Art161

I was on my way from San Francisco to Reno last week. About 140 miles into my trip, I pulled into a rest stop area. I had the automatic transmission in Drive, and my foot on the brake pedal (and only the brake pedal). As soon as I shifted to Park, the rpm shot up to approximately 6000 rpm and held steady. I then removed my foot from the brake pedal and blipped the gas pedal. The rpm dropped to normal. So far, I have not had the problem again.

The dealership could not duplicate the issue. They used OASIS with no success. They sent an Online Assistance Request to Ford. No help. Ford used the old, "It may be possible that this condition is induced by inadvertently pressing both the brake pedal and accelerator simultaneously." Yeah, except that's not what happened.

Has anyone else had a similar issue? If so, what was the fix?

Hey, Ford, it happened. I was there. Would it kill you to get off your collective duffs and actually spend some time diagnosing a problem instead of blaming your customer?

Nuke

At the very least I'd give the TB a good cleaning. Possibly check the TP sensor and its electrical connections, too. Anyone else have some thoughts on idle-related hardware? Maybe reload your tune if you're running a custom or reset the Adaptive Learning...

ironh19

TPS! OR IAC.

Art161

The dealership suspects fly by wire, throttle body and/or control of the FLW system. They checked and rechecked. Absent finding something specific, it seems as though we would just be throwing parts and/or labor at the problem.

I have a stock tune (probably the only one on the forum).

It's kind of interesting that the increased rpm occurred at the instant I shifted from Drive to Park, but the transmission tech does not think it is transmission related.

Edit: Mileage was about 14,500 miles.

ironh19

I have a stock tune!

Art161

I'll change the reservations for the annual stock tune forum members annual dinner from one to two!

FordService

Hey Art161,

Sounds like they actively tried to diagnose it, but I know how difficult intermittent issues can be to pinpoint. PM me your VIN, contact information, mileage, & servicing dealer name/state and I'll do my best to help.

~Natasha

shad2009

that's funny, well not funny lol...i work at a ford dealer and i was showing an F350 gas to a customer...when i went to go start up the vehicle to bring it to him, as soon as i got her fired up, she shot right up to 4000 rpm...i gave her a little gas and she went down to normal...it was weird

Art161

Thanks, Natasha. Ford wrote, in the Hotline Assistance Request, "No repair should be attempted until the concern can be duplicated." It seems to me that Ford does not want the problem to be located. Can you still help?

Art

Art161

Thanks for the post, shad2009. Yes, that's similar to what I experienced.

I can't figure out why blipping the throttle causes the rpm to drop, other than something is wrong. Well, obviously something is wrong when the car idles at such a high rpm. The reason I blipped the throttle was a throwback to when I drove cars with carburetors. That's what I did to get a cold engine to come off fast idle after idling for a couple of minutes. But that was the normal procedure for those cars.

I take the lack of any further response from Natasha to mean that Ford telling the dealer not to attempt a repair on the car is because Ford Customer Service has no clout once a Ford tech has spoken.