Skip the auto shop - Our mechanics make house calls

Q: Turn key to start long start time occasionally changed fuel pump still hesitate to start

asked by on

My car start occasionally hesitate to start changed fuel pump

My car has 143354 miles.
My car has an automatic transmission.

A: Hello. Your no start condition can be cause...

Hello. Your no start condition can be caused by a number of things. If you changed out the fuel pump I am assuming that the engine cranks over fine, but it just won't start at times. From my experience with this vehicle it is usually a bad crank position sensor or a bad shut down relay.

I typically install a scan too and watch the crank sensor signal when this occurs. If it is not there then I replace the sensor. If it is, then I check the shut down relay to see if it is functioning and receiving power. If it is not, then it may need to be replaced. If both of those are fine it may be a bad ignition switch, or even a computer failure, which I have seen a few times. If you need to have this diagnosed, consider YourMechanic, to have a certified mechanic come to your home or office to diagnose why your car is hard to start.

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: Car rattling and smoking

I recommend inspecting the shifting cable. It is a possibility the shifting cable has failed. I would also recommend inspecting the timing belt. The timing belt could be the cause of the rattling noise. The repair is difficult, I would...

Q: Silencer disconnected

Hi. This problem could be from a loose or broken connection on the exhaust. If all appears to be in good condition, you can have someone cover the exhaust tip with some rags, and listen under the car for the...

Q: Windshield wipers keep going

The windshield wiper motor has a parking circuit that will cause the motor to park home, and the wiper blades to shut off, when you turn off the wipers at the switch. If a problem is encountered where the wiper...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.