Gas Pedal Problem

bryanf89 · 11-26-2009, 03:24 AM

I have an 89 supra thats in fairly good condition. i find that the gas pedal is to close to the floor and doesnt allow wide open throttle. my mechanic sed it was fine but im used to the gas pedal being about the same level with the brake pedal. Is this normal in a supra and if not what can i do to adjust it?

MA70-3.0GT · 11-26-2009, 02:00 PM

Can you lift the pedal up by hand at all? If you can move it a fair way then you probably have too much slack it the throttle cable, this is fairly simple to fix. Just unhook the clip where the cable outer secures to the stop under the bonnet, remove the slack (leaving a couple of mm to ensure the throttle can still close fully) and reinsert the clip into the appropriate groove.

If you can't fix it by adjusting then most likely the cable is damaged or wrong for your car & should be replaced.

bryanf89 · 11-26-2009, 02:57 PM

No i cant move it up only down. The gas pedal itself has some free play but my mechanic said thats because theres a spring located behind it and thats normal with powerful. But i work in a parking lot and every fast car i drove doesnt have that. The metal piece that connects to the pedal has left a mark on the carpet indicating to me that it to close to the floor. Any other suggestions?

cre · 11-26-2009, 07:08 PM

The pedals do not line up; it was like that from the factory. The only reason any of the pedals would be even closer to the ground is if the arm is bent. I believe there is approxamately a 1/2" offset between the gas and brake pedals.

If it isn't bent and you floor it and the throttle plate doesn't open 100% then you may need to remove slack from the throttle cable (there is supposed to be a little, but not much) or you may need to adjust the linkage which mounts between it and the throttle body.

bryanf89 · 11-26-2009, 08:43 PM

Thank you. This has really been helpful. All in all even with a lil tap on the pedal the car moves! I bought the car completly stock. Im working on restoring the car then looking into performance. I want to leave the body and interior untouched for that classic look.

11-26-2009, 03:24 AM	#1
bryanf89 3" Exhaust Join Date: Nov 2009 Location: NYC Posts: 231	Gas Pedal Problem I have an 89 supra thats in fairly good condition. i find that the gas pedal is to close to the floor and doesnt allow wide open throttle. my mechanic sed it was fine but im used to the gas pedal being about the same level with the brake pedal. Is this normal in a supra and if not what can i do to adjust it?

11-26-2009, 02:00 PM	#2
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Can you lift the pedal up by hand at all? If you can move it a fair way then you probably have too much slack it the throttle cable, this is fairly simple to fix. Just unhook the clip where the cable outer secures to the stop under the bonnet, remove the slack (leaving a couple of mm to ensure the throttle can still close fully) and reinsert the clip into the appropriate groove. If you can't fix it by adjusting then most likely the cable is damaged or wrong for your car & should be replaced. __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

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11-26-2009, 02:57 PM	#3
bryanf89 3" Exhaust Join Date: Nov 2009 Location: NYC Posts: 231	No i cant move it up only down. The gas pedal itself has some free play but my mechanic said thats because theres a spring located behind it and thats normal with powerful. But i work in a parking lot and every fast car i drove doesnt have that. The metal piece that connects to the pedal has left a mark on the carpet indicating to me that it to close to the floor. Any other suggestions?

11-26-2009, 07:08 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The pedals do not line up; it was like that from the factory. The only reason any of the pedals would be even closer to the ground is if the arm is bent. I believe there is approxamately a 1/2" offset between the gas and brake pedals. If it isn't bent and you floor it and the throttle plate doesn't open 100% then you may need to remove slack from the throttle cable (there is supposed to be a little, but not much) or you may need to adjust the linkage which mounts between it and the throttle body.

11-26-2009, 08:43 PM	#5
bryanf89 3" Exhaust Join Date: Nov 2009 Location: NYC Posts: 231	Thank you. This has really been helpful. All in all even with a lil tap on the pedal the car moves! I bought the car completly stock. Im working on restoring the car then looking into performance. I want to leave the body and interior untouched for that classic look.