2G WOT issue gas pedal stuck

[aarixx3]

Have an auto 97 gst with an issue when WOT. Doesn't matter if it's at 10mph or 70 but when I bottom it out, it gets stuck in the floored position. Kinda scary and a serious issue, I am guessing the throttle cable... I usually throw it in neutral and hit the brakes,or stomp on the gas pedal to get it unstuck. Also know that my cruise control doesn't work not sure if it's removed or not, but it probaby doesn't have a non cruise control cable. What steps should I take to diagnose this?

 

[rhodes2010]

Same thing happened to me on a 96 GSX and freaked us out! Could not solve this and it drove me nuts until...

And I wrote about this somewhere on this forum - In the cabin. Where the throttle pedal is attached
and the cable is attached and goes through the firewall. There was a piece of like plastic tube that was
probably the inner lining to the throttle cable but broke off at 2 or 3 inches long and when we would WOT the little
piece slide out and basically cannot slide back into the outer cable tube. It caused the pedal to stay stuck wide open like a stick just keeping it open.

Before I found this I was busy lubing the cable, looking for anyplace under the hood where it was sticking,
looking for a mechanical problem.

I either glued the small tube back inside the firewall where it is supposed to stay. Or broke it off completely.
So climb down there and move the pedal with your hand with engine off and stare at the spot
where the cable goes through the firewall. You should only see cable and nothing else.

I did eventually take a cable out of a junkyard car, but never bothered putting it in because ours has not given me any trouble since finding this odd problem.

Good luck with yours.

 

[952g63t]

Get a non-cruize cable and get rid of the cruise linkage. It's really easy to do, cleans up your engine bay and you get better throttle feel/response.

https://www.extremepsi.com/store/product.php?productid=19030&cat=0&page=1

 

[Schmegma]

This! Get a non c/c cable and that should fix the issue. Also clean out the throttle body - might have some carbon build up

 

[frankdsm179]

Before you start swappin parts make sure that it is the throttle cable and not the throttle body. Physically turn the throttle body and make sure it doesnt get stuck there, also climb under the under the dash like stated above and watch the cable function

 

[hotrodssnova]

Also check the grounds to the throttle body and intake manifold. Engine could be looking for a ground through the throttle cable and caused a spot weld somewhere on the cable.

 

[TalonKaos]

I had the "stuck wide open" mod too. You really learn how powerful your car is when It breaks the leash..haha. I went swerving across the double yellow into traffic before I got it stopped.

There was a piece of like plastic tube that was
probably the inner lining to the throttle cable but broke off at 2 or 3 inches long and when we would WOT the little
piece slide out and basically cannot slide back into the outer cable tube. It caused the pedal to stay stuck wide open like a stick just keeping it open.

I've already rebuilt or replaced the parts involved but Im gonna look into this. Good information.

 

[born2race]

I remember when my pedal got stuck to the floor it was because the cruise control box attached to the throttle cable would seize up. Even though I never used the cruise control. I sprayed wd-40 in the box while opening and closing the throttle. Problem went away.

 

[ADarling_GSTX]

The mechanical module for cruise control is above the fuse box. Check that, but you might have a kink in your throttle cable as a result of possibly bending it too far. Give the throttle cable an inspection.