Restricted gas pedal movement on 1988 Spider - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 6 (permalink) Old 08-14-2017, 07:57 AM Thread Starter
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Restricted gas pedal movement on 1988 Spider

Throttle pedal doesn't function smoothly, but it works fine from the throttle linkage under the hood.
Guessing I need to replace throttle grommets on firewall (one on each side), do you guys agree? If so, what's the best way to replace them?
Many thanks
Mario
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post #2 of 6 (permalink) Old 08-14-2017, 09:19 AM
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I had a binding throttle pedal in our '84 Spider (same throttle linkage as your '88). Turns out it was the bell crank under the intake plenum.

The photo was taken by holding my camera down near the distributor looking back under the intake plenum.
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- - Eric
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
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post #3 of 6 (permalink) Old 08-14-2017, 09:26 AM
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Here's a picture (swiped from the BB) showing the underside of the plenum & how the bell crank is attached.
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- - Eric
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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post #4 of 6 (permalink) Old 08-14-2017, 10:37 AM Thread Starter
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Thanks Eric. I don't have any problems when I pull up the throttle linkage under the plenum. Was Your experience the same?
The grommet seems out of shape/place and has tiny cracks! Any ideas of how to replace them?
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post #5 of 6 (permalink) Old 08-14-2017, 12:08 PM
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Anything here help? http://www.alfabb.com/bb/forums/spid...g-removal.html

- - Eric
don't read this
~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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post #6 of 6 (permalink) Old 08-14-2017, 01:48 PM
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First, make sure carpet isn't getting in way. That causes problems. 2nd spray triflow on the rubber grommets on firewall before you replace them. They bind and get a little sticky. Get in there good. 3rd lube the little plastic connectors that the throttle rods connect to all the way up to the throttle body on intake. 3rd lube with triflow the spring under the plenum, and the spring that opposes throttle linkage. Finally, if little plastic connectors are broken, buy the newer metal replacement ends from Centerline or other vendors. Lubing and moving carpet solved all of my problems.


1987 S3 Spider Quad 81k miles- California car- no rust - always garaged - everything works!, until it doesn't.......
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