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pop sound from engine.
Posted by vince v (more from vince v) on Mon, 7 Feb 2005 07:06:32
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My car is hard to restart after it gets warm 91 2.3l non turbo. If I keep the key turned and keep it cranking the engine makes a pop sound. After it cools off It starts up perfectly. Inbetween hot and cold (1-2 hours)it's hard to restart,and getting harder.It use to be I could get it to restart 3 times while it was hot, but now restarting it while it's hot is much harder much longer. What is the pop sound?
Also I have a check engine light (12111,12112 learning fault in lambda, air fuel mixture) ,(12223 fuel air mix lean) What is a learning fault?
This is what I,ve done.
Replaced FPR.
Switched AMM (checked volts at idle 2.0 increase throttle 3.9).
Replaced check valve at fuel pump.
Plugs 2 months old ngk checked them yesterday (lean but good).
I have jumped the hazzard and fuel pump fuse and the pump turns on.
posted by 68.40.6...
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