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

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Active Body Control problem

Hi. It sounds like there was a small leak in the system that has turned into a bigger one, and now the system can't hold any pressure at all. Typically, there will be puddles of hydraulic fluid leaking from the...

Q: Is the rotor part of the hub assembly if not what is the difference between the hub and rotor

Hi there. The rotor is the metal disc that the brake pads use to stop the vehicle. The pads are pressed against the rotor with great hydraulic force thus squeezing the rotor. The friction of the pads against this surface...

Q: Noise at front of car

First we’ll have to determine if it is a brake, suspension, or engine noise. Worn brake pads have indicators that squeak when the pads are worn. It will change when you apply the brake. Suspension noises are usually when hitting...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.