Skip the auto shop - Our mechanics make house calls

Q: Won't start auxilary power

asked by on

My check engine light came on a while ago. And my car periodically stalls - mostly when it rains. One time when I was using auxiliary power there was a clicking noise, and then the power went off. Then it came back on. But now the car won’t start at all. It won’t turn over when trying to start it. I never had a problem with the starter and my battery is in great shape. Do you have any idea what's wrong? How can this be fixed?

A: Hello. There are several possibilities for ...

Hello. There are several possibilities for what is causing the problem that you are having. There could be a problem with the camshaft sensor or crankshaft sensor. These sensors read the position of the camshaft and crankshaft in order to communicate with the powertrain control module (PCM) about proper engine timing. If they are not working properly, the PCM won’t know the proper engine timing and this may prevent the car from starting.

It is also possible that there is a problem with the coolant temperature sensor. If the coolant temperature sensor is giving a false reading this may cause the PCM to give the wrong amount of fuel at startup or when the car is running. This may prevent the car from starting or create a stalling condition.

I would recommend that you start by having the Check Engine Light checked a certified technician, like one from YourMechanic, who can pinpoint the problem and make the necessary repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Hooked up battery backwards everything works but engine won't crank

i am working on this

Q: Car runs well, but shuts off after 15 minutes

When it next fails, listen for the fuel pump. If it isn't running, get your multimeter and follow the electrical power path for the fuel pump: fuses, fuel pump relay, wiring to the pump. Check for voltage on that circuit...

Q: Missing transmission part

Hello and thank you for contacting YourMechanic. There could be a park neutral position (PNP) switch missing from the transmission. There could also be a gear inspection cover missing on the transmission. Look at what part of the transmission is...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.