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Discussion Starter #1
Whenever i first start my car it runs really good, as soon as it warms up it starts to hesitate and backfire when i let off the gas, has a new fuel fliter, fuel pump, tps is set to .95, timing is right (i believe). Could it possibly be the coolant temp sensor or an air pocket in the cooling system? also when warm it really hesitates going up hills, any ideas or help would be greatly appreciated, thank you.
 
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