1994 Jeep Grand Cherokee Laredo .Driving along and engine began sputtering as if running out of fuel. Picked back up and drove fine. Parked in drive way once again began sputtering and fluttering as if running out of fuel. Died and has not restarted. Have fuel pressure but not firing. A month prior was jump starting another car and got cables crossed. Killed engine as soon as tried starting other car. But recharged battery and it started and ran well until the problems mentioned above. 5.2 full time 4WD automatic. Fuel pump replaced 6 months ago.

The fuel pump relay switch on a 1994 Jeep Cherokee Laredo 4.0 four-wheel-drive is located in the Power Distribution Center (PDC) under the hood. It is labeled as "Fuel Pump Relay" and is the fourth relay from the left.

go to repair shop urgently before its too late............

When they sputter it is mostly the fuel pump. One way to check is hit the bottom of the tank in the center. The vibration will jar the pump and most times they will start pumping again. This is not a fix, you still have to replace the pump. This is just an easy way to make sure your changing the right part.

Check to see if the fuel pump is running after it shuts down...could be a relay or the pump itself (overheating internally) Checked the fuel filter yet? Some crank sensors need to be shimmed. If it's too close to the flywheel even though you recently changed it, if it's too close to the wheel it can fail again. May not be the case but worth checking over. Also check the ceramic resistor on the left fender near the master cylinder if you have one. That too can cause problems.

check the cam sensor and crank sensor, also is the distributor turning,possible distributor gear pin broke

Have you thought about it possibly being the engine that has something wrong with it? Have you checked the cylinders?

I have the same problem on my 95 grand cherokee laredo. Sometimes it starts out fine and after about 10 miles it starts spitting and sputtering. Then after a while it seems to clean out and run fine again for a little while. Then other times it starts out spitting and sputtering at the begining. I changed the fuel filter and that was not it. It is a 4.0L 6cyc. Any Ideas?

Thanks,
Broken Arrow, OK

You can check fluid level by removing the rubber plug in the cover. Fluid is full when on level ground, it is just at the edge of the hole (or very close) if you are already getting noises out of there, you can remove the cover and inspect gears for wear or breakage. If you find a large amount of metal debris in the lube it tells you something bad is going on back there. Although rebuildable, it's not a home job...requires exact settings in order to operate properly. You can find good units far cheaper than even a gearset costs in any scrapyard. to match ratio, count the teeth on the ring gear and the pinion gear. the replacement MUST have the exact same number. Before swapping diffs, check all back there to make sure noise is not from somewhere else.

he may have left a bare wire that is powered that is shortning out when touching metal, speaker wires are connected to back of stereo and still run a current even when disconnected from speaker end if touching metal may corse a short it sounds like its just touchig metal every bow and then when driving and bumpy

Fill the rad and check for leaks. Bring the engine temp up to normal, if necessary. Try not to spill any water when filling the rad, if you do, let it dry before starting the car, JKust makes it easier to find the leak. Frankster016