High revving from cold

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TaitRacing
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Mon Sep 11, 2006 12:42 pm

Hello people

The '85 320i that I picked up on Saturday is revving too high from cold, but is fine from warm, is this a common fault on the m20? If so, what do I need to buy.

Thanks in advance

Adam
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Mon Sep 11, 2006 12:52 pm

No this is not a common fault!
Just check that the springs and cables are all strong/free enough to pull the throttle right back properly when cold.

Later on you may want to check for air leaks around the inlet system and also that the TPS - Throttle Position Switch under the butterfly is working OK and clicks off when you remove throttle when cold.
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reory35
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Mon Sep 25, 2006 11:31 am

hi guys, where is the throttle position switch? haynes maunal is getting on my nerves lol!
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SGP
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Wed Sep 27, 2006 2:02 am

It's right under the throttle body.
If it ain't broke..
Fix it till it is :)
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