 Throttle body supplemental spring / stiff gas pedal |
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| sfrenck |
 Dec 5 2010, 07:00 PM
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Member  Group: Members Posts: 492 Joined: 28-February 10 From: Wilmington, DE Member No.: 11,411 Region Association: MidAtlantic Region 
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Just started driving my "project" ('73 2.0L with 74' F.I. setup) up and down the block for my preliminary road test. One thing I noticed, and my 79 yr. old father really noticed, was the gas pedal was very stiff.
I have already replaced the plastic bushings in the pedal cluster with the brass rebuild kit. Tonight, I disconnected the throttle cable from the throttle body and confirmed the cable / pedal was not the issue. It seems that the supplemental spring on the throttle body is the culprit. Is there a different, easier spring that I can install or is a stiff gas pedal just part of the normal Porsche engineering? Or, should I look for a '73 throttle body without the supplemental spring? Thanks - Scott |
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Posts in this topic
sfrenck Throttle body supplemental spring / stiff gas pedal Dec 5 2010, 07:00 PM
1988Hawk
Just started driving my "project" (... Dec 5 2010, 07:10 PM
sfrenck
Just started driving my "project" (... Dec 5 2010, 08:08 PM okieflyr
[quote name='1988Hawk' post='1402366' date='Dec 5... Dec 5 2010, 08:55 PM Mikey914 There is a steel piano hinge in the OEM pedal that... Dec 5 2010, 09:21 PM sfrenck Not anything to do with the pedal cluster... actio... Dec 6 2010, 07:40 AM benalishhero When you move the TB, with the cable disconnected,... Dec 6 2010, 10:30 AM sfrenck TB movement is smooth with and without the cable a... Dec 6 2010, 01:25 PM Drums66 ...Sometimes the bushing's in the TB
wear out?... Dec 6 2010, 04:55 PM pete000 I am in this same boat. I am replacing the cable, ... Dec 6 2010, 05:05 PM SLITS Most any FLAPS will have throttle return springs. ... Dec 6 2010, 06:44 PM sfrenck Just to make sure that I'm asking about what e... Dec 6 2010, 07:20 PM okieflyr If the the throttle body is lubed and smooth as we... Dec 6 2010, 07:53 PM SLITS The spring you are showing was not called the ... Dec 6 2010, 09:01 PM sfrenck Well, I poached this image from PP and they list #... Dec 6 2010, 09:40 PM SLITS Probably a bit stiffer than modern day cars, but t... Dec 6 2010, 09:52 PM championgt1 It should not be that stiff. Maybe a little stiffe... Dec 6 2010, 10:14 PM vsg914 Isn't it amazing that most everyone misread yo... Dec 7 2010, 06:27 AM Gint Just because the cable moves freely when disconnec... Dec 7 2010, 06:41 AM sfrenck Well, I do have a spare throttle cable to replace ... Dec 7 2010, 01:55 PM geniusanthony Perhaps the spring was wound an extra turn tighter... Dec 7 2010, 03:35 PM r_towle the cable also comes into contact with the coil if... Dec 7 2010, 04:15 PM sfrenck Well... started with what I thought was the easies... Dec 7 2010, 04:28 PM realred914
Well... started with what I thought was the easie... Dec 7 2010, 04:32 PM sfrenck OK - TPS "bumper" fixed. Back to the in... Dec 7 2010, 06:10 PM r_towle initial pedal resistance goes back to the throttle... Dec 7 2010, 06:26 PM sfrenck It flops freely when it's down to just the fla... Dec 7 2010, 06:55 PM r_towle well, the supplemental spring does not always exis... Dec 7 2010, 07:08 PM sfrenck Cleaned TB back in car and hooked up. The action ... Dec 8 2010, 01:03 PM r_towle Set it like the pic below when closed.
If you look... Dec 8 2010, 10:52 PM  |
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