Skip the auto shop - Our mechanics make house calls

Q: All of a sudden it dies while driving?

asked by on

I have a 1999 Jeep Grand Cherokee and all of a sudden it dies. It didn't show that it was overheating. I just recently dropped the oil pan and put all new oil. I'm always needing to fill my coolant. I had a little under 1/2 a tank of gas. With all that to say, I had been working under the hood trying to find out why it won't start. It sounded like it wanted to, but just wouldn't turn over. By this time it's been 30 minutes or more and it finally starts. I get home and hook up my codes reader and when I first plug it in, the first time this has happened my codes reader beeps three times twice and says that I have zero codes?!? This leaves me pretty confused considering what just happened. Any chance you could help me understand what's wrong? Please and thank you.

My car has 212369 miles.
My car has an automatic transmission.

Hi, thanks for writing in. This could well be a failure of the fuel pump relay, or the crankshaft position sensor. Both electronic components which can start failing from heat/use, then cool off and work again. Over time, sometime a short time, they fail more and more often and then suddenly there is no recovery. Since the crank position sensor should set a code when it fails, but the fuel pump relay won’t generally - check/replace the fuel pump relay first. I would recommend having YourMechanic.com confirm the diagnosis for this issue, provide an accurate assessment of damage, and estimate the cost of repairs. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Could a battery without enough voltage cause starter to whine?

Hi There, If the starter is producing a whining sound, this is usually related to an incorrectly adjusted starter. The starter has a small gear on the end of it called a pinion gear that comes out of the starter...

Q: How much would it cost to fix and buy a radiator and lower hose for a 1997 Jeep Grand Cherokee?

A radiator and radiator hose is typically a relatively inexpensive fix, however you may want to consider having an inspection done on the vehicle to be sure there are not other issues that may be present. I would suggest checking...

Q: When I start the Jeep I hear a clicking noise once I turn the ignition , it wouldn't start til I pushed the accelerator

Hi There, It sounds like you may have a weak battery or potentially a faulty starter solenoid. Generally, pressing the accelerator makes no difference on today's modern vehicles due to the throttle by wire technology cars are equipped with. The...

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 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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...