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BeckyD @ James Martin Chevy


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Old 10-18-2021, 01:52 AM   #1
savagecamaro
 
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Drives: 2017 Camaro 2ss
Join Date: Oct 2017
Location: Central California
Posts: 124
Car Redlines in Park and Neutral by itself

I did a little pull on the highway. After I did my pull
I noticed the car was accelerating by itself. I took it from D to M and dropped gears and did nothing. Switched it to Neutral and immediately redline. Got off the highway and when I came to a stop it was like I was at the track at my car wanted to launch from a dead stop. My foot was off the gas the entire time. Now when I start the car it shuts off as soon as it starts. The only codes I'm getting right now is U0101 and P0449.
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Old 10-18-2021, 07:30 AM   #2
SnowWhiteSS
 
Drives: 2017 Camaro SS
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take the intake off to look at the throttle body and see if its stuck open for some reason. or it could be a major vacuum leak somewhere. Do you have any mods done?
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Old 10-18-2021, 07:36 AM   #3
JKSully
 
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Drives: 22 Camaro 2SS, 20 Subaru Crosstrek
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Since these are throttle by wire, it could be an issue with the sender or receiver. Disconnecting the battery for 10 minutes seems to work for other electrical gremlins, maybe try that and see? It's a no-cost solution, at least, so worth a try.
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Old 10-18-2021, 12:35 PM   #4
savagecamaro
 
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Drives: 2017 Camaro 2ss
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Location: Central California
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Cleaned the Throttle Body. Looked fine, just some regular build up.
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Old 10-19-2021, 08:25 PM   #5
SnowWhiteSS
 
Drives: 2017 Camaro SS
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Location: Waldorf, MD
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Hook a code reader up to it and look at the pedal commanded position and actual pedal position. It should be under live data. I think idle is like 14% or so. Shouldn’t be anything over 20.
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Old 10-20-2021, 08:19 AM   #6
Zone5
 
Drives: Camaro ZL1, Dodge TRX
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Sounds stupid, but it happened to me, make sure your floor-mat, or an obstruction, isn't resting on the accelerator pedal.
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Old 10-24-2021, 03:13 AM   #7
savagecamaro
 
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Drives: 2017 Camaro 2ss
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Location: Central California
Posts: 124
Switched out the MAF sensor. It stopped idling rough. I still have the P0101 code. People in the camaro Facebook group saying it's most likely the throttle body sensor. Will try replacing the throttle body
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