CPS or TPS? Help
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Laughing Gas
Joined: Jan 2006
Posts: 1,045
Likes: 5
From: Gig Em, Tx
CPS or TPS? Help
Truck will hesitate when coming off of idle sometimes. Died once but restarted while still rolling. Does this sound like the CPS? Or, could it be the potentiometer in the gas pedal trying to open up? Don't have any experience with CPS going out. Does it misbehave first or just up and die all at once?
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
Your symtoms don't sound like something you would see in a bad TPS or IVS in the pedal assembly as far as the dieing with no throttle. A CPS can fail intermitantly or die totaly all at once. The thing that bothers me it that you say it only does it when starting from a dead stop or when you come to a stop on idle. A failing CPS could exhibit these symptoms but usually you will have periodic 'hiccups' while cruising with throttle feed. Have you scanned for any codes? If not, it may be a wise thing to do before you start throwing money at the problem.
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Laughing Gas
Joined: Jan 2006
Posts: 1,045
Likes: 5
From: Gig Em, Tx
Thanks for the reply. I have not yet checked codes. Wise advice. The only reason I thought it may be involved with the throttle is since it just occurs when it is first moved. I'll do some more checking.
