I have a 1991 Honda accord. the check engine light comes on after I start driving the car. Here are the codes 6,7,17,43...12,47, & 8. there is also a speedometer sensor that is gone out and maybe the o2 sensor. can any one help with these codes?????? thank you... for any input...

 

I too have a '91 EX that did exactly what you said yours does!! But the funny thing is, it stopped doing that about 2 months ago. I bought the car about a year ago. It was fine for a while. Then when it started getting into summer, that's when the check engine light started coming on. It lasted during the winter, but for strange reason, it hasn't come on for a while now.
I have a wierd feeling that when it begins to get warm again, it'll start happening again.

I took it to a shop, and the mech. told me he cleared the codes in the ECU. Was fine for a while(doorlocks started working again!?), but soon it was back to square one. About 3 weeks ago, the doorlocks was working one night, then in the morning, it wasn't.

It's something wierd that I just don't understand. Also, when the check engine light comes on, the idle speed would drop. But it never once cut off on me. GO HONDA!!!

 

these are the codes for 90/91 honda accords


1 . Oxygen Sensor.......Problem in 02 sensor circuit

2 . ECU.......No signal to ECU

3 . MAP Sensor .........Electrical problem in MAP sensor

4 . Crank Angle Sensor (CRANK)......Open or shorted signal circuit

5 . MAP Sensor ............Open or shorted signal circuit

6 . Coolant Temperature Sensor......Open or shorted signal circuit

7 . Throttle Angle Sensor ...........Open or shorted signal circuit

9 . Crank Angle Sensor (CYL)....Open or shorted signal circuit

10. Intake Air Temperature ........ Problem with Sensor

12. EGR System ............... No EGR action

13. Atmospheric Pressure (PA) ..... Problem with PA circuit

14. Electronic Air Control Valve (EAVC) ....... Electronic air control valve

15 . Ignition Output Signal ....... Electrical problem in signal circuit

16 . Fuel Injector .........Problem in fuel injector circuit

17. Vehicle Speed Sensor (VSS) .....Open or shorted signal circuit

20 . Electrical Load Detector ......Problem with electrical load detector circuit

30 . A/T FI Signal (A)...Problem in automatic transmission control unit and ECU circuit

31. A/T FI Signal (B)... Problem in automatic transmission control unit and ECU circuit

41 . Oxygen Sensor Heater..... Problem with 02 sensor circuit

43. Fuel Supply system ....... Problem with 02 sensor circuit or fuel system

(1) If codes other than the above are indicated, repeat self-diagnosis. If code (s) reappear, substitute a known good ECU and recheck codes. If code (s) clear, replace ECU.

I don't know what codes 8 & 47 indicate, but it may be that your ECU needs to be replaced. boy you've got your work cut out for you. hope this helps