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Re: Check Engine - Idle Problems (archive)

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Posted by Jeff Goss on March 31, 2000 at 11:56:00:

In Reply to: Check Engine - Idle Problems posted by DD on March 31, 2000 at 08:57:35:

: Here's the problem... I just finished traveling about 150 miles and stopped to drop off some papers. When I pulled into the parking lot, the car was idling around 1400rpms. I turned the key, shut off the car and was gone for 3min. I came back to the car and attempted to start it. The car started, then died. I tried to start the car again, same result. So, I started the car with my foot on the gas, and it stayed running. However, the "check engine" light was illuminated. I drove off and came to a stop light. The car almost died, but I pushed on the accelerator to keep it running. This went on for a few minutes. If I gave it alot of gas, it would "choke" and almost die. After a few minutes, I came to the freeway and got the car up to 60mph (took a while) and then the check engine light went out and the car became responsive again.

: Can someone please assist me in determining how to fix this problem? I thought it might be the Oxygen sensor. What do you think?

: "cool blue"
: 1990 535i
:

It may be your idle control valve. If it goes bad the car will idle too high/too low and very erratic. The part is about $180 mail order and installs in about 10 minutes. Look on my website under the Tech section for a pic of the valve in the valve adjustment/manual area. There are other things as well but the list is lengthy.

Jeff Goss
The 535i Website
http://lennon.csufresno.edu/~jag62


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