Gas pedal pressure
Thread Starter
Team Owner
Joined: Mar 2012
Posts: 27,118
Likes: 135
From: Montgomery, Alabama
2017 C6 of Year Finalist
Gas pedal pressure
I got in my 92 Vette this morning to drive it to work. It started as normal and idled fine. When I applied pressure to the gas pedal I had to push harder than normal and the car did a jack rabbit start. I could not accelerate slowly from a stop. Once rolling the gas pedal seemed to work normally.
I have checked the cable and could not find any binding. It feels almost like a pedal push back. Any help would be appreciated.
I have checked the cable and could not find any binding. It feels almost like a pedal push back. Any help would be appreciated.
Burning Brakes
Joined: Nov 2011
Posts: 841
Likes: 1
I just posted the same question. My car needed to jump a little each time I pulled away from a stop, I think the throttle-body is sticking a little. I tried to oil the butterfly shaft but it didnt really help. The majority believe it's time for a throttle-body.
Advanced
Joined: May 2011
Posts: 85
Likes: 0
My 87 has the same problem--though not sure why yours just started sticking today. IF the butterfly valve shaft get worn, the butterfly can travel sideways and stick/hang-up on the inside of the TB. Mine was ok and the trottle cable is permanently lubed teflon [i think] so maybe something simple like the pedal is sticking or the floor mat is up against it--sometimes it is the simple things....
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
Could be throttle body related, either plates sticking on carbon or shaft is binding. Also, possible on a 92 for the ASR motor/cable assembly to have a issue as well. Remove the Black ASR Box cover to inspect the cable spool, IDK what you want to call it? Check pedal assy. itself, and obviously the cables. I've found it not uncommon for higher mileage cars with actual throttle cables to have the carbon make the plates stick a bit if the car is not at or near WOT very often. Never a problem on my Corvette.
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
The liner or sleeve thats inside the cable runs the length of the cable and can and does break and bind somewhere inside the cable sheath. It can be near the end where chunks fall out and tattle tale, or it might be way up inside where you will never see it. Wire strands also break and cause binding. If thats the case the cable must be replaced asap. The result of a stuck throttle on a C4 is not good...
I had it happen and drove a different car under a p/u before I could kill it and shift out of gear...That left a noticable mark on the hood paint...
D/C the cable from the throttle body and operate the cable back/forth to see if this is happening. If not, hose out the throttle body with spray cleaner. Its better to be dry that wet with oil that collects dust and dirt in the shaft bushing.
I had it happen and drove a different car under a p/u before I could kill it and shift out of gear...That left a noticable mark on the hood paint...
D/C the cable from the throttle body and operate the cable back/forth to see if this is happening. If not, hose out the throttle body with spray cleaner. Its better to be dry that wet with oil that collects dust and dirt in the shaft bushing.
Burning Brakes
Joined: Nov 2011
Posts: 841
Likes: 1
After this thread, I went out and inspected my TB a little more. Turns out that I have a little latteral play in the shaft
I'm pissed, GOD it's always something
I know from experience, that shaft should not move, oh well.........Here I go again
I'm pissed, GOD it's always something I know from experience, that shaft should not move, oh well.........Here I go again
Thread Starter
Team Owner
Joined: Mar 2012
Posts: 27,118
Likes: 135
From: Montgomery, Alabama
2017 C6 of Year Finalist
Thanks for all the replies. My problem is fixed. Stupid simple. 
When I checked the cables this morning I was concentrating on the one from the pedal to the ASR and only gave a quick look at the one from the ASR to the throttle body. While going over it this afternoon I discovered that the end of the cable at the throttle body had jumped out of the channel on the arm. After I put it back in everything is fine.
When I checked the cables this morning I was concentrating on the one from the pedal to the ASR and only gave a quick look at the one from the ASR to the throttle body. While going over it this afternoon I discovered that the end of the cable at the throttle body had jumped out of the channel on the arm. After I put it back in everything is fine.
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Le Mans Master
Joined: Aug 2007
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From: WV
Thanks for all the replies. My problem is fixed. Stupid simple.
When I checked the cables this morning I was concentrating on the one from the pedal to the ASR and only gave a quick look at the one from the ASR to the throttle body. While going over it this afternoon I discovered that the end of the cable at the throttle body had jumped out of the channel on the arm. After I put it back in everything is fine.
When I checked the cables this morning I was concentrating on the one from the pedal to the ASR and only gave a quick look at the one from the ASR to the throttle body. While going over it this afternoon I discovered that the end of the cable at the throttle body had jumped out of the channel on the arm. After I put it back in everything is fine.
...WW
Thread Starter
Team Owner
Joined: Mar 2012
Posts: 27,118
Likes: 135
From: Montgomery, Alabama
2017 C6 of Year Finalist
I have received some very good advice on other threads that I posted also. I pulled out the FSM and read these replies atleast twice before I went to start checking it. I hate overlooking the simple things.