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Air mass meter diagnosis
Posted by Mike [Email] (more from Mike) on Wed, 17 Jul 2002 07:26:20
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I am having problems with the fuel mixture I on my 9000 turbo 1988. I checked the basics and have also adjusted the Air mass meter (AMM) from 461ohms to 380ohms and the black thick smoke; ruff-running engine is still there. Although, when I disconnect the AMM the engine runs, leaner (reduced black smoke but still a little ruff) and a lot better. Once I connect the AMM back on it runs like a dream but only for 3 seconds and then back comes the black smoke.
I fooled the system by pinching the fuel rail hose to reduce fuel pressure. This corrected the problem for about 10 seconds and then the engine died out due to fuel starvation. I just finished a head gasket replacement and the car has been sitting in the garage for 3 years. So it is definitely a fuel mixture problem but I just can’t figure out the cause. Can anybody help?
posted by 207.134.75...
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