Car revs on its own with foot off pedal...

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06-23-2010, 03:10 AM

#11

Orion_240

6th Gear Member

Join Date: Apr 2005

Location: West Los Angeles

Posts: 5,390

Toyotas are not the only car with drive by wire. And my 2005 used to accelerate all by itself, going vroom, vroom, vroom when my foot was off the gas pedal!
I have a co-worker who is claiming that his V6 is doing the same thing and have read reports of several other unintended acceleration events with the S197's.

06-23-2010, 04:59 AM

#12

Red Beast

4th Gear Member

Join Date: Nov 2007

Location: Orange, California

Posts: 1,454

OP, are you auto or manual?

07-09-2010, 10:27 PM

#13

sdwndr

1st Gear Member

Thread Starter

Join Date: Mar 2006

Posts: 104

All,

It turns out my throttle body was filthy. I cleaned it up and the car is runing fine.

07-09-2010, 11:41 PM

#14

VictoriaRR

4th Gear Member

Join Date: May 2007

Location: OC, California

Posts: 1,039

Quote:

Originally Posted by sdwndr

All,

It turns out my throttle body was filthy. I cleaned it up and the car is runing fine.

I was going to say... my car used to do that just before the throttle body shorted and had to be replaced. That happened about two years into my owning the car.

07-09-2010, 11:46 PM

#15

soon2bu

2nd Gear Member

Join Date: Feb 2010

Location: NJ

Posts: 275

Quote:

Originally Posted by sdwndr

I have noticed recently that after accelerating and then lifting my foot off the gas pedal, the car will rev slightly. It doesn't happen that often, only occasionally.

Also (perhaps this is related), it seems like sometimes when I am trying to accelerate away from a stop that the car doesn't want to move at first and then I end up giving it too much gas and I lunge forward.

Could these all be signs of a dirty/sticky throttle body or something? Any other ideas as to what could be causing this?

I originally thought it was a separate issue since they appeared at different times, but in case they are related here is a link to another thread where I discuss another issue:
https://mustangforums.com/forum/2005...gas-pedal.html

I am currently having this exact issue, and this only happened after I installed my TUNE/INTAKE. I got a second tune (did not let AM know of the problem) and it still persisted. I've been requesting a new tune for about a month now, so hopefully that'll fix the issue, if not than looks like I will have to clean my throttle body.

07-10-2010, 02:56 AM

#16

whyask

3rd Gear Member

Join Date: Aug 2008

Location: Basra, Iraq

Posts: 660

Is there a HOW to to clean the throttle body... Not asking for me but I know there a some on here that really don thave the skill set to be taking apart a throttle body to clean it .... Anything to help some of these young cats that are newbies to the mustang world!

07-10-2010, 08:48 AM

#17

Nuke

6th Gear Member

Join Date: Jun 2007

Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)

Posts: 16,182

Although you don't need to remove the TB to clean, it IS the best way. It's pretty simple to remove the intake piping and spray and wipe the TB. It also doesn't hurt to spray the MAF, too. Just use checmicals made for the application(s).

Many an issue can be resolved by trying these simple maintenance items before running to a shop and getting slapped with a big bill ("...and you needed your muffler bearings greased, too...").

07-10-2010, 09:32 AM

#18

Blue GT Mustang

2nd Gear Member

Join Date: Mar 2010

Location: In.

Posts: 154

Many an issue can be resolved by trying these simple maintenance items before running to a shop and getting slapped with a big bill ("...and you needed your muffler bearings greased, too...").[/QUOTE]

As well as bleeding your turn signal fluid.