Sticking Gas Pedal - Cadillac Forum - Enthusiast forums for Cadillac Owners

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Old 06-08-2010, 05:18 PM
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Join Date: Mar 2009
Location: Buckinghamshire, UK
Posts: 62
Default Sticking Gas Pedal


Ref.: 1999 Seville STS

The last few days I have noticed that after using the car and parking up for bit, when I re-start the car the gas pedal seems to stick/be very stiff. Once depressed it seems to revert back to normal.

However, just yesterday it was stuck hard, so hard I thought something must be lodged under the pedal and stopping it move. I had to stamp on the pedal to release it (only done this the once).

I had the car serviced last week and everything was fine, they lubricated the accelerator mechanism in the engine bay and checked for frayed cables but everything was ok.

Anyone else encountered this problem?


Olney, UK
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Old 06-08-2010, 08:42 PM
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Join Date: Oct 2007
Location: in the mitten
Posts: 3,152

Carbon build up on throttle plate/body, most likely cause.
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Old 06-09-2010, 10:52 AM
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Join Date: Apr 2009
Location: Seattle Area
Posts: 108
Default Cleaning Throttle Body

The throttle body is easy to clean with a clean shop towel, toothbrush, and carburetor tune-up conditioner. Put some weight on the gas pedal to open the throttle full.

Do not use a solvent containing MEK because it will ruin the plenum and intake seals.
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Old 06-09-2010, 05:57 PM
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Join Date: Mar 2009
Location: Buckinghamshire, UK
Posts: 62

Thanks guys will check it out...
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