99 Tahoe cutting off

[MrHawgWild65]

Have replaced fuel pump and filter twice, dropped gas tank and it's clean, new fuel pump relay, cleaned throttle body.

It will drive fine for a few minutes, but it seems after it starts warming up it starts cutting off. Any ideas?

 

[lesterl]

What is your fuel pressure? Does it bleed down real fast? What does the CTS ohm out at?

 

[kirkiscool]

check the fuel pump relay.

 

[Ice98]

I believe there is an adjustment for idle speed as well, should make sure that isn't set wrong, it could also be a bad sensor in any number of places

 

[lesterl]

NO IDLE SPEED ADJUSTMENT, that is controlled by PCM/ IAC.

"new fuel pump relay,"

 

[kirkiscool]

gotcha, check out my thread I just posted. a bad pump caused my relay to get hot and eventually melted the socket for the relay, now a new relay doesn't make a good connection because the socket is bad. Still trying to figure out how to fix it.