Truck starts to have ruff idle then dies after idle drops considerably.WHat could it be??
Have code for high O2 voltage but sensor works fine..High volt at cold start up and drops to normal range after warm.
sounds like youmight have a TPS or IACV issue, if you have your own scanner, with key on engine off view the data of the vehicle, look at your TPS it should measure between 0% and 100% that will signify a good sensor. also you could have a bad vaccum line on the throttle body, theres two or 3 that i remember, more importantly theres a large rubber one that goes into a small set of solid plastic ones, on my old ram that line rotted out and that, coupled with a bad IACV wouldmake my idle jump up and down and on hot days the truck would have an issue idling
thanks..i have checked the vacuum hoses & done a vacuum test..has good vacuum most of time..and sometimes is loses vacuum.but then goes right back up..i have a mac task master so i will look at tps but i usually cover my basics..i appreciate the reply i may have missed something obvious.with all this snow i have been running around fixing & gettin everything ready.
have you checked your crank shaft sensor? I had the same problem with my truck. I replaced the crank shaft sensor and the world started spinning correctly again.
It also would NOT hurt at all to put a can of sea foam in your gas tank the next time you fill up.
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