to check the oil level. My 1995 Trooper never consumed oil at all in the 140K miles I owned it, at least not enough to tell by the dipstick measurement.
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Isuzu engines do last a very long time, just like any well made equipment you must keep up the maintenance to get it to last. I have driven over 400K miles in three Isuzu Troopers and I am very pleased with their reliability.
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All that said, do I recommend everyone drive an Isuzu? No, I don't because there are few dealers around and fewer mechanics that like to specialize in Isuzu. I will stay with my Trooper as long as I can keep it running like new. I am also hoping that Isuzu begins selling diesel cars and SUVs and pickup trucks in the USA because I think there is a big untapped market in the USA for fuel efficient diesels and Isusu is one of the best diesel engine makers when it comes to fuel efficiency.