It's stalling in the cold. Started stalling at before 50 ...
Responses
Mike V.
232 days ago
Hi, my name is\*\*\*\*\*’ve been a technician on Just Answer since 2007 and I'll be helping you today. I'm sorry to hear you are having difficulties with your vehicle. I know how inconvenient car trouble is, but together, we will get your vehicle back up and running quickly.
May I ask whom I am chatting with today?
Customer
232 days ago
Victoria
Mike V.
232 days ago
Hi Victoria, it's nice to meet you.
It sounds like you have a bad mass airflow sensor. This sensor helps the computer regulate the fuel mixture based on the amount of air coming into the system and the temp of that air.
Since you have a P0171 code, that points to a lean fuel mixture, so if the computer isn't getting the right info from the maf sensor, you will get that code and if the mixture isn't rich enough when the air is cold, the car will have issues running until it's warmed up.
Customer
232 days ago
Thank you!
Mike V.
232 days ago
You're very welcome.
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It's stalling in the cold. Started stalling at before 50 degrees F. Now it's stalling if the temp even gets below 70. It's also throwing a 171 lean code when this started. Idles rough when cold and the stabilitrak service light is...
It's stalling in the cold. Started stalling at before 50 degrees F. Now it's stalling if the temp even gets below 70. It's also throwing a 171 lean code when this started. Idles rough when cold and the stabilitrak service light is coming on with a check [engine](/topics-engine-chevy/) light when it tries to stall. Giving it a little gas keeps it from stalling out. I also think I smell a bit of burning plastic under the hood but I can't tell from where and I don't see anything. When it's above 70 it idles and runs great. Mechanic's Assistant: Does the light stay on, or does it blink? It stays on until the temp warms up and then both lights go off and the code goes away Mechanic's Assistant: What is the make/model/year of your car? 2018 chevy sonic Mechanic's Assistant: Are you fixing your Sonic yourself? What have you tried so far? It depends on what it is. I took it to the dealership but it wasn't throwing a code so I didn't want a big bill for nothing. They told me to wait and see.