Messages

1

Engine management / Re: 1991 318is m42 idle problem

« on: July 22, 2015, 10:55:03 PM »

I finally solved my problem! It turned out to be a vac leak. I was able to get my friend who's a savvy mechanic. He pointed out that I installed the ICV wrong. I put the clip (not sure what it's called) that connects the ICV to the engine under the intake manifold, thus leading to a vac leak. I'm not sure if that makes sense, but the point is it was a simple fix. It's kinda embarrassing how simple of a fix it was for my problem, but then I remember the reason I got an E30 was so I could learn how to fix cars.

2

Engine management / Re: 1991 318is m42 idle problem

« on: July 14, 2015, 09:50:46 PM »

Okay I feel I can finally update. I've also done everything I felt I can do. Allow me to recap. I replaced the ICV, intake boot, all of the hoses, fuel filter, intake manifold gasket, throttle body gasket, air flow meter, and spark plugs. I did a smoke test, but it wasn't a very good one. I did it with a paint can and , but I couldn't get the paint can to seal so not much smoke went through. I did see some smoke come from the ICV area. Because of how little smoke I was able to pump through the intake system not much came out, I wasn't able to pinpoint an exact source. I even bought a diagnostic tool, no codes came up. Other than that, I have no idea what to try next. I'm open for ideas.

3

Engine management / Re: 1991 318is m42 idle problem

« on: July 05, 2015, 03:58:17 AM »

I was afraid I installed it incorrectly, but then I tried to put the hoses together in a different way, and it simply didn't work. If I anybody has a picture of on E30 inake setup with the heater delete, I'd really appreciate it. I did put a hose clamp the hose going to the intake boot. Now the idle has changed to reving between 400-1000 rpms, as oppose to reving between 600-800. It's also revs slower than before. Does this mean I'm on the right track? Again I do plan on doing a smoke test I just haven't found time to throw something together and do the smoke test.

4

Engine management / Re: 1991 318is m42 idle problem

« on: July 02, 2015, 02:15:37 PM »

.... Well I do live in Colorado and I am over 21, so I don't need to worry about the cops. All I have is a hookah, I'll try to make that work.

5

Engine management / Re: 1991 318is m42 idle problem

« on: July 02, 2015, 12:58:08 AM »

Okay, ordering an OEM AFM did nothing as well, which really bums me out. I plan on doing a smoke test now. What is the best way to go about doing one?

6

Engine management / Re: 1991 318is m42 idle problem

« on: June 24, 2015, 09:27:55 PM »

I'll do that next. I also think the AMF I ordered was too cheap, so I took the hit of ordering an OEM one and I'll post an update of how that goes. Should be early next week.

7

Engine management / 1991 318is m42 idle problem (SOLVED)

« on: June 20, 2015, 10:01:13 PM »

    I've had this problem for a little over a month now. It all started when I was feeling ambitious and wanted to fix a minor idle problem. This minor idle problem was when I turned on anything electrical (like the heater) my revs would drop a little, then immediately go back up. Keep in mind it was running fine at this point. I did a little research and thought it might be my IVC. After I cleaned it, and put everything back together, it'd idle erratically between 600-900 revs. If I gave it any gas, it would rev up then turn off. Thus making my car undrivable.

   I replaced the ICV, thinking I ruined my last one. That did nothing. Proceeded to replace the intake boot, the intake manifold gasket, and fuel filter. All did nothing. Then I got frustrated and decided to take it to a credible local shop to get diagnosed. This shop has been in business for over 20 years and only works on European cars. They tell me I need a new AFM and the hoses are wrong in the intake. When I got my car back from them, the idle problem changed. Now when I go to turn on my car it'll rev up and immediately turn off.

   I replaced the AFM, that seemed to do nothing. I haven't put in new hoses yet because I think they're the result of the previous owner doing the heater delete and the shop isn't aware of that (they claimed they were though).

   If any clarification is needed please let me know. I'm also happy to take pictures or video if necessary.