Doesn't always want to shift up from first...can depress the accelerator and it seems that it has no power and won't upshift...can floor it and it raps and goes but then reverts back to the "no power" syndrome and sometimes the OD dash light flashes on and off even tho' it is "on" while this is going on. Can let off the accelerator sometimes and step on it again (without flooring it) and it seems to straighten out. Sometimes leaving it in second bypasses the prob...kinda sort a. Hmmm simple fix or??? Elec shift control or OD going out or????? Can this be diagnosed (plugged in) with ****** in the car?
The flashing OD light indicates a fault code is stored in the TCM module's memory, have the fault code read. Most transmission shops will do the diagnosis for little or no cost, call around.
Check your pcv valve hose,could be leaking.
SOURCE: 1998 Ford Explorer
there is an sensor on the speed odmeter cable on the side of transmission. it will kill thr overdrive and cruise control but not the speedometer. about $50.fixed 2 explorers that way
SOURCE: Transmission problem
If the S light is blinking, this indicates that there is an electrical problem somewhere it the TCM circuit. I have included a link that takes you to an excellent page which shows you how to read the codes and what they mean.
http://home.earthlink.net/~michaelpkeefe/HowTo_Codes.htm
Also, The top solenoids are for the lockup clutch and the bottom ones are the shift solenoids.
As for the Immobilizer causing problems, if it was incorrectly wired to the TCM, then it could possibly cause a problem.
SOURCE: Vibration through the car Transmission-motor Linkage?
Check to make sure both headlights are tight,,,when it rattles at idle go feel the headlight and hold it and see if the noise and vibration goes away,sometimes the headlight has too much clearance and causes a massive vibration,,if thats not it try...loosening all the motor mounts and rock the car back and forth and them retighten them,it reseetles the mounts and sometimes fixes the issue,,also check the lower engine and trans mounts for wear.
SOURCE: Transmission issue? Or worse?
Hello! Although the symptoms you've described could be a result of quite a few things, I have a few questions that might help determine your problem.
1) What year/make/model did the new transmission come from?
2) Is the SES (Service Engine Soon) light on? Is it blinking?
3) Was this transmission a rebuilt or used unit?
Some possibilites:
- you could have a faulty TPS - or Throttle Position Sensor.
- you could have a problem with the input shaft piston being worn. (Hence the used vs. refurb trans question). Once the inner sealing area wears it can prevent the inner lip seal for the piston from sealing properly. You may find that revving the engine up will finally get the car to move and it will BANG into gear. This is because the pump in the transmission is working harder and moving more fluid thus allowing the added fluid to overcome the leak which prevented the clutch from either initially applying or staying applied. Another area of concern that causes this is a boost valve in the valve body, not near as common but it can cause this problem on a lessor scale.
- Trouble Code P0742 TCC Stuck ON:
When this trouble code is set the pcm will command max TCC and lock adaptive shifting. This code can be broken down into three potential problem areas as found to be common in the field.
1. This problem can be a mechanical problem. Possible causes of this could be a bad or stuck TCC switch that signals the pcm of current TCC operation. Another cause though not common is a stuck TCC switch or apply valve. If it is physically stuck in the wrong position it can cause the TCC to be stuck on all the time and even kill the engine when the vehicle is put into gear.
2. This problem can be found to be an electrical problem. If the wire from the TCC pressure switch to the pcm is grounded anywhere in the path it can throw this code. This could be a wire shorted inside the trans on the internal wiring harness or the actual engine wiring harness. If the wire is grounded the pcm thinks that TCC is on when it shouldnt be and will throw the code.
3. This problem can be a hydraulic problem. This is the most common cause of this code that I have found and stems back to a clogged TCC solenoid, not because it failed. Excessive debris in the transmission or a failing torque converter lockup clutch can cause the solenoid to have debris stuck inside and this causes a restriction in fluid flow through the solenoid. If the solenoid can not bleed off the pressure the TCC can be stuck on. If the wrong TCC solenoid is installed during an overhaul this problem can also arise as a late 4L60E solenoid is identical but does not operate the same and acts like a clogged solenoid. As mentioned in problem #1 a stuck TCC apply valve is a physical problem but causes a hydraulic problem because the fluid pressure will not properly bleed off because the valve is stuck in the wrong position instead of being able to move freely in the bore of the valve body.
Above are the common causes of this code, there are other possibilities but those are what generally causes the fault. A thorough diagnosis is the only way to determine what is really at fault and a new TCC solenoid should never be assumed as the actual problem until verified.
HTH - and thanks for using FixYa!
-KCGTODAD
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SOURCE: my automatic transmission slips when shifting from
Either the fluid is low or you have a clogged trany filter or are starting to loose your transmition.If it is just low on fliud you will ruin your trany if you keep driving it with this condition.Check your fluid level with the engine running and if it is low fill it to the full line and test drive.
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