2002 Other Jeep Models FUEL PUMP

MICHAEL5435

MEMBER
2002 JEEP

2002 Other Jeep Models V8 Automatic 74500 miles

HOW MANY O RINGS ON A JEEP GRAND CHEROKEE ELECTRONIC FUEL PUMP WITH A 4.7 ENGINE ALSO WHEN COLD IT START5 REALLY HARD LIKE TS NOT GETTING ENOUGH FUEL TO PRME THE ENGINE BUT WHEN ITS WARM IT FIRERS UP IMEDEITLY THIS HAS ME BAFFELED AND ALSO MY TECHNICAL MECHNIC SAYS THE PUMP HAS 2 O RINGS AND ONE OF THEM IS DAMAGED OR OUT OF PLACE OR POSSIBLIY NOT EVEN ON THE PUMP PLEASE HELP ME THANK YOU

1 Reply

MATHIASO

MECHANIC
1,209 POSTS

I can't see o-rings but there is a module gasket that needs to be replace whenever the fuel pump module is service.

The gasket is located under the fuel pump module.
What I can suggest is to winterize your vehicle.
Its may save you lot of money.
Check the battery terminals and cables.
Check the charging system (12.6 volts, no less than 12.4 volts)
Check the charging system (14 to 14.5 volts)
Check the age of your battery (Most car batteries only last 4 or 5 years)
Check the strength of the coolant
Change the oil (. Synthetic motor oils are even better for easy cold weather starting.)
Clean your fuel injectors.