Skip the auto shop - Our mechanics make house calls

Q: Car was cutting off at random, now it won't start.

asked by on

I was having a problem with my car cutting off at random times, but would re-start. Well the other day I was sitting in my car on lunch break, and it cuts off on me and wouldn't re-start. I was suggested to replace my fuel pump, which needed to be done since my car was hydro locked which is what the last shop said and i had alot of work done to it, and for some reason they didnt replace the fuel pump. well after replacing the fuel pump, same results it will turn over but will not start. Now i will be replacing my ignition coil, it does look old and worn. also i did have auto zone read my codes, they are p0420 p0108 p0401. Any suggestions?

My car has 182916 miles.

A: Hi there. It sounds like there is a possibi...

Hi there. It sounds like there is a possibility of a fault with the MAP sensor system for the P0108 code, an EGR fault for the P0401, and a catalytic converter fault for the P0420 code.

Your concern could be a combination of the MAP sensor fault and a possible idle air control valve failing. If there is a short or open circuit, vacuum leak, or damage to either of these components then the engine idle could be affected.

The ignition coil may look old, but still be properly functioning and replacement will still have you at square one. I strongly suggest acquiring a qualified technician to perform an inspection to avoid replacing unnecessary parts. YourMechanic has several available technicians that can assist you with a Check Engine Light inspection, a car does not start inspection, and provide an estimate and direction of 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

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: I have a 2000 Ford Taurus. A couple weeks ago I was driving and I lost all electrical power to it. Now it will run but very badly.

Hi there. From the description you have given, your vehicle loss of electrical power could be a faulty ignition switch. It could also be, a poor ground pigtail at the negative battery terminal. The combination of inoperative electrical components leads...

Q: My car has been driving funny. When I pull off it hesitates..like it doesn't have enough power.

It may be your TPS like your father said, but tests would need to be done to diagnose it. If you have codes in the computer it would help with the diagnosis. The TPS is not a common problem with...

Q: Car idles rough when in gear

Hello. If the idle is that low, then it can be caused by a number of things. Most of the time it is caused by a vacuum leak or a dirty throttle body. The throttle body being the most common....

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.