Gas pedal hard to push

whenever i start the jimmy,the gas pedal is hard to push.Once i press it hard,it is normal to push and the pedal is normal like it should be.Once i shut it off again to go into a store and start it,its hard to push again.i dont understand what the prob is.It only occurs when i start the jimmy,can any help or might of had this problem .

Ive got a 97 Jimmy with the same problem. It seems to me like the darn thing gets hung up on something, but i dont know. mine did it for about a week, and it even started doing it while i was going down the road and let go of the gas pedal, then tried pushing it in again. It hasn't done it for a while anymore though, but i didn't do anything to try and fix it.

whenever i start the jimmy,the gas pedal is hard to push.Once i press it hard,it is normal to push and the pedal is normal like it should be.Once i shut it off again to go into a store and start it,its hard to push again.i dont understand what the prob is.It only occurs when i start the jimmy,can any help or might of had this problem .

You do know on a fuel injected vehicle you don't touch the gas to start it.

Hey we had this problem on our safari van. It was like the pedal would get stuck in the up position. I guess you just have to get some grease or silicon spray and apply it to the cables and moving mechanism on the throttle body.

I think he is pushing the gas pedal while starting it and he is fighting the computer when starting it which explains why he is gets better as soon as it is started.

Hey blazer,i know not to hit the pedal.I`m talking about when i take off its hard to push.thnxs for reply though.Its like something is locked up when u first hit the pedal after starting it.Then its normal. ThanksAll

What I would do is remove the intake where it connects to the TB and make sure the butterfly is cleaned and is seating properly.

Sometimes gunk and carbon cause it to stick around the circumferance around it.

Use TB cleaner and a toothbrush to clean it.

BlazerLT was right, I took the intake off, and moved the throttle cable to where the butterfly opened a little, and there was a bunch of black gunk on the walls of the throttle body, and on the underside of the throttle body itself that was causing the pedal to stick sometimes. I just took a rag and wiped it clean.

And everything is kewl now?

Just to note, you should buy some throttle body cleaner and spary down the TB butter fly and get the under side of it also.

Most people forget about the underside.

I actually have the exact same problem and just narrowed it to the butterfly...guess ill go clean it now

thanks

I actually have the exact same problem and just narrowed it to the butterfly...guess ill go clean it now

thanks

I recommend doing both sides and giving it a good scrub when wet with the toothbrush and rinsing it off.

My blazer was doing the same thing, it was the butterfly. I just used a tooth brush and some rubbing alcohol. TB cleaner would probably be better though. Mine still sticks a little, not as bad though, could be something else too.

well i went and cleaned it today and unfortunately it didnt work...its stuck really good(i literally have to kick my gas pedal to get it unstuck). This is a big problem cause once its unstuck it stays open so my rpms are rediculously high. Anyone have any thoughts on this...do i need to replace the throttle body??

When you clean it, you have to wipe away all the loose sludge. If not when you close the butterfly it will push all the sludge into the cracks and when it dries it will make it worse

it didnt have time to dry...because it never came unstuck.

Did you try to unstick is any spray TB cleaner around it to clean it up?

well i went and actually took off the throttle body and i found that it is not the butterfly. One of the plates is warped and it is binding which is keeping the throttle open. Im just gonna go down to the wrecker and pull a body to replace it.

whenever i start the jimmy,the gas pedal is hard to push.Once i press it hard,it is normal to push and the pedal is normal like it should be.Once i shut it off again to go into a store and start it,its hard to push again.i dont understand what the prob is.It only occurs when i start the jimmy,can any help or might of had this problem .

I had the same problem on my 98 Jimmy SLT. I was told by the dealership that the throttle body needed cleaning. They cleaned it for under $50. That was a couple of years ago and I have never had a problem with it since.

dang, how'd you warp it?

dang, how'd you warp it?

It can't be warped, no way is there enough heat up there to warp it.

believe me ive got the thing out and im looking right at the plate and its bent and rubbing against the wall inside the throttle body. Dont know how it happened...but im just gonna go grab another body for 25 bucks...problem solved.

We need photos of this.

Well after reading this thread I decided to try cleaning mine again. This time I bought STP Throttle Body and Air Intake Cleaner...it worked ten times better than the rubbing alcohol and toothbrush I used the first time. You don't even have to scrub it you just spray it clean.

Mine is now working great and doesn't stick at all.


****EDIT****

Forgot to mention, it smoothed out the idle too.

I would also like to see the pics of your "warped" plate.

id like to show ya....but i dont have a digi cam to upload with...sorry

ok i have a different question. I went down to the wrecker to pick up a throttle body and they have lots of them but none with the vacuum outlet that goes to the air cleaner assembly like mine does. if i use one of these and disconnect that vacuum line it shouldnt matter right??

Hey guys,
I must say that that plate can be warped and cause problems like it did in mine, i started a thread about this, here is the link:
http://www.automotiveforums.com/vbulletin/showthread.php?t=301242
I am still not sure why this happened, I belive I still have the warped plate sitting around somewhere once i find it i will take pics and post them for all to see,

And i hate to say it but the IAC had nothing to do with it, my problem was because of this warped plate,

savage8190 if you just open the throtle body and remove the warped plate your vehicle will once again be drivable, Oh and ever since i got rid this plate the engine revs up faster, not sure why but it works for now

just to let everyone know i changed the body and everything works great now

Awesome, will remeber this for next time someone else has this problem.

I sprayed carb cleaner down the intake while another person reved it up to 1500-2000 rpm
That freed up my pedal. I might do it at every oil change also.

No, you shut the engine off, spray the butterfly and area with carb cleaner and scrub it with a toothbrush then rinse with cleaner again.

You will have to open the butter fly to get the back side and around the edge of the butterfly and the TB body itself.

You did not read my post correctly. I said I fixed mine by leaving the engine running and spraying the cleaner in......past tense.

You did not read my post correctly. I said I fixed mine by leaving the engine running and spraying the cleaner in......past tense.

And I am stating that that is not the proper way to properly clean a sticky throttle body butterfly.

All the replies you have gotten are correct. The problem is carbon build-up on your fuel throttle. The mechanic shops spray brake cleaner on the throttle fly and wipe it thoroughly. Repeat this process 2 or 3 times to make sure you have removed all build-up. You will have to do this about 1 or 2 times a year being that these vehicles are bad for carbon build-up. This is what I was instructed to do by Goodpastures supervising mechanic in my town.

throttle body cleaner, NOT brake cleaner