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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Starts and stalls, it will idle for maybe 10 sec. and starts

Customer Question

starts and stalls
JA: Is the check engine light on? Does the car stall at idle or when driving?
Customer: it will idle for maybe 10 sec. and starts to stumble then stalls
JA: What is the model of your '10 Chevy?
Customer: 1999 corvette
JA: Are you fixing your Corvette yourself? What have you tried so far?
Customer: it had code for a map sensor and one for crankshaft sensor i erased them the map came back so i replaced it and it does the same thing
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 2 months ago.
Category: Chevy
Customer: replied 2 months ago.
It starts and idle strong but when i but my foot on gas pedal it bogs and starts to stumble like its running out of fuel i hooked up scanner and it had a po336 and it had a map code i erased them map code came back so i figured it was a hard code well i replaced it same thing
Expert:  TECHPRO49 replied 2 months ago.

Hello my name is ***** ***** I will be assisting you with all of your vehicle questions today. Give me one moment while I review your question and come back with a answer. Please be aware I do not know your skill level or abilities so I will be asking a lot of questions and in a lot of cases we will respond to each other quite a lot before we find a solution. As far as phone calls are concerned that is the system prompting you, not me, and they do cost more money, I prefer text but in some cases a phone call is required.

Expert:  TECHPRO49 replied 2 months ago.

what was the actually # code for that ?

Expert:  TECHPRO49 replied 2 months ago.

oh nevermind I see it in the next text

Expert:  TECHPRO49 replied 2 months ago.

so the map code is back and stays on?

Customer: replied 2 months ago.
Po336,po108 also im a tech
Customer: replied 2 months ago.
It came back i replaced it now it doesn't have any codes but still the same problem
Expert:  TECHPRO49 replied 2 months ago.

because of the 336 and the continuing condition I would scope out the crankshaft sensor and see what the wave looks like and ohm it out as well for faults

Customer: replied 2 months ago.
I'm wondering if the crankshaft sensor would cause that problem cause it starts just stalls
Expert:  TECHPRO49 replied 2 months ago.

it would for sure, do you have the troubleshooting breakdown for that and spec numbers?

Customer: replied 2 months ago.
it doesn't run long enough to do much i was wondering was the pump falling out
Customer: replied 2 months ago.
i know how to check the sensor
Expert:  TECHPRO49 replied 2 months ago.

that could also be a issue, but we have to start somewhere, after the crank thats the next thing I would check

Customer: replied 2 months ago.
i would of thought that if the crankshaft sensor had a problem it would have threw the code again
Expert:  TECHPRO49 replied 2 months ago.

depending on the severity of the fault it may have been working under the set parameters of the sensor and not able to throw the code but I bet if you crank on it all night it will come back up