1990 M103 economy gauge shows vacuum problem?

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1990 M103 economy gauge shows vacuum problem?

#15

04-09-2011, 05:36 PM

JohnM.

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Join Date: Dec 2007

Location: NorCal

Posts: 1,332

I would check the throttle position switch on the throttle body. It's pretty simple on the M103 cars. But it basically indicates to the ECU whether you are at idle or WOT. If it's stuck in the idle position, that could be causing your issues.

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