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Check engine light driving me nuts 200

posted by  someone claiming to be jorn on  Sun May 23 20:53 CST 2004 [RELATED]

I had a similar problem with the temp senser. Turned out to be a poor ECU earth connection which for some reason is connected to the manifold. It measured 3 Ohm to earth. Since it seem to be the wire, I made a local connection to earth and it solved the check light issue.

Since all measurements are taken from earth, a slightly faulty earth creates an incorrect reading.

Check it out






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