Gas Pedal issue

[shotgun]

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...

[Unleashedford]

Originally Posted by shotgun

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...

i have had these issues since i bought it on 2/17/2010

its just i thought i was normal because i have never driven another f150, but i went to my trucks house and he had the same truck as mine with a svt or sct something like that programmer with a custom tune and his truck ran awesome

and i have about 5000miles on it the most i cant remember the exact maybe 3500

and i havent messed with any of the custom tunes and the only thing i changed on my truck is i went from a 3in spacer to a 6in suspension lift

[Jackpine]

If you're showing 2000 rpm now at 70 mph, and with the tune you were showing the same rpm (2000) at 80 mph, your Tire Size (TS) is probably set too high in the tuned state, or, you have non-OEM tires on the truck and since you are runnig the "stock" tune now, your PCM "thinks" your tires are smaller than they actually are. So, with your lift, did you install bigger feet?

If so, your engine has to work harder than before to maintain that 2000 RPM in 4th gear with the Torque Converter locked. That will be noticed as an increase in engine sound.

And, since you have a 2004 truck, you may really need to clean the throttle body (and possibly the MAF sensor). Your symptoms sound like that could be the case and the problem is aggravated by custom tunes. I'd certainly pull the air cleaner housing and have a look at the throttle body. If if looks "gunky", clean it. Bill writes about this problem here: Power Hungry Performance - Frequently Asked Questions It's the first FAQ after "FAQs about Everything Else".

- Jack

[Unleashedford]

my truck runs 35in tires now, and i dont want to pull the throttle body apart since its electronic i dont want to mess with it

[Longshot270]

It's not that hard to check. All you have to do is undo one hose clamp enough to slide the black intake off of the silver throttle body. Then just look at the throttle body to see if it needs to be cleaned.

[Jackpine]

Originally Posted by Unleashedford

my truck runs 35in tires now, and i dont want to pull the throttle body apart since its electronic i dont want to mess with it

The TB is not electronic! It is a mechanical device that is actuated by an electric "positioner". If the TB and the MAF sensor are not clean, then a custom tune will not work right. Cleaning these two things is simply part of routine maintenance. If you don't feel competent to do it, take your truck to a dealer!

And, those big, 35 inch feet explain the difference in RPM between a tune and the stock setting (where the truck thinks you have OEM tires).

- Jack

[shotgun]

One of the moderators would like you to complete a service ticket.

Here's the link:

http://www.readydeskhosted.com/phptune/customer/rdlogin.aspx

I'll sent you a PM too.

[Unleashedford]

thanks guys well i just submitted a ticket thing to bill and i will see what happens.....tomorrow ill try and pull the Tb out and see if its dirty or not

but if it was dirty why would it have a better response in stock then in a custom tune?


and sorry that i replied late didnt have a chance to log in earlier