Skip the auto shop - Our mechanics make house calls

Q: 95 grand cher. eng turns over wont start, leave ign on and a few min later fuel pump kicks in but relays under hood make noise the

asked by on

95 grand cherokee, try to start ..wont start, leave ignition on and and a few minutes later I hear fuel pump kick in and the relays under the hood are making noise, when the fuel pump stops the noise from the relays stop, try to crank engine and it fires right up...I can drive to town and go to the store come back out in about an hour and sometimes it will crank up right away and sometimes i have to leave ignition on till the fuel pump kicks in and the relays start making noise all over again, when the noise stops it will fire right up. not sure what the problem the way after it cranks it runs great, does not miss or skip.
My car has an automatic transmission.

Hello, thank you for writing in. There are some tests that you can do to make sure that your fuel pump and fuel delivery system is working correctly. These can be time consuming and difficult to do from home without the right tools. The first thought that comes to mind when you have a delay in the fuel system is the ECU capacitors. The ECU or Electronic Control Unit is also referred to as the PCM or powertrain control module. It is responsible for sending the signals required to active the solenoids and relays that control the fuel system. If these capacitors fail or malfunction, you end up with the exact symptoms that you are having. Replacing or rebuilding the control module is the only way to correct this issue. With something like this, you may want to get a second opinion and have someone inspect the vehicle.

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. 95 grand cher. eng turns over wont start, leave ign on and a few min later fuel pump kicks in but relays under hood make noise the

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: Do wranglers normally shift at high RPM when accelerating fast on first gear?

Hi There, If this is something that generally only happens when the vehicle is still cold, this may be normal. Many newer automatic transmissions have temperature-sensors in them that, on a stone-cold start, restrict normal shift to only the lower...

Q: My Jeep stalls when I let it get below half a tank. Any ideas as to what the issue may be?

Hi there. I would believe, if the fuel tank inner liner was the issue, the stalling would occur at any fuel level. The dealer should be able to identify, any revisions to the fuel tank part number. It may be,...

Q: Pin in ECU connection broke and car won't start

This sounds like a pretty big deal. If the pin is one the connector side, you may be able to simply replace it with a new pig tail end. If the broken pin is in the ECU, unfortunately the ECU...

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...
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...