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.

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
  1. Home
  2. Questions
  3. Ignition problem and car won't start - 2002 Jeep Grand Cherokee

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: will a water pump fail without the temperature light showing?

When a water pump fails, it usually fails by seizing up. It is possible for a water pump to seize up without having any warning lights illuminated. Many times the water pump will make a noise because the bully is...

Q: I am attempting to install a Viper 4105V remote start system

Most of the time these ant theft systems are generic in nature and do not give a good identified wire diagram to work on any vehicle. With the advent of computer control lighting and lock modules on vehicles made within...

Q: Car overheating even after changing thermostat

Hello. It is possible that the radiator needs to be replaced. Sometimes, flushing out the radiator will solve a problem like this, but when it doesn’t, replacing the radiator is necessary. It may also be possible that your car...

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 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.
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.