ENGINE QUITS WHEN WARM!

[So Bay Vetter]

My 96 LT4 shuts off at 150-160 degrees temp ( no spark, just cranks). After cooling completely, it will start and idle fine until 150-160 degrees and then shuts down again. Fuel pressure is fine, it seems that all electrical shuts down. Any ideas out there?

 

[6speeder]

Since you didn't mention codes...... are any codes available?

http://www.chevythunder.com/fuel injection troubleshooting pg a.htm

 

[So Bay Vetter]

Nope, no codes

 

[Robertwav1]

From my experience on OBD2...if no codes are present, I usually find it to be an open in the ignition circuit. As far as the computer goes, the key was turned off and everything is normal. 150-160 degrees points to thermal breakdown of an electronic part.

 

[MoeJr]

Crank Sensors will cause the problem you described.