I gotta 88 ford f150 its gotta 302. It starts up fine and will run great until it warms up then it just dies and wont start again til it cools down. When it shuts off its got 35 pounds of fuel pressure so i dont think its the fuel pump. i put a new ignition module, throttle position sensor and a fuel filter on it and it still does it. Im out of ideas and i need some help.

 

I am almost running into the same issue on my 92 F-150 with the HO motor, the truck will idle really bad once it gets warm...

 

mine will start idling real rough and if i try to give it gas it dies

 

Hmm, that's weird maybe the fuel pressure regulator..?

 

Check your ECT sensor.

 

I just put a ect in it and it still does it

 

The one with two wires on it?

 

yea ive put all kinds of parts on it and still cant figure it out

 

Have you tried to pull the codes?

 

no i dont know how to do it or anyone who can do it and the closest auto parts store is 12 miles away

 

hello 1988greenpig have you tried disconnecting the egr valve and pluging off the vacume line, this is where i would start because if it dies like you turned the key off,
this is a sympton of the egr valve,i dont know exactly but when an engine warms up the egr silinoid suposed to do something , and this ideal does not cost anything to try,
only a fiew minutes of your time , and however long it takes for your truck to warm up.
i hope this is it and good luck

 

This URL will tell you how to do it:
http://fordfuelinjection.com/?p=13

 

Somethin's happenin' when it goes into closed loop.......

 

or a bad coil even if new could be bad

 

Did you ever figure this out? I'm having the same issue.