Engine My engine dies after running 10 to 15 minutes under high heat.

[Wylieone]

I have a 1990 GT hatchback. It doesn’t run more than 10 to 15 minutes before it shuts off. I live in South Florida. I have changed multiple parts, including new fuel pump new fuel pump relays new distributor relocated to TFI to the passenger side fender well, I have a new distributor. I have all new wires and plugs. I have a new coil. My TPS and idle are set correctly. I have a new alternator new mass airflow sensor, new fuel sensor relay, refurbished EEC, new EEC relay. It continues to die. I am out of options if anybody knows why this is happening or how to correct it please let me know.

 

[AeroCoupe]

Assuming you have pulled codes?

 

[General karthief]

Besides checking codes, you need to monitor the fuel pressure while the engine is running and see if there are any pressure changes when the engine gets hot and dies.
At least that's where I'd start.

 

[Wylieone]

Besides checking codes, you need to monitor the fuel pressure while the engine is running and see if there are any pressure changes when the engine gets hot and dies.
At least that's where I'd start.

No codes are coming up. I have consistent fuel pressure at 35. The car just stalls out with no drop off in fuel pressure. I have also tested the spark at the coil and at the distributor. Its bizarre why this is happening.

 

[gkomo]

By no codes do you mean you get nothing? Or code 11…10…. KOEO then code 11 again in KOER?

 

[Wylieone]

Yes thats correct

 

[AeroCoupe]

Which one is correct? 11,10, 11 or nothing?

 

[Mustang5L5]

SO when it does. Does it restart easily? Does it not restart until cooled down?