1994 Honda Accord Transmission will not shift

Tiny
CDS86VETTE
  • MEMBER
  • 1994 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 246,547 MILES
The transmission will not shift. You can manually shift into 1st grear then shift into drive. Replaced Transmission, same problem. Replaced all 4 Shift Solenoids, same problem, Replaced Transmission computer ( three different times), same problem, Replaced both sensors, same problem. Now here is a different twist. You can take the battery loose, wait about two minutes, reconect the cable. Now the transmission will operate like it should. It may take ten miles to fault out or it may take a hundred miles before it faults out. When the transmission faults the D4 lite will stay on until you disconnect the battery. Then can drive for a while OK.

Any help?
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Monday, April 26th, 2010 AT 8:55 PM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Hi CDs86Vette,

Thank you for the donation.

When the D4 light comes on, does it go off if you restart the engine?

Did you try to retrieve for trouble codes?

Since the TCM was replaced 3 times, the possibility of it being the cause is rather low, unless there are changes in the symptoms.

I would lean more towards a bad connection somewhere.

Test the Throttle Position Sensor to see if it is working within specs.
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Tuesday, April 27th, 2010 AT 7:27 AM
Tiny
CDS86VETTE
  • MEMBER
The D4 light will stay on until the computer is reset.

I have been unable to get any codes when the D4 light is on. I may be doing it wrong.

I have checked all the connections that I can find and they appear to be good.

Could the ECM be causing this problem?

With all that I have replaced or missed with the symptoms have not changed.
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Tuesday, April 27th, 2010 AT 8:51 AM
Tiny
KHLOW2008
  • EXPERT
The D4 light staying ON till after resetting indicates a faulty TCM. If it is a wiring fault or any other problem, the D4 light would not come on after restarting. I might come on after some driving.

Did you bridge the SCS connector to retrieve the trouble code?
Were the replaced TCM of the correct P/N?
Were they rebuilt or used?
The ECM is linked to the TCM and could possibly be causing it if there is a fault with the power supply.

Check the ECM harness connectors for possible contaminations or loose contact.
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Tuesday, April 27th, 2010 AT 10:43 AM

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