Gas Pedal issue

***Jackpine*** · #1 Sun, September 26th, 2010, 07:47 PM

I think there is a way to "recalibrate" the gas pedal, but I can't remember how to do it. (It may be in the owner's manual.) 88Racing posted on this several months back and it involves depressing the pedal all the way with the ignition ON and engine off maybe while you're reciting "Ford is God!" and so on.

I don't have time to search for it right now - have to get to a Grandson's birthday.

- Jack

***Longshot270*** · #2 Sun, September 26th, 2010, 08:58 PM

I remember it too, I'll see if I can find it.

***Longshot270*** · #3 Sun, September 26th, 2010, 09:03 PM

Ok, found the posts!

Quote:

Originally Posted by 88Racing

There's a relearn procedure.
KOEO.
Press down steadily till it bottoms out then back slowly to starting position 3 times.
Then turn off.
Then turn back on and start.
Going from memory here.
JMHO

[OP asks which pedal]

Gas pedal.
I'll look for the relearn proceedure.

[short time later]

Found it!

Just disconnect the battery for 5 minutes.
This will cause the PCM/ECM to reboot and the Keep Alive Memory to be erased so it can start a relearn proceedure.
You can do this while replacing the switch.

Peace!

Since it seems like the only thing you need to do is to try disconnecting the battery for 5 mins do clear the memory, then do that. The pedal pushing probably wont do anything but I copied it for refrence that these were the posts.

Unleashedford · #4 Sun, September 26th, 2010, 11:17 PM

Quote:

Originally Posted by Longshot270

Ok, found the posts!

Since it seems like the only thing you need to do is to try disconnecting the battery for 5 mins do clear the memory, then do that. The pedal pushing probably wont do anything but I copied it for refrence that these were the posts.

i have done that like 5 times already and it doesnt seem to help, would i have to turn the gryphon back to stock then do this or?

***Jackpine*** · #5 Mon, September 27th, 2010, 11:09 AM

Quote:

Originally Posted by Unleashedford

i have done that like 5 times already and it doesnt seem to help, would i have to turn the gryphon back to stock then do this or?

I think that MAY be the answer. When we apply an "advanced tune", the "drive cycle" code is erased. Now, no one has actually said this, but my feeble little brain tells me that possibly this "kills" the "adaptive learning" strategy built in to our PCMs. After all, we would not want our trucks to start rejecting the new tune's "improvements" in favor of going back to Ford's factory settings. So, set the tune to stock, disconnect the battery for 30 minutes or so and then reconnect. I'd drive it in stock for a couple of days after that before reloading the tune.

- Jack

Unleashedford · #6 Mon, September 27th, 2010, 02:34 PM

ok so today i returned it back to stock and drove it for 40 miles, HUGE DIFFERENCE!!!!

before on the freeway when i was crusing at about 80 mpg my rpm was at 2000 rpm and when i cruised at that speed i heard my intake bog really loud so i had to let go of the gas pedal then speed back up

now when i am crusing at about 70mph my rpm is at 2000 rpm and my intake doesnt bog at all!!

and also before when i put it into park my trucks idle went extremly low or just went low and turned off on it own.....

when it is in stock it runs a lot better and seems better in a general but when its in stock it has no way near the same amount of power as it did in 91 custom tune

shotgun · #7 Mon, September 27th, 2010, 02:53 PM

I wonder what could have changed since you initially installed the Gryphon and custom tunes to cause this problem to surface all of a sudden.

How long have you had the custom tunes? How many miles have you driven on the custom tunes?

Have you made any other modifications since you installed the tunes? Performed any maintenance?

Have you changed any of the settings in the Custom Options?

Just tryin' to get some ideas flowing...