350 tbi shutting off when reaching temp.

[rolling_down_the_hill]

My son's truck keeps shutting off when the temp gets to 165 thermostat temp. It will not start back until everything is cold. Then same thing. It does leak a little oil and coolant. Does not smoke. I feel like it's a sensor but not sure what one.

 

[77GreenMachine]

What kind of truck is it and what motor?

 

[rolling_down_the_hill]

It's a 350 tbi.

 

[drkelly]

I'm far from an expert, but don't the HEI ignition modules some times act up and cut out when they get hot?

 

[77GreenMachine]

Wonder if it’s something in the electric choke

 

[Infamous1]

Coolant temp sensor is a possibility. Hit it with some starting fluid and see if it starts up. I had a TBI doing the opposite and it was the two wire sensor on on the front side of the intake with a yellow wire.

 

[rolling_down_the_hill]

When it shuts off it won't start no matter what untill the next day. I have replace the coil, tps, rotor button, ignition switch.

 

[Caver Dave]

Coolant temp sensor is a possibility. Hit it with some starting fluid and see if it starts up. I had a TBI doing the opposite and it was the two wire sensor on on the front side of the intake with a yellow wire.

Or the EST (7-pin "HEI module") or ESC...

 

[paulevans76]

If you unplug the temp sensor will it run/restart?

The ICM on the distributor can go bad from heat as well. If it's replaced without a good quality heat sink paste, the new one will go bad quick also.

 

[ckruzer]

The tbi's *almost* fall into the old maxim: fuel, air, spark.

I would check the distributor coil. Are there engine bay mounted ignition relays?