no start after car gets hot - Ford Mustang Forum
 
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post #1 of 3 (permalink) Old 04-01-2014 Thread Starter
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no start after car gets hot

on my 01 when i shut off the engine when its gotten hot and go back to start it, it doesnt start. it turns over has gas and battery. after it cools down for at least 45 min it wil start up and run fine. its a built motor with a sct tuner, s/c. what is my problem?

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post #2 of 3 (permalink) Old 04-03-2014
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My suggestion is to verify the IAT is supplying valid values to the PCM. Also check that the reported ECT values are reasonable.

Double check the fuel pressure. Is it reasonable?

Double check that the fuel pressure sensor intake vacuum reference line is connected and leak free. Inspect the line for raw gas.

Cycle the key on/pause/off several times without cranking. Does this improve starting? If so, suspect fuel pressure leak down as a possible cause,

Then I would suspect the tune needs adjusting.


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post #3 of 3 (permalink) Old 04-03-2014
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^ This. I would do a compression check of the cylinders and check your cooling system too.

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