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car wont start at operating temp

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boostalon

Probationary Member
1
0
Apr 27, 2006
virginia beach, Virginia
i have a 1990 gsx i put a new engine in and when it reaches operating temp it wont start
.when its cold it will start right up.
 
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Bad engine temp sensor (or coolant temp sensor) for ECU - not the gauge one or a wire fell off so ECU always keeps mixture rich. You could have a Injector stuck open.
 
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