Hello All,

Ok so I have a 2001 Blazer, 4x4, 4.3 with 92,000. When it is hot outside my Blazer is stalling when I stop at signs. Runs great when I am on the gas or if the engine is cool. Also had trouble starting for a couple days.

Things I have done already: new Crank Sensor, engine coolant sensor, fuel filter about 6 months old, checked fuel pressure and it was good.

Was told my timing was off and my harmonic balancer was off by a auto place after they diagnosed it.

Please help any thoughts....

Thanks

 

Is your fan turning on or do you have a clutch fan?

 

whats the fuel pressure? Have you done a leak down?

 

Not sure what you are referring too....how do I check?

 

I beleive the fuel pressure was a little over 60. What is a leak down?

 

96+ Fuel System Diagnosis - Blazer Forum - Chevy Blazer Forums

This will explain the leak down Procedure .

 

So could my fuel pump be failing when the vehicle gets warm/operating temp?

 

check the fuel pressure when she stalls and see what the results are.

 

I believe I have a clutch fan

 

Icm can fail intermitently when they heat up. They can be bench tested but IMO it's a BS test because when you bring it in it's cold. Also if it has not been replaced before you need to drill a couple of rivets out anyway.
Hey how long does it take to start back up, what I mean is do you have to let it cool down? Sometimes if it starts right back up it can be ignition switch. Does your airbag and abs light come on just before stall?