Gas pedal sticking, High idle - gas pedal doesn't fully return |
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Gas pedal sticking, High idle - gas pedal doesn't fully return |
tsvo |
May 21 2023, 05:42 AM
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#1
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Member Group: Members Posts: 123 Joined: 30-January 16 From: Chicago Member No.: 19,616 Region Association: Upper MidWest |
Hello, I noticed my car was idling high. When I take my foot off the pedal, it does not return back to the top. It stays depressed just a little bit. I can use my foot to move it to the start position and the idle of course drops. It does not seem like there is any interference from carpet or floor mat. Any thoughts are greatly appreciated.
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914Sixer |
May 21 2023, 05:57 AM
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#2
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914 Guru Group: Members Posts: 8,882 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
Sounds like your cables are wrapped around each other at or in tunnel.
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brant |
May 21 2023, 06:10 AM
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#3
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Is it a djet car?
If so I’m guessing worn throttle body butterfly that sticks They get sticky when worn out And rebuild with new bushings and new butterfly plate returns things to the way they should be |
jim_hoyland |
May 21 2023, 06:12 AM
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#4
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Get that VIN ? Group: Members Posts: 9,297 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
I've had the same problem over the years, The first time, it was a result of an uneven bend in the throttle cable as it passes out of the firewall , over the motor, then to the throttle body. The cable requires a smooth arc; no sharp turns.
The other cause was a slightly sticky thottle body mechanism I spray the moving parts with a silicon lubricant and manually move the TB arm several time.I still do that 2 -3 times a year. There other causes, but those were the two Im familiar with |
StarBear |
May 21 2023, 06:24 AM
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#5
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Senior Member Group: Members Posts: 1,884 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States |
Happened to me several years ago. It was a bushing in the pedal cluster that got bunked up and swollen. Same foot effort to pull the pedal back up.
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Cairo94507 |
May 21 2023, 07:11 AM
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#6
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Michael Group: Members Posts: 9,759 Joined: 1-November 08 From: Auburn, CA Member No.: 9,712 Region Association: Northern California |
I too had a sticking throttle; turned out to be an incorrect clutch pivot arm on the pedal cluster. I had a 911 arm on my cluster instead of the correct 914-6 arm designed for the hand throttle. Somehow during the pedal cluster restoration it got swapped. Once identified we swapped it out and problem solved. (IMG:style_emoticons/default/beerchug.gif)
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peteinjp |
May 22 2023, 09:59 PM
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#7
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Member Group: Members Posts: 201 Joined: 15-July 21 From: Japan Member No.: 25,723 Region Association: None |
Just went though this with my MFI 6. I separated all the linkages and checked each pivot etc individually. In my case the arm that goes from the bell crank at the rear of the transaxle though the engine tin was rubbing a bit. It was also too long. A little bending and better than ever. Greased everything while I was in there so good for the long haul now. That said I do feel the cable the cable itself could be smoother...
Pete |
VaccaRabite |
May 23 2023, 06:04 AM
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#8
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En Garde! Group: Admin Posts: 13,444 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
If your car has carbs, your throttle link could also be binding.
You could have gunk built up at any of the points where the cable goes into the sheath. You could have wires from the throttle cable coming loose and snagging the sheath. You could be wrapped around the clutch. Your throttle return spring my have come loose, or gotten weaker, and you need a second throttle return spring (common with carbs). Lots and lots of potential reasons. Get back there and start looking! Zach |
dr914@autoatlanta.com |
May 23 2023, 08:27 AM
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#9
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914 Guru Group: Members Posts: 7,858 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
Bad accelerator cable
bad hinge inside acc pedal pedal cluster bushings bad return spring missing at throttle body accelerator cable misrouted (could be interfering with clutch cable or kinked accelerator cable getting hot because it is being used as a ground due to bad grounds all covered in the book 914 "tech tips 700" Hello, I noticed my car was idling high. When I take my foot off the pedal, it does not return back to the top. It stays depressed just a little bit. I can use my foot to move it to the start position and the idle of course drops. It does not seem like there is any interference from carpet or floor mat. Any thoughts are greatly appreciated. |
Dave_Darling |
May 23 2023, 12:52 PM
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#10
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Isolate the problem. Unhook the throttle cable from the throttle body. Does the idle still stick? If so, the problem is in the throttle body. Clean it and carefully inspect the throttle shaft and where it goes through the throttle body.
If that isn't the issue, then hook up the cable to the throttle body and unhook it from the pedal. Does the pedal move freely and return all the way? If not, the pedal pivot is likely rusted. Pull on the throttle cable. Does it return all the way? If not, there is an issue with the cable. Check the routing (especially up in the front of the center tunnel) and condition of the cable. --DD |
Dlee6205 |
May 23 2023, 01:16 PM
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#11
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Newbie Group: Members Posts: 45 Joined: 9-December 22 From: Burnsville, NC Member No.: 27,017 Region Association: South East States |
Isolate the problem. Unhook the throttle cable from the throttle body. Does the idle still stick? --DD (IMG:style_emoticons/default/agree.gif) Good advice. This is where I would start. |
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