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When I know I will have to stop at an intersection, I will frequently shift my 5spd into neutral, and coast up to the stop. While the truck is coasting, my RPMs are around 1050-1100. As soon as the truck comes to a complete stop, the RPMs drop to 750-800. Why don't they drop to 750-800 as soon as I put it in Neutral?
Bookitty
Bookitty
Keep in mind that the ECU (EngineControlUnit) was originally programmed for an automatic tranny.... but when coupled to a manual tranny, the Idle will settle to about 800-900 RPM if one coasts with the clutch pushed long enough. Any roadspeed above 0.0MPH will engage this idle sequence.
It is generally believed that this was programmed this way mainly to reduce engine-braking when the throttle is released.
It also makes shifting the manual tranny easier for some folks that are not accustomed to double-clutching under some conditions.
Personally , I think it is a silly way to control the idle-speed. I much prefer an idle that is rock-steady at any roadspeed.... but with a V8, releasing the clutch would slide the rear wheels due to engine-compression. It is a way to make driving the manual tranny more idiot-proof ;-)
Emissions.
If the throttle were to return to the qualified curb idle speed at deceleration, excessive fuel is pulled through the idle circuit causing a rich mixture and realize a corresponding increase in exhaust emissions. This would be especially true for a manual transmission vehicle since there is no way for the computer to know that the transmission is in neutral.
Dusty
Bill
Thanks,
Eric
Get with Randys to establish the cost of the various options. http://www.ring-pinion.com/
Call some competent rear-end mechanics to determine the cost to install.
BTW... I still see your rig in the parkinglot at work in the mornings 8-)
BTW, with towing occasionally, running average 15.5 mpg, best 24, wife just returned from NM (800 miles)20+ every tank.
The popping noise on my rig was caused by the brake pads shifting in the caliper as well as the caliper mounting not staying tight against the wheel hub. it was never resolved when I traded the truck in.
I have used REDLINE lubes in all 4 gearcases of my Dak. The MPG improved by about 3 MPG too!
Another possibility is that a upper-balljoint may be getting sloppy.
As for a shop manual... I got the factory shop manual when I bought my 2000 Dak new. It is euphamistically known as "BOB" because it is a Big Orange Book. (Dodge uses a different color for each model year... 2000 is Orange)
I HIGHLY recommend you get a BOB. It has very good explanations of virtually all of the complex systems on the Dakota.
Somtimes there is a BOB for sale on eBay but in any case, a Dodge dealership will be able to order one for you.
The Dodge Manual is available from Dyment Distributors at 800-216-6856 (couldn't find their website). This is where the dealerships go to get the manual.
Ron
The 4.7L engine also has a brand new automatic transmission.
Also, 2 additional doors were available on the Dakota starting in 2000.
IFS= Indipendent Front Suspension.
Both of the following websites back up what I am saying.
http://keith.mcbride.org//gearoil.html
http://www.redlineoil.com/whyredline.htm
If you have the WRONG RedLine product, either exchange it for the proper stuff or use the REDLINE LSD additive.
QUESTION: why do you feel the need for a "140" lube in your rear diff? This may be wayyy to thick for proper lubrication.
The reason I'm using this weight is that is what is recommended by Dodge for towing purposes. It's buried in the Owner's Manual under the "Towing" section. Since I tow 3000 lbs for about 15% of my annual mileage I figured I would go with it while the vehicle is under warranty. For the weight that I am towing, the synthetic 75W-90 is probably OK, but I want to be covered if there are ever any problems.
The 8.25" capacity is 4.7 pts.(incl friction modifier)
The 9.25" capacity is 4.9 pts..(incl friction modifier)
The really good part is DamlierChrysler strongly recommends that the dealers to sell the plans at dealer cost. They say pricing the plan at dealer cost represents a "tremendous Consumer Value....
Essential Care promotes increased Service and Parts profits by bringing customers back to their dealership for all their automotive needs."
Eligible Vehicles
Plan can be offered or sold at anytime on all New and Used DamlierChrysler, G.M., Ford or Imported vehicles (excluding Viper, Prowler, Diesels and all other vehicles that require synthetic oil) regardless of age or mileage.
I suppose if you have an old Yugo that still runs it too would be eligible....... Rick
Now for the questions:
1. I'm considering synthetic for the trans change via a flush. What has anyone had good luck with in the auto trans, and has it made any difference in mileage or performance?
2. Ditto on the transfer case for synthetic.
3. Spark Plugs, any opinion on origial replacements vs the others.
4. If anyone has suggestions on the door air leak I'd appreciate your opinions. I'm thinking there must be a way to suck that door in tighter.
5. How many of you folks are in this for the long haul? 80-120K. I keep thinking things are going too well from a maintenace standpoint and am trying to decide how long to keep this truck.
Sorry for the long post but its been sparse here lately so most shouldn't mind the extra text.
Thanks for your answers, they are always great! Kevin
1+2) Red Line brand synthetic lubes (expect 1 to 3 better MPG)
3) Bosch+4 platinum
4) there are adjustments for 'closing tightness' (just loosen bolts and move the latch)
5) I expect at least 150K miles out of my Dak. Here in Vermont, it is the longevety of the BODY that is the key factor.. Dodges are perhaps the best trucks on the road from that perspective.
My son's '91 Dakota is still going at 270,000 miles. The 3.9 engine never consumes any oil at the 3500 mile oil change. It's got some lifter noise at initial start-up (especially in the cold weather), but it's been there since he's had it and never gotten any worse. There is some rot at the bottom left edge of the tailgate. The rest of the body is solid, despite a multitude of scrapes and dents taking the paint off.
I hunt with a guy whose '90 GMC had rotted doors, wheel lips and cab floor (the rear body mount literally gave away causing the cab to sink about three inches on the frame) at the end of 7 years. His '97 has an outer body rust hole at the bottom rear of the cab.
Around here Ford F150s do much better, but the Ranger series not so well. S10s turn to complete vapor in about 9 years (my son had two).
RAMs do quite well, especially the '94 body style. Dakotas are actually among the best for staying rust free and there are still a lot of the mid-to-late '80s version around. In fact, there's one in my neighborhood.
Bests,
Dusty
I tried removing the residue with Ditzler Acryli-Clean, but this stuff is stubborn. Anybody have any suggestions? What do some of you folks use?
Bests,
Dusty
I removed the lamp assemblies and realized that there is a molded-in opening to atmosphere at the bottom of the lamp assembly. Since it is easier to purge moisture out of something than it is to prevent it from getting in, this design is fairly intelligent in this respect.
The bulb sockets showed no signs of being wet and after close and careful inspection of the socket assemblies, I'm very sure that these provide a good hermetic seal to the lamp housing.
Since I've sprayed water up under the body on numerous occasions through the winter, I must conclude that the last time I did this I actually forced water into the small tube-like moisture purge extension outlets.
I might attach a small rubber hose to this outlet and let it hang downward, prevent water from getting into the lamp assembly.
By the way, removing the taillamp assemblies is a piece of cake on the Dakota. The next time I want to flush the box area of the truck, I think I'll just remove them and spray water into the openings.
Dusty
Anyone have any suggestions for me?
Thanks
2000 QC 2wd 4.7 5spd(man) 3.55LSD
Throttle Plates/Linkage Binding
Vacuum Leak
Throttle Body
Throttle Body Dirty
Hope this info is of some help.
Dick
Additioally, do not forget that some CEL alerts are NOT automaticlly reset by completing the denoted number of trips. These must be reset "manually".
If you have not cleaned your TB lately, now is a good time to do it. (and clean the IAC too!) At 59K mailes, I would expect that you have cleaned these items at least 4 times over that many miles.
In older Chrysler systems some codes would reset after 40 ignition starts. I'm not sure if any codes are reset that way on current Chrysler products, but some CTM codes might reset this way.
What Bpeebles means by "complete trips" is a complete open and closed loop cycle operation of the engine. This would include the following:
ignition switch energized mode (PCM wake Up signal)
engine start-up mode
engine warm-up mode
idle mode
cruise mode
acceration mode
deceleration mode
ignition switch off
Regards,
Dusty
It's very common for vehicle manufacturers to just spare the ball joint with the A-arm only.
As an aside, when rotating my tires a few weeks ago I noticed that the rubber grease retaining seals looked collapsed, as if there was very little lubricant in the joint. I'm tempted to drill and tap them and install a zerk fitting to allow me to lubricate them, for I'm suspicious that the factory didn't get enough grease into the joint. That will most certainly contribute to short ball joint life.
Best regards,
Dusty
Additionally, the 'rememberd' settings get stored in more permimant memory of the ECU as they are encountered repeatedly. It is a pretty complicated algorythim that does all of this stuff.
As for the "squeaking".... I am wondering if the pulleys got some surface-rust on them while sitting.
Did your brakes tend to be "grabby" for the first couple of stops too?
I installed the rear shocks by just sliding under the truck and doing it from there. (I have the 4X4 with 31" tires... it sits pretty high)
For the fronts, i had to use jackstands and pull each front wheel.... still pretty easy. The toughest part was compressing the front shocks and putting them in place before they "expanded" into position.
I used a torque-wrench on all fasteners, including the lugnuts. (VERY important on aluminum wheels to RE-torque after driving for a day or so!)
Dusty