Loses throttle randomly

BENNYTARLTON

MEMBER
2008 CHRYSLER 300
5.7L
V8
4WD
AUTOMATIC
250,000 MILES

When I'm driving my cars throttle sometimes randomly shut down. The power in the car is fine when it does that it's just that. I replaced my pedal sensor throttle body and pcm. I cannot figure this out. Sometimes I have to hold my pedal down 3 seconds then it starts moving slowly and I can get to 60 moh in about 35 seconds.

Monday, November 18th, 2019 AT 11:39 AM

5 Replies

KASEKENNY

MECHANIC
18,907 POSTS

We need to start with what codes you have. More than likely you have an APP sensor issue but if you have codes that will point us in the correct direction.

Let's check codes and go from there. Thanks

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Monday, November 18th, 2019 AT 6:51 PM

BENNYTARLTON

MEMBER
4 POSTS

Yes p2122, p2127, p2138.

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Tuesday, November 19th, 2019 AT 1:37 PM

BENNYTARLTON

MEMBER
4 POSTS

Also p0688. Sorry

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Tuesday, November 19th, 2019 AT 1:38 PM

BENNYTARLTON

MEMBER
4 POSTS

And I did replace the app sensor and whole pedal that was with it.

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Tuesday, November 19th, 2019 AT 1:48 PM

KASEKENNY

MECHANIC
18,907 POSTS

P0688 - ASD Main Sense circuit
P2122 - APP Sensor 1 circuit low
P2127 - APP Sensor 2 Circuit Low
P2138 - APP 1 and 2 Correlation

Okay. You more than likely have a wiring issue. I would take either the APP 1 code and run through it or the P2138 and I am sure you will find the issue. It could be the PCM but again, if it is wiring then you will not fix it with a PCM.

I attached the code detail for these codes. Again, run through the p2122 or the P2138 and I am sure you will find the issue for all of them except for possibly the P0688.

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