Skip the auto shop - Our mechanics make house calls

Q: Ignition problem and car won't start - 2002 Jeep Grand Cherokee

asked by on

Won't start sometimes after driving somewhere ....wait approx 10-30 min and it will start . Replaced relay ...same problem

My car has 180000 miles.
My car has an automatic transmission.

A: Hi there. I would need to know if, when it ...

Hi there. I would need to know if, when it will not start, the engine cranks over or you get nothing. If it will not even crank over, then most of the time this is caused by a failing starter. If it is failing, the heat from the engine running can cause it to bind until it cools again.

It can also be a bad positive battery cable that has a lot of internal resistance. I usually do a voltage test at the starter and work through the circuit from there until I find the problem. If the engine is cranking, then I usually test to see if it is lacking fuel or spark or both. It may be a fuel pump issue or a crank position sensor. I would use a scan tool first to check for codes and to see what the sensors are reading as that should identify the issue.

If you want to have this intermittent starting issue checked out, consider a professional mechanic, such as one from YourMechanic, who can come to your home or office to determine why the car is not starting.

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: Truck has little power accelerating and has a slight shake at idle

It is possible that you could be having and issue with your fuel injectors. The fuel delivery may be an issue here. I would recommend having a qualified professional use a high tech scan tool to determine if your fuel...

Q: Idle Failure - 1995 Jeep Grand Cherokee

This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected...

Q: Leak in the brake line

Hello. With brakes being one of the more important systems on a vehicle, the vehicle should not be driven until it's repaired. I assume you know approximately where the leak is since you are seeing the result of the leak....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...