2003 Tahoe starts.... and dies

[rockola1971]

The anti-theft system shuts down the injectors.

Very true. But when it does it, there is a "security" light illuminated on the instrument cluster when it is in that mode.

 

[M1Gunner]

I would hook up a scan tool to it again and watch the bank 1 and 2 fuel trims with engine RPMs. MAF and MAP readings and also watch the evap purge solenoid duty cycle.

 

[M1Gunner]

Very true. But when it does it, there is a "security" light illuminated on the instrument cluster when it is in that mode.

This is true but he said he didn't know which was affected.

 

[rockola1971]

I would hook up a scan tool to it again and watch the bank 1 and 2 fuel trims with engine RPMs. MAF and MAP readings and also watch the evap purge solenoid duty cycle.

How would he do that when the engine DIES after 2-3 seconds?

 

[Matahoe]

This really seems like a bad FPR. OP smells fuel in the exhaust and it exhibits rough running symptoms.

 

[rockola1971]

Nah. This is just a bad for. He smells fuel in the exhaust and it exhibits rough running symptoms.

Is that english? (Nah. This is just a bad for.). lmao Go read the first post again and then get back to us.

 

[M1Gunner]

Nah. This is just a bad FPR. OP smells fuel in the exhaust and it exhibits rough running symptoms.

A stuck open purge valve solenoid will do the exact same thing.

 

[M1Gunner]

Is that english? (Nah. This is just a bad for.). lmao Go read the first post again and then get back to us.

His auto correct obviously changed fpr to for...

 

[rockola1971]

His auto correct obviously changed fpr to for...

Fill me in on that acronym. Fuel Pressure Regulator?

 

[M1Gunner]

Do you know about fuel trim data?

How would he do that when the engine DIES after 2-3 seconds?