'92 accord wagon starting problem

[squidlips]

My '92 Accord wagon has an odd problem, I was wondering if anyone has heard of this happening. First, it's an automatic. The lights on the dash for which gear it's in will sometimes light the "P" and the "D4" at the same time. When that happens the car will crank, but not start. It may do this for a week straight or just once. When only the "P" light is lit, it starts just like any "normal" car. My mechanic said it's just the light on the dash that is the problem, I think he's a putz.

Any ideas?

[mpumas]

A D4 flashing indicates a problem with the ATU which may be caused by something outside the ATUY. So you need to retrieve the code and go from there. See below for the procedures:

HONDA ATU SHIFT CODES 90-93
Honda and Acura transaxle trouble codes are communicated by either flashing an LED on the transaxle computer, or by flashing the 'S' or 'D4' shifter status light on the instrument panel after connecting a service connector. The 'Check Connector' is tucked away under the far right edge of the dash board, either below the bottom right edge of the glove box, or behind the top edge of the passengers carpet, on top of the computer.
Make sure that the 'S' or 'D4' shifter status light on the instrument panel lights up for at least two seconds, or blinks after the key is turned on. Turn the key off. Jump the two 'Service Check Connector' pins together and turn the key on. Watch the 'S' or 'D4' light for flashes. if no problem exists, the light won't flash. if a problem exists, the light will give you either short, or long and short flashes. Short flashes are a 'ones' digit of either a one or a two digit trouble code. Long flashes are the 'tens' digit of a two digit code.
Short flashes are about a half second long, and long flashes last about a second and a half. There is about a one second 'OFF' pause between each code. All codes will be shown in sequence, lowest number first, up to the highest number. The sequence will repeat as long as the key is on and the connector is jumped together.
Once you have the codes you'll have a pretty good idea where to start looking for a problem.
CODE LIST:
1. Lock-up solenoid 'A' circuit open or shorted.
2. Lock-up solenoid 'B' circuit open or shorted.
3. Throttle Position Sensor circuit open or shorted.
4. Vehicle Speed Sensor open or shorted - No signal from speedometer.
5. Shift Lever Position Switch circuit shorted.
6. Shift Lever Position Switch circuit open.
7. Shift Solenoid 'A' circuit open or shorted.
8. Shift Solenoid 'B' circuit open or shorted.
9. Counter shaft or transmission speed pulse generator open or shorted.
10. Coolant Temperature Sensor open or shorted.
11. Engine RPM (Ignition coil signal) open or shorted.
12. (No code 12 used)
13. Main shaft speed pulse generator open or shorted.
14. Linear (line pressure control) solenoid open or shorted.
15. Kick down switch circuit shorted.

[ProMan]

Originally Posted by squidlips

My '92 Accord wagon has an odd problem, I was wondering if anyone has heard of this happening. First, it's an automatic. The lights on the dash for which gear it's in will sometimes light the "P" and the "D4" at the same time. When that happens the car will crank, but not start. It may do this for a week straight or just once. When only the "P" light is lit, it starts just like any "normal" car. My mechanic said it's just the light on the dash that is the problem, I think he's a putz.

Any ideas?

Had the same problem years ago. It's very possible your main relay. The soldering joints are bad. Do a search and you will know how to fix it.

Let me know if you need further help.