Messages

1

Engine + Driveline / Re: E36 M42 hitting a "wall" at 3,000 rpm? Bucking, hesitating, etc

« on: December 17, 2014, 02:14:55 PM »

Thanks again for the help. Ive had e36's with the m44 and e30's with the m42, but this is the first e36 with a m42. Is the "mess under the intake" the same as the e30 m42? Ive done that before, but these werent the symptoms. Id imagine I will be doing it regardless, but will definitely try the other things you advise. The reason I ask about the intake hoses is because last time I did it on my e30, I called the dealer and got them all. This time I called the dealer and they told me there are no such part numbers and it just regular rubber line. I remember it being specific hard and soft lines, but that was 8 years ago. And as far as that code goes, I bet its just the o2 sensor picking up a lean condition from a vac leak. Thank you once again!

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Engine + Driveline / Re: E36 M42 hitting a "wall" at 3,000 rpm? Bucking, hesitating, etc

« on: December 17, 2014, 10:41:15 AM »

So I got a 1222, which is Oxygen Sensor Lean/Rich Detect (primary).......so that makes no sense, especially at idle only. As soon as I touch the gas it goes away, even a tiny tap. As soon as the revs drop back down it comes back in 2 seconds. But again, its the surging that Im more worried about. Im thinking its a vac leak and the unmetered air could be the problem?

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Engine + Driveline / Re: E36 M42 hitting a "wall" at 3,000 rpm? Bucking, hesitating, etc

« on: December 16, 2014, 08:10:15 PM »

Great place to start. Thanks!

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Engine + Driveline / E36 M42 hitting a "wall" at 3,000 rpm? Bucking, hesitating, etc

« on: December 16, 2014, 02:21:51 PM »

The first time I drove this car in rain (no chance of water ingestion), I couldnt get it to go above 3,000rpm.....kind of like hitting the rev limiter but a little more violent. Keep in mind the other 120 or so miles I had driven it prior (dry conditions) gave me no such issue and pulled clean to redline. I parked it, drove it again in the dry and now my "rev limiter" is still there but raised to 4k cold and 5k warm. Also, I now have a CEL at idle, but only when warm and the idle is sometimes higher than usual at up to 1500rpm's. CEL goes away as soon as I touch the gas pedal. I just bought this one and am about to embark on brakes, suspension and respray but now I need to clear this up first. I have no OBDI anything, so looking for anyone that has dealt with this before. All suggestions greatly appreciated!

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Engine + Driveline / Rough idle/stalls when started warm?!?!?!

« on: January 17, 2009, 03:42:31 PM »

Oooh tried that, so no $$$ for you....but thanks for the help!

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Engine + Driveline / Rough idle/stalls when started warm?!?!?!

« on: January 17, 2009, 10:13:53 AM »

Yeah my other e30 I had to replace all the hoses, so Im familiar with the process. Idle control valve...gotcha...its the morning so Im not all there just yet. Its been cleaned so I guess replacement is the next step, and $168 isnt so bad really, just as long as it works!

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Engine + Driveline / Rough idle/stalls when started warm?!?!?!

« on: January 17, 2009, 09:46:03 AM »

I just bought this one a month ago, and its spent that whole time getting paint. Now thats done I wanna look further into this. Im gonna tear it down hopefully next weekend. Hoses are pretty new and I dont hear any vac leaks. Whats the icv?

8

Engine + Driveline / Rough idle/stalls when started warm?!?!?!

« on: January 17, 2009, 09:39:28 AM »

If I start it when the motor is cold, everything is fine. But when I start after the motor has been run, even if its just for a minute, its spits and sputters with the revs jumping between 300 and maybe 1200 requiring you stay on the gas to keep it from dying out. If I start it and try to take off while its doing this, it will have like 3 horsepower and then once it passes 2,000 RPM be just fine. No matter what you do, the problem lasts about 1 minute and goes completely away. Is this some problem with a cold start valve or something like that? Thanks