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Gas pedal --- How to make more smooth?

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Old 03-30-12 | 07:57 PM
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TurboMazdaSpeed's Avatar
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Gas pedal --- How to make more smooth?

On my 1991 S5 T2 I dont like the feeling of the gas pedal, feels a tad sloppy so to say, almost like its a tiny bit loose, but on FC's that ive owned they usually feel the same, semi sloppy till halfway then stiff.

My FD on the other hand, pedal is 100% Tight and smooth the whole push, no slack, which gives me way better throttle response, Half of this problem im guessing is because the S5 throttle cable is so ridiculously long, What can i do to make it feel more like my FD's pedal? What ways are there to adjust the stiffness and play?

Thanks!
Old 03-30-12 | 09:06 PM
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Adjust the play in the throttle cable. Pop off the IC and there and two nuts that jam together over a bushing. Loosen them and take out the play, if you take out too much your idle will go up.
It's explained in the FSM, a link can be found in the FAQ.
Old 03-30-12 | 09:50 PM
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Originally Posted by TurboMazdaSpeed

My FD pedal is 100% Tight and smooth the whole push, no slack, which gives me way better throttle response, Half of this problem im guessing is because the S5 throttle cable is so ridiculously long...
Just as in brake lines, it ain't the length that matters it's what happens at the ends.
Throttle cable length is not your problem (assuming the routing is gentle).

Remove the cable, hang from one end and drizzle a good lube (I like TriFlow) from the top till it drips from the bottom.
Reverse ends, repeat...let hang till excess lube drips out.

While the cable is out check the pedal's motion, lube/adjust as necessary.
Similarly, rotate the throttle cam through it's range, make sure there's no binding.

Reinstall cable, adjust freeplay and hope you like it cause what you got is what you got.
Old 03-31-12 | 12:43 AM
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TurboMazdaSpeed's Avatar
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Motor has no top mount so the tightening will be easy

Good idea clokker!

Thanks for the advice guys.. Will try both of those, im sure it will fix my problem

Cheers
Old 03-31-12 | 08:20 AM
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That's just the way the pedal is. If you just touch it with your hands, you will see it's somewhat floppy and has some play in it, regardless of the cable. It was probably much better when the cars were new 20+ years ago.
Old 04-03-12 | 09:05 PM
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Switching to an n/a throttle cable will improve the pedal feel by 100%
Old 04-03-12 | 09:33 PM
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TurboMazdaSpeed's Avatar
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Originally Posted by sharingan 19
Switching to an n/a throttle cable will improve the pedal feel by 100%
Hmm interesting. Ill give that a shot.

It does seem smoother since i lubed it up and tightened some stuff up.. Will see when i drive it though
Old 04-04-12 | 09:30 AM
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You could also check that the cable is not flopping lose in the engine bay.
Old 04-04-12 | 10:35 PM
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something I noticed too. Could be the spring is just that much tighter on the FD TB or the way it is routed. I thought the FD was stiff stiff IMO and the FC felt better.
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