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Re: Idle surge when cold--1995 525ia (archive)

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Posted by PhilH on October 21, 2001 at 12:37:23:

In Reply to: Idle surge when cold--1995 525ia posted by Chris C. (atlanta) on October 21, 2001 at 09:41:07:

I had a fluctuating idle before I replaced my oxygen sensor. How many miles are on your car? I believe BMW recommends replacement at 100k miles on an M50 525, but I was having problems at around 90k miles.

-Phil
93 525i 5 spd/now with 97k miles...


Hi:
Anyone experience this on their 525 or 530/540 auto?

Pull up to a light first thing in the AM or PM after sitting all day (ambient temps in the 40s) and the car surges 4 or 5 times against the brake (in gear) before settling to a normal idle.

Only happens on dead cold car.

Some kind of idle control valve issue?

TIA,
Chris C.





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