Question about 2000 Jeep Grand Cherokee

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My jeep takes a minute to crank and once it does its runs rough. I have a code that states I have low fuel pressure.

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  • Jeep Master
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Replace fuel filter , located behind tail , over fuel tank , then check fuel pressure again, also check air filter

Posted on Sep 06, 2010

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2004 chevy silverado 5.3L V8 runs rough and stalls


Well, code 336 is for a problem with the crank sensor, and code 171 is for fuel system too lean bank one which is the side with cylinder one. Since you have checked fuel pressure and I will assume fuel volume is good, the crank sensor or circuit could be at fault.

Jul 09, 2013 | Cars & Trucks

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My 1994 Jeep Grand Cherokee with the 5.2L is very difficult to start if it has not been run in the previous 6 hours. Replaced ignition coil but didn't solve the problem. After sitting overnight it


Low fuel pressure.
You need to check the fuel pressure on the first crank and watch it as it is running.
Requires a special gauge.
If it were just a starting problem I would say it could be a pump relay, but not if it runs rough for 5 min.
Might be a dirty filter or problem in the tank.

Jun 29, 2012 | 1994 Jeep Grand Cherokee

1 Answer

Jeep is hard to crank an when it does it runs rough for a few minutes until you rib it up then it runs ok but does not get good fuel milage, i replaced crank sensor,spark plugs,three fuel pumps and...


It sounds like there is a fuel leak. Most possibly internal to the fuel pump module. There is an o-ring above the fuel pump on the module that deteriorates and allows fuel to drain back into the fuel tank. It causes a host of problems including yours. Connect a fuel pressure guage, start the engine and watch the pressure increase to @49psi. Then shut off the engine and check the pressure drop. It should not drop bellow 20psi within 10min, and still have some residule pressure the following morning. If not then the o=ring will require replacing, Sounds like its been going on a while. worth a look!

Aug 21, 2011 | 2000 Jeep Grand Cherokee

1 Answer

96 Jeep grand cherokee. 4.0 Running rough and


fuel pressure seems a bit high...could be a bad regulator. can't remember if yours is on top of the sending unit (on tank) or on the fuel rail though. Do more testing there.

Jan 13, 2010 | 1997 Jeep Grand Cherokee

1 Answer

1999 JGL low fuel pressure backfires when the gas is applied


Did you replace the fuel pressure regulator.

Sep 11, 2008 | 1999 Jeep Cherokee

2 Answers

94 Jeep Cherokee won't start


I believe the green wire is a pulse from the distributor and its a ground signal. I could be wrong since is been a while since i left the jeep dealer...I would take the coil out (2 bolts on most) and take it to autozone. They can test it in minutes for free. Either that or the ignition module but more common is coil.

Aug 06, 2008 | 1994 Jeep Grand Cherokee

3 Answers

Die's


This happened to me recently on my 2004 Grand Cherokee. It stalled out three times in a month. No one came up with any codes except that my throttle sensor needed to be replaced ($80). After it was replaced, it stalled two more times, but this time the check engine light never came back on. My local Jeep mechanic looked it over for around six hours and could not find anything. However, my amps on my battery was half of what it should be. He stated that the computer may not have enough juice to control the throttle idle that activates when the vehicle is in low idle speeds. He also stated that once you remove the old battery to touch the battery cable terminals together (you can use a wrench if terminals won't touch) for around ten seconds. This is supposed to drain any remaning juice from the jeep and is supposed to reset the idle memory and computer for the vehicle. After replacing the battery, crank the Jeep up and let it run for at least five minutes without ever touching the gas pedal. Leave it to idle and I repeat, do not touch the gas during this time. The mechanic stated that letting the vehicle run for at least five minutes without touching the gas pedal will set the computer for the Jeep to run efficiently with the new battery and will also set the idle memory for the jeep. I did so and you could actually see the RPM's going up and down until the Jeep found an efficient idle setting. Try that, I know it sounds simple, but I tried every else before this, and it has not stalled out since a couple of weeks ago. I'll write back if it does before the end of next month. Hope this helps.

Jun 30, 2008 | 1999 Jeep Grand Cherokee

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