C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Throttle stuck

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Old Nov 22, 2017 | 01:37 PM
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Default Throttle stuck

Hello out there!
Scariest thing yesterday. The throttle on my 94 stock C4 stuck at around 50 MPH going around a curve trying to slow down for an upcoming stop light. Put it in neutral and it was revving at around 4 grand. Hit the gas pedal and pumped the brakes and it calmed down and didn't happen again for the short ride home. Worried about when the wife drives it and this happens again. Question: where should I start looking for culprits? Owned this car for about 6 months and this is the first time this happened.
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Old Nov 22, 2017 | 02:08 PM
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Sounds like the throttle body got stuck. Pretty common and pretty easy to fix.

You will need to clean out your throttle body and make sure that the buttery moves freely.Also check your return spring, it could have gotten out of alignment.
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Old Nov 22, 2017 | 02:31 PM
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Originally Posted by billschroeder5842
Sounds like the throttle body got stuck. Pretty common and pretty easy to fix.

You will need to clean out your throttle body and make sure that the buttery moves freely.Also check your return spring, it could have gotten out of alignment.
Thanks Bill will check it out this weekend!
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Old Nov 22, 2017 | 02:35 PM
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Check the cables both ASR and throttle, be sure your floor mat is not interfering. When checking the return assembly be sure the cables are in there respective tracks (groves)

How many miles? check for play in the throttle plate rod bearings.

one more thing check the TPS switch

Last edited by FASTAZU; Nov 22, 2017 at 02:37 PM.
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Old Nov 22, 2017 | 03:04 PM
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Originally Posted by We Gone


Check the cables both ASR and throttle, be sure your floor mat is not interfering. When checking the return assembly be sure the cables are in there respective tracks (groves)

How many miles? check for play in the throttle plate rod bearings.

one more thing check the TPS switch
Thanks We Gone...what and where is the TPS?
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Old Nov 22, 2017 | 03:44 PM
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Originally Posted by Foamy99
Thanks We Gone...what and where is the TPS?
TPS = Throttle Position Sensor

It is on the throttle body.
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