Won't start when warm, runs high/rich

[Earl43P]

Rich with high idle might be the fuel prressure regulator.
No change when you remove the vacuum line condemns it. Make sure its hose HAS vacuum.
http://www.fordfuelinjection.com/?p=41

Check the ECT; it has a lot of input just like the IAT does.
http://www.fordfuelinjection.com/?p=28

And of course, vacuum leaks.

If it were the IAC, it should still start if you slightly press the gas pedal to give it air.

Here's the MAF pinout, but no good/bad values. http://www.fordfuelinjection.com/?p=26

 

[disciplerocks]

Bump

 

[disciplerocks]

Added some grounds, picked up a couple MAFs from the u-pull and swapped them out. Reset the ecu both times, started it and ran till it reached operating temp. Shut it off and tried starting it again and it still wont.

 

[disciplerocks]

Anyone?

 

[Duane867]

Have you tried a new IAT yet or tested the old one ?

A faulty ground at the EDIS module will cause a no start condition too. EDIS is located in front of the battery tray and its mounted to the core support. The ground wire is a black wire with light green stripe on a 90'. Follow it to the connector. If there is no brass sleeve on it at the terminal replace the ground circuit terminal with a new one by splicing it in.

 

[disciplerocks]

Doubt its the IAT. It pulls same temp air in whether the motor is hot or cold.

I'll check the EDIS.

 

[disciplerocks]

Got it fixed. Bad ecu. Swapped it out for one I picked up at the u-pull. Thanks everyone for the help. Repped.

 

[Duane867]

Glad you got her fixed.

You know I have never noticed the rep thing until you mentioned it.