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98 200 EFI Shuts down after 20 min

paul007

New member
My engine starts up and runs f

My engine starts up and runs fine for 20 min. then shuts down. It turns over but does not fire. After 6 hrs starts up and runs fine for another 20 min then shuts down again. I replaced the engine wiring harnes but still have the same problem.The beeper sounds the 3 beeps when the engine starts and also when it doesnt start so I guess I can rule out ign safty switch or lanard switch. (I am thinking ECU or bad ground)
Please Help.
 
"Paul,

That is not going to


"Paul,

That is not going to be easy to diagnose, but you must figure out exactly why it does not restart immediately. No spark, no fuel, etc. ?

Tony"
 
"Tony,
Think I found the prob


"Tony,
Think I found the problem. Idle control circuit. Engine only shuts down when I come back to idle after 20 minutes."
 
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