need some help

[KevinR]

Truck stalls while you are driving or it will stall at a light took it in to the dealer today and could not find anything wrong with it no codes popped up and it would not stall on test drive looking for some input on this or if this has happen to anyone else. dealer is keeping it over the weekend.......

thanks

KevinR

[KevinR]

my the way its a 2001 2500hd 4x4 with 6.0 in it 58,000 on it

[snoman]

Does it do it all the time or is it worse when you refuel it?

[KevinR]

don't matter it doe's it when it wants to stated doing it about a week ago it stalled 2 time that day and then ran fine intill fri on my way home from work it stalled about 12 times in a 25 miles drive home stalled at light or taking off from the light or just driving down the road so on the way home stop by the auto parts store and picked up a fuel and air filter then today on the in to work it started acting up again and pissed me off so i took the day off and drop it off to the dealer

[blue2kzr2]

I'm guessing the TCC switch or the TCC isn't releasing. The TCC not releasing is like stopping a stick-shift without pressing the clutch. Also, how old is the battery? I've heard a dying battery will cause similar symptoms. Are the O2 sensors original? They may be REALLY lazy and causing this, though if they're that bad they'd be throwing a code...

[snoman]

I'm guessing the TCC switch or the TCC isn't releasing. The TCC not releasing is like stopping a stick-shift without pressing the clutch. Also, how old is the battery? I've heard a dying battery will cause similar symptoms. Are the O2 sensors original? They may be REALLY lazy and causing this, though if they're that bad they'd be throwing a code...

I may be wrong but I am think a fuel problem here or possible ignition problem depending on how it stalls (if it starves out or surges and stalls it is most likely fuel, if it cuts dead off like a light switch then you are looking at a ignition issue is my guess anyway)

[KevinR]

to me i think its a fuel problem just my the way it acts bogs down starves out Dealer is thinking it may be the crank sensor if it gos bad it will not show a code

[KevinR]

fuel psi is 35 lbs he said does that sound right

[snoman]

Check for water in fuel then too.

[blue2kzr2]

35 sounds low for a late-model FI system.

[Frank S]

35 sounds low for a late-model FI system.

Agreed.

 

If I recall correctly,you should be in the 50 psi range,possibly even a little higher.

[blue2kzr2]

GM says it should be 55-62 PSI.

[KevinR]

Thanks for all the help i am going to the dealing in the afternoon and see what they found wrong....... i will let you all know what comes of it and again thanks

 

Kevin R