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Excessive temperature destroying the ATF is the number #1 cause of failure. #2 is restricted heat exchanger flow [clogged] starving the rear planetary gear of lubrication.
150,000 miles is not unusal with proper maintenance......some make 200,000 miles. A few fail at 50k.......obviously city shift is worse than steady interstate miles, as a hot climate operation vs cold.
I recently brought my car in for service and the service tech mentioned he noticed a humming noise coming from the final drive while the car was on the stand. I personally never noticed the sound while driving. The car has an automatic transmission. They quoted me 5 hours of labor to run a diagnostic. However at$72 an hour...I'm debating whether its worth it or not as if it's not a warranty covered item, I get tagged with the diag fee.
Any idea what could be causing the noise?
Thanks!
Is change alone sufficient to maintain the Nissan transmission? Thanks again.
Yes...they quoted me $350 for a tear down diagnostic. Since my extended warranty expires shortly, I'm debating whether its worth having it done.
The only downside is...if they don't find anything wrong, I get tagged with the diag charge.
But considering the transmission already has 144k miles of usage. Getting it torn down and looked at might be worth the chance. Especially if they find anything which needs replacing. The service department could then submit a claim to the warranty company for the entire diag and repair charge.
It's a decision I'll have to make soon. Any recommendations?
thanks!
Of course, you know the severity of this noise more than I could tell, so I don't want to discourage you--I'm just doing my thing, which is thinking of the worst possible outcome--LOL!
I'm not so sure the visually detecting the cause of a driveline noise is going to be that easy.
Did the mechanics give you any idea of what they hope to find? What if they find wear or looseness or play but it's still withink spec?
My noisy differential could run for another 100K.
The good news was all of it was covered under my extended warranty policy!
I still have a few months left until this warranty finally expires (good grief for the company I'm sure), but my plan now is to take it to a shop which specializes in transmissions and letting them take a look at it. Dealer service seems more like part swapping than anything else.
I'm starting to feel it might be worth driving this car into the ground now...but i'm still unsure about that.
On the other hand, could I possibly attract a buyer into a high mileage car in tip top shape and still get some decent $$ these days?
Meanwhile, found this on another website - any comments experts?
the reason for the honda failures is simple, the auto tranny is simply a manual tranny with a set of clutch packs and servos added, each gear shift once off the showroom floor, clashes gears and knocks off metal, which circulates and imbeds in the clutch pack seals, inviting failure.
Depends some on the brand, model, and year of the vehicle in question.
Oh, BTW it has 115,000miles on it.
Thanks in advance!
Does this car have the TC shudder at lockup? What tranny fluid are you using?
Please correct me if I am wrong, but I think that Ford fixed the TC lockup shudder for the 1996 transmitions. I have not had that problem, although while I drive it in town, I have to turn off the overdrive because it kicks in at such low speeds (30-35), and is very annoying. My son does this as well, but it doesn't bother him much because he is used to it.
I bring my cars to a friend who does the work for me. I think he uses (Mercron(sp?)) III, is that right?
Thanks again! Any other input is welcomed :-)
Generically, a vehicle speed sensor is a permanent magnet AC pulse generator mounted in the output section of the transmission, transaxle, or transfer case if it's 4WD/AWD. It uses a rotating toothed reluctor wheel or tone ring to interrupt the magnetic lines of flux around a permanent magnet with copper windings around it, inducing alternating current into the windings. The frequency of the AC signal is directly proportional to reluctor RPM. Or something like that. What's your make, model, year, transmission, and problem?
The manual says, use only Toyota T-IV ATF,
Does any one know what kind of ATF is T-IV oil?
Is there any ATF equal to the T-IV oil ?
Need your help.
Thanks,
Rob
Also: Be very careful to not use the wrong kind of fluid in your Chrysler Corporation transmission! I have a 1996 Concorde that uses ATF+3. Other products can cause big trouble. You might want to check to see that the "stop leak" product is compatible with your transmission.
The best thing is that you will not need to purchase a gallon jug (Toyota dealer at $ 34) Walmart under $ 4 quart
http://www.pennzoil.com/penn/products/car_truck/gearoil.html
Look under: Pennzoil® Multi-Vehicle ATF
99-06-04-045
99-07-30-007
00-07-30-002B
Tech - Low Power/Stumble When Accelerating in Turns or Straight Line #99-06-04-045 - (10/04/1999)
Low Power/Stumble When Accelerating In Turns Or Straight Line (Reprogram PCM)
1998-99 Buick Park Avenue, LeSabre
1998-99 Oldsmobile Eighty-Eight
1998-99 Pontiac Bonneville
Condition
Some customers may comment on low power or stumble when accelerating in turns or straight line. Other concerns may include a 2-1 transmission slip, an SES light for P0405/P1374 and an L1 coast-up IAC interaction.
Correction
The following service calibrations have been released to update the vehicles to correct the conditions.
Parts Information
Part Number, Description
9379884 Broadcast Code: CYDJ - 99 C - Federal - P225 tires - 3.05 axle
9379924 Broadcast Code: CYDN - 99 H - Federal - P215 tires - 3.05 axle
9379894 Broadcast Code: CYDK - 99 C - Export - P225 tires - 3.05 axle
9379954 Broadcast Code: CYFH - 99 H - Federal - P225 tires - 2.86 axle
9379914 Broadcast Code: CYDM - 99 H - Export - P215 tires - 2.86 axle
9379934 Broadcast Code: CYDP - 99 H - Export - P215 tires - 3.05 axle
9379904 Broadcast Code: CYDL - 99 H - Federal - P215 tires - 2.86 axle
9379774 Broadcast Code: CYCU - 98 C - Federal - P225 tires - 3.05 axle
9379784 Broadcast Code: CYCW - 98 C - California - P225 tires - 3.05 axle
9379794 Broadcast Code: CYCX - 98 C - Export - P225 tires - 3.05 axle
9379804 Broadcast Code: CYCY - 98 H - Federal - P225 tires - 2.86 axle
9379814 Broadcast Code: CYCZ - 98 H - California - P225 tires - 2.86 axle
9379824 Broadcast Code: CYDA - 98 H - Federal - P215 tires - 2.86 axle
9379834 Broadcast Code: CYDB - 98 H - California - P215 - 2.86 axle
9379844 Broadcast Code: CYDC - 98 H - Export - P215 tires - 2.86 axle
9379854 Broadcast Code: CYDD - 98 H - Federal - P215 tires - 3.05 axle
9379864 Broadcast Code: CYDF - 98 H - California - P215 tires - 3.05 axle
9379874 Broadcast Code: CYDH - 98 H - Export - P215 tires - 3.05 axle
The calibrations listed are electronic calibrations and are NOT available from GMSPO. Calibrations will be available from
Techline starting June 1999, on the TIS 2000 Disc 12 CD ROM.
Support Bearing) #00-07-30-007A - (01/30/2002)
Whine Noise In Park Or Neutral, Service Engine Soon or Service Vehicle Soon Lamp Illuminates (Replace Drive Sprocket
Support Bearing)
1999-2000 Buick LeSabre, Park Avenue/Ultra, Regal, Riviera
1999-2000 Chevrolet Lumina, Monte Carlo, Venture
2000 Chevrolet Impala
1999 Oldsmobile Eighty Eight
1999-2000 Oldsmobile Intrigue, Silhouette
1999-2000 Pontiac Bonneville, Grand Prix, Montana
with 3.4L, 3.5L or 3.8L Engine (VINs E, H, K, 1 -- RPOs LA1, LX5, L36, L67)
and Hydra-Matic 4T65-E Transaxle/Transmission (RPOs MN3, MN7, M15)
This bulletin is being revised to add the Chevrolet Impala to the models affected. Please discard Corporate Bulletin Number 00-07-30-007 (Section 07 - Transmission/Transaxle).
Condition
Some owners of the above models equipped with a Hydra-Matic 4T65-E transaxle with a Julian Date prior to 0045 may comment on a whine noise in PARK and/or NEUTRAL or a Service Engine Soon or Service Vehicle Soon lamp that is illuminated. Upon investigation, a DTC P0741 or P0742 may be found.
Cause
The above condition may be due to drive sprocket support bearing fluting and/or bearing failure.
Correction
Replace the drive sprocket support bearing. Inspect the channel plate and drive sprocket for any abnormal wear, Turbine shaft for cut seals and/or nicks, and chain for excessive play due to failed bearings.
Important
When installing the new bearing, the part number MUST be visible (facing upward). Before installing the drive sprocket, lubricate the bearing assembly with J 36850 assembly lubricant.
Refer to the 4T65-E Unit Repair Section for the installation procedure.
Service Parts Information
Part Number, Description
24214158, Drive Sprocket Support Bearing
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation. Labor Time
K7522, Use Published Labor Operation Time
Slips, Harsh Upshift or Garage Shifts, Launch Shudders, Flares, Erratic Shifts and Intermittent Concerns, DTC P1811 or P0748 Set (Replace Pressure Control Solenoid Valve Assembly)
1997-1999 Buick Riviera
1997-2002 Buick Park Avenue
1998-2002 Buick LeSabre
1999-2002 Buick Regal
2000-2002 Buick Century
2002 Buick Rendezvous
1997-2001 Chevrolet Lumina
1997-2002 Chevrolet Monte Carlo
1999-2002 Chevrolet Venture
2000-2002 Chevrolet Impala
1997- 1999 Oldsmobile Eighty Eight
1997-2002 Oldsmobile Silhouette
1998-2002 Oldsmobile Intrigue
2001-2002 Oldsmobile Aurora (3.5L)
1997-2002 Pontiac Bonneville, Grand Prix
1999-2002 Pontiac Transport/Montana
2001-2002 Pontiac Aztek
with Hydra-Matic 4T65-E (RPOs MN3, MN7, M15, M76)
This bulletin is being revised to add additional models and model years. Please discard Corporate Bulletin Number 00-07-30-002A (Section --Automatic Transmission).
Condition
Some owners of the above vehicles with a Hydra-Matic 4T65-E transaxle may comment on harsh upshifts or harsh garage shifts, soft shifts, shudders on hard acceleration, or shifts erratic. These conditions may appear intermittently or set a DTC P1811 or P0748. During diagnosis, a low or high line pressure (actual versus desired) may be observed.
Cause
The above condition may be due to any one of the following which may affect line pressure output:
Sediment inside the pressure control (PC) solenoid valve, causing the PC solenoid valve to mechanically bind.
Sediment in the valve body, causing the torque signal regulator valve to stick.
Incorrect transaxle oil level.
Correction
Important
Any of the above conditions may be intermittent, therefore, this test should be performed at least three times.
Refer to the Line Pressure Check Procedure in SI, along with the Line Pressure Specification Table below, to determine if actual versus desired pressures are within the values specified. The Scan Tool is only able to control the PC solenoid valve in PARK and NEUTRAL with the vehicle stopped. This protects the clutches from extremely high or low pressures in DRIVE or
REVERSE ranges.
Refer to the Line Pressure Specification Table below. The pressures in the table assume a temperature of 70°C. The pressure will vary with a change in temperature.
Line Pressure Specification Table
Pressure Control Solenoid Valve Current,
Approximate Line Pressure*
Metric English
0 amp, 1675-2137 kPa, 243-310 psi
0.1 amp, 1662-2124 kPa, 241-308 psi
0.2 amp, 1613-2103 kPa, 234-305 psi
0.3 amp, 1551-2068 kPa, 225-300 psi
0.4 amp, 1448-1986 kPa, 210-288 psi
0.5 amp, 1310-1903 kPa, 190-276 psi
0.6 amp, 1172-1751 kPa, 170-254 psi
0.7 amp, 1000-1531 kPa, 145-222 psi
0.8 amp, 793-1227 kPa, 115-178 psi
0.9 amp, 565-896 kPa, 82-130 psi
1 amp, 469-641 kPa, 68-93 psi
1.1 amp, 448-552 kPa, 65-80 psi
*Approximate Line Pressure is measured at an engine speed of 1400 RPM.
If the actual versus desired pressures are not within the values specified, clean the valve body and replace the PC solenoid valve, if necessary.
Check the PC solenoid valve actual versus desired pressures to verify the new PC solenoid valve is responding correctly.
Refer to the Automatic Transaxle Section of the Service Manual for the proper repair procedure.
Line Pressure Check Procedure
Tools Required
J 21867 Universal Pressure Gauge Set
Important
Before performing a line pressure check, verify that the pressure control (PC) solenoid valve is receiving the correct electrical signal from the PCM.
Install a Scan Tool.
Caution
Keep the brakes applied at all times in order to prevent unexpected vehicle motion. Personal injury may result if the vehicle moves unexpectedly.
Start the engine and set the parking brake.
Check for a stored Diagnostic Trouble Code (DTC).
Repair the vehicle, if necessary.
Check the fluid level. Refer to the Transmission Fluid Checking Procedure.
Check the manual linkage for proper adjustment.
Turn the engine OFF. Remove the oil pressure test hole plug and install the J 21867.
Put the gear selector in PARK range and set the parking brake.
Start the engine and allow the engine to warm up at idle.
Notice
Total test running time should not be longer than two minutes, or else transmission damage could occur.
Access the PC solenoid valve control test on the Scan Tool.
Increase the PC solenoid actual current from 0.0 to 1.0 amps in 0.1 amp increments. Allow the pressure to stabilize for five
seconds after each pressure change. Read the corresponding line pressure on the J 21867.
Refer to the Line Pressure specification table. Compare the data to the table.
If pressure readings differ greatly from the table, refer to Incorrect Line Pressure.
Remove the J 21867.
Apply sealant, P/N 12345382 (in Canada, P/N 10953489), to the oil pressure test hole plug.
Notice
Refer to Fastener Notice in Cautions and Notices.
Install the oil pressure test hole plug. Tighten
Tighten the oil pressure test hole plug to 12 N·m (106 lb in).
Parts Information
Part Number, Description
10478146, Pressure Control Solenoid - Valve Asm.
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation, Description, Labor Time
K6353, Pressure Control Solenoid Replacement, Use published labor operation time
K6560, Valve Body Replacement, Use published labor operation time
in Product Category select gear oil/transmission
in next page select Multi-Vehicle Automatic Transmission Fluid
find Toyota under application where recommended use is listed
(And please note how I said it, the flaw is regarding how the vendor is providing the information, not with what you are saying. I believe you MIGHT be making a bad assumption based on incomplete information.)
Just an example of how I know that type of information can be wrong, or at the very least, misleading. They specify the standard ATF and I believe the Multivehicle ATF fluid is fine for Chrysler vehicles. However, most of us know the 4 speed Automatic Transaxle used in (now all I believe) FWD Dodge and Chrysler cars takes ATF+3 and will be damanged by regular ATF. So you can't just say that because it says Chrysler in the "spec" that means every Chrysler made vehicle.
So I suspect the Multivehicle ATF was good for earlier Toyotas and Toyota now has a new spec for their fluid.
Of course I could be wrong, since this is speculation on my part, but it's what I believe until proven otherwise.
But my point is solid, we need to see the Toyota spec and specifically what fluids meet that spec, and not just a vague applications chart, short on detail.
TB
Regards,
Dusty
What is ATF +4 ?
I have 2003 Toyota Corolla LE, 4 speed Automatic Transmission, in the manual, says, I must use Toyota ATF Type T-IV.
Is ATF +4 equal to Toyota ATF type T-IV?
Your response shall be appreciated.
Thanks
jsleesi
my sister, and all I want to do is check the
transmission fluid. Problem is, I can't find
the transmission dipstick. It IS an automatic.
I've had several people look, and no one can seem
to find it. Can someone please tell me where it is?
Please e-mail me at schaybree@aol.com.
I would sure appreciate any help, thanks.
There was no sign of trouble before the problem started. Has anyone else had this problem? Does anyone know if it is bad enough for Ford to have issued a recall?