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03-17-2013, 06:15 PM
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#1
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Throttle sticking wide open
Having issues with the throttle. It stuck wide open but the throttle plate is closed and the throttle cable is fine, cruise control is also switched off and the cruise control cable is functioning properly. Any ideas? The tps is new the only thing left is the iac.
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01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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03-17-2013, 07:04 PM
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#2
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
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Wait, how can it be stuck WOT, but the throttle plate is closed, how the **** does that even make sense.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-17-2013, 07:08 PM
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#3
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Exactly its acting like its wide open but the throttle plate is closed. I shut off the car, grabbed the cable at the throttle body, pulled it wide open and let it snap shut, turned the car back on and it immediately revved to the limiter. Its only after being wide open that it does this.
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01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
Last edited by B4C; 03-17-2013 at 07:12 PM.
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03-17-2013, 07:10 PM
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#4
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Join Date: Mar 2012
Location: Harrison NJ
Posts: 880
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how fast does it rev up to the rev limiter.
sorry i didnt coreectly read the op
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03-17-2013, 07:10 PM
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#5
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
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Is there a throttle body blade in it ...?
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-17-2013, 07:11 PM
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#6
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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It's revving to the limiter with the throttle blade shut? Or the blade didn't shut after grabbing the cable
__________________
So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
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03-17-2013, 07:13 PM
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#7
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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The blade is shut, but it still revs like its wide open. Only after its been wide open tho.
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01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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03-17-2013, 07:15 PM
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#8
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Join Date: Mar 2012
Location: Harrison NJ
Posts: 880
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Quote:
Originally Posted by B4C
The blade is shut, but it still revs like its wide open. Only after its been wide open tho.
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and youre manually closing that tb and its still going wot?
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03-17-2013, 07:15 PM
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#9
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Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
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If engine revs up to the moon w/throttle blade closed. Sounds like a huge vacuum leak, possibility the vacuum port at rear of intake snapped off or vacuum hose to brake booster popped off?
verify blade is actually attached.
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Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
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South Jersey Racecraft
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03-17-2013, 07:16 PM
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#10
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Join Date: Mar 2012
Location: Harrison NJ
Posts: 880
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Quote:
Originally Posted by S.J.SLEEPER
If engine revs up to the moon w/throttle blade closed. Sounds like a huge vacuum leak, possibility the vacuum port at rear of intake snapped off or vacuum hose to brake booster popped off?
verify blade is actually attached.
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yes but only after he revs.
if so it'd do that at startup
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03-17-2013, 07:19 PM
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#11
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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Careful with the nonsense
__________________
So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
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03-17-2013, 07:20 PM
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#12
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Quote:
Originally Posted by WSex
and youre manually closing that tb and its still going wot?
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Yes I did a run at atco and it was stuck wide open or seemed to be, I turned the car off, removed me floor mats and pumped the pedal, started it abck up and it did the same thing. I then got out of the car and popped the hood and grabbed the throttle cable and pulled it wide open and let it snap shut the car did the same when I started it again.
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01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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03-17-2013, 07:22 PM
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#13
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Join Date: Mar 2012
Location: Harrison NJ
Posts: 880
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okay can you have someone start the car while manually holding the throttle body shut.
not letting it snap
Last edited by WSex; 03-17-2013 at 07:23 PM.
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03-17-2013, 07:23 PM
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#14
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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The cruise would physically keep the blade open
__________________
So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
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03-17-2013, 07:24 PM
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#15
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Quote:
Originally Posted by WSex
okay can you have someone start the car while manually holding the throttle body shut.
not letting it snap
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If theres someone with me when it does it, its intermittent I cant duplicate the issue.
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01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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03-17-2013, 07:25 PM
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#16
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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Quote:
Originally Posted by B4C
If theres someone with me when it does it, its intermittent I cant duplicate the issue.
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Soo it won't happen unless you are alone?
__________________
So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
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03-17-2013, 07:25 PM
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#17
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Quote:
Originally Posted by Mike
The cruise would physically keep the blade open
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It was switched off at the stalk. I guess it could have malfunctioned, its either that or the IAC that could be the issue.
__________________
01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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03-17-2013, 07:26 PM
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#18
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Quote:
Originally Posted by Mike
Soo it won't happen unless you are alone?
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Its intermittent and I cannot duplicate it, it happend once before a few years ago with someone else in the car, I assumed it was the cruise control and have since leave it switched off when not in use. This time it happened at the track and I stopped at the end of the return lane.
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01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
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03-17-2013, 07:27 PM
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#19
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Join Date: Mar 2012
Location: Harrison NJ
Posts: 880
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Quote:
Originally Posted by B4C
It was switched off at the stalk. I guess it could have malfunctioned, its either that or the IAC that could be the issue.
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i had iac issues but never wot'd me
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03-17-2013, 07:27 PM
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#20
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Power Member/NJFBOA Bookie/Moderator
Join Date: Jun 2009
Location: North Jersey = Best Jersey.
Posts: 4,435
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Have you:
Quote:
Originally Posted by S.J.SLEEPER
verify blade is actually attached.
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If so, maybe it is a vacuum leak, like Curt says. Grab a can of carb cleaner and your prescription glasses and investigate.
Quote:
Originally Posted by S.J.SLEEPER
ISounds like a huge vacuum leak, possibility the vacuum port at rear of intake snapped off or vacuum hose to brake booster popped off?
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1995 Firebird... Stock-ish.
Quote:
Originally Posted by LS1ow
Good. He microwaved my phone 6 years ago, i hope his intake erupts.
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03-17-2013, 07:28 PM
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#21
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Join Date: May 2007
Location: Jim Thorpe PA
Posts: 2,132
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Quote:
Originally Posted by Jersey Mike
Have you:
If so, maybe it is a vacuum leak, like Curt says. Grab a can of carb cleaner and your prescription glasses and investigate.
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A vacuum leak only after a WOT pull? One that bad would do it as soon as I started the car, always.
__________________
01 SS 383 stroker, Magnum F, 9in.
86 Trans-Am 355 t56
Last edited by B4C; 03-17-2013 at 07:28 PM.
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03-17-2013, 07:28 PM
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#22
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
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If the blade is stuck shut and unconnected to the cable...it still hits WOT, how is this related to the cable, cruise control, the easter bunny etc?
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-17-2013, 07:29 PM
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#23
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Join Date: Mar 2012
Location: Harrison NJ
Posts: 880
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nope. can only be the little motor thingy majigger that opens the tb for cruise and closes tb when traction loss. its malfunctioning somehow.
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03-17-2013, 07:31 PM
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#24
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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He said he verified the throttle body was CLOSED while the car revved. The cruise box manipulates the blade. If it was cruise. The blade would open
__________________
So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
Last edited by Mike; 03-17-2013 at 07:32 PM.
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03-17-2013, 07:32 PM
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#25
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
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Quote:
Originally Posted by Mike
He said he verified the throttle body was CLOSED while the car revved. The cruise box manipulates the blade. If it was cruise. The blade would open
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Right, so, either a massive vac leak in TB blade, IAC somehow allowing enough air for WOT, or santa claus
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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