Author Topic: Cold start engine shakes and sputters (Read 27412 times)

roundel318 · « **Reply #60 on:** November 15, 2008, 04:18:17 PM »

Also, do you have a M42 or M44?

bearsbmw · « **Reply #61 on:** November 15, 2008, 04:18:18 PM »

M42

the signal for the fuel consumption guage has signal going to my 5 button OBC and cluster on my car ... My OBC is currently not working and has been not working since this problem came about

roundel318 · « **Reply #62 on:** November 15, 2008, 04:19:17 PM »

What functions does your OBC have?

bearsbmw · « **Reply #63 on:** November 15, 2008, 04:20:21 PM »

Quote from: roundel318;60861

What functions does your OBC have?

it's the most basic one but acording to the wiring for my car it see's a signal for the fuel consumption guage

xwill112x · « **Reply #64 on:** November 15, 2008, 04:20:23 PM »

e30 318 has date, temp, time, and memo

roundel318 · « **Reply #65 on:** November 15, 2008, 04:21:06 PM »

What happened when you disconnected yours?

bearsbmw · « **Reply #66 on:** November 15, 2008, 04:22:15 PM »

Quote from: roundel318;60864

What happened when you disconnected yours?

Havent dont it yet while the car is cold ... I wan't someone else to give this a try

roundel318 · « **Reply #67 on:** November 15, 2008, 04:23:31 PM »

I have started mine up before cold without it connected, car ran fine.

bearsbmw · « **Reply #68 on:** November 15, 2008, 04:26:58 PM »

yes but your obc is not shorting out and working correctly unlike mine ... It could very well be the OBC shorting out and deliverying voltage to the ECU insted of the ecu sending the signal voltage

roundel318 · « **Reply #69 on:** November 15, 2008, 04:29:02 PM »

What year is your car bearsbmw?
The E36 OBC may only have 5 buttons, but it may be either a 11 or 18 function unit.
Just curious exactly what u got?

bearsbmw · « **Reply #70 on:** November 15, 2008, 04:29:52 PM »

last month of 94 m42 Manual

roundel318 · « **Reply #71 on:** November 15, 2008, 04:31:10 PM »

I agree! Indeed, while that is definately a possible cause, you would think it would happen all the time, not just when you start up your car?
Then again, with wiring problems, the sky is the limit

bearsbmw · « **Reply #72 on:** November 15, 2008, 04:34:38 PM »

yup this problem is most puzzleing... hope I figure it out soon

roundel318 · « **Reply #73 on:** November 15, 2008, 04:44:32 PM »

Sorry I don't have more experience with E36 OBC wiring, they are more complex than the ones on the E30.
Does your check engine light come on when you start up with it disconnected?

bearsbmw · « **Reply #74 on:** November 15, 2008, 04:45:38 PM »

Quote from: roundel318;60874

Sorry I don't have more experience with E36 OBC wiring, they are more complex than the ones on the E30.
Does your check engine light come on when you start up with it disconnected?

nope & e30 m42 only has a few minor diffrences from what I can see