Hunting idle, revs up and down - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 08-30-2010, 04:46 AM Thread Starter
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Hunting idle, revs up and down

Got a friend of mine who has a 1999 F-350, Auto. It has 208,xxx miles on it. at idle in park or drive, while sitting at a stop light or whatever, it wants to start hunting for idle speed. It revs up and down, maybe 300 rpms or so. when foot is steady on the accelerator in park, it does the same thing, it wont hold a constant idle. Its always fluctuating.

We think its the TPS, but not sure.
he had a mechanic replace some sensor on the side of the engine(he couldnt tell me what sensor) and was told that would correct his problem. it hasnt and hes wanting to know whats up.

Any help is greatly appreciated!

Nick
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post #2 of 2 Old 09-06-2010, 05:58 PM Thread Starter
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bumping this up. need some help guys.

Nick
E99/CC/Lariat/Factory Wide Body Kit
"The Mistress"
Power Hungry Performance HYDRA Chip
Custom Tuned by Bill@PHP, Tony Wildman@Total Diesel Performance and Lars@Gearhead



D66 w/Dieselsite WW2, Full Force 250/100s, Adrenalin HPOP, Built Trans, Walbro Fuel Pump, S&B Intake, 6" Stacks, Leveling Kit, Eagle Alloy Wheels, 315/75/16 Grabber AT2s & Much More




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