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Old 06-12-2004, 09:43 PM
suginami suginami is offline
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Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
Quote:
Originally posted by jeffandmaria
I did replace the plugs and boots. Are there any other vaccum lines I should focus on? How can I test for the airflow meter you are referring to?
Yes. Check the plastic vacuum line that I referenced in my earlier reply. That is the most common place for a vacuum leak.

I had a similar problem, but the idle went up and down like crazy. The car was not driveable. The vacuum leak was at the intake manifold gasket, but I believe my situation was very unusual.

You can test a mass air meter if you have a scope, but I've never done it.

I gather from the techs that it takes more time to test them than they're worth.

Instead, most shops keep a good mass air meter on hand and switch it out to see if it makes a difference.

You can replace your mass air meter with a phillips head screwdriver and about 15-20 minutes. The problem is that you don't have a known good spare MAM to swap with yours, and they cost a couple hundred dollars. Most shops don't allow return on electrical items, so tread cautiously on this.

The throttle actuator costs about $1,200 by the way, so keep your fingers crossed.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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