Question about 2000 Jeep Grand Cherokee

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I have a 2001 jeep grand cherokee 4.7l my problems all started with a knock hesitation & rough did self diagnosis & came up with p1391 p0307 & p0357 what does each one mean for that year make & model i change the coil pack & the knock came back???? & these codes are what came up what should i do

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Hi there,
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Posted on Jan 02, 2017

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Anonymous

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SOURCE: Jeep Hesitates. P0303 code

Check the cylinders Commpression. over 115 psi is good, 120 psi is normal.

Posted on Sep 17, 2008

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Anonymous

  • 837 Answers

SOURCE: 2001 Jeep Grand Cherokee code P1391

I would check to be sure that the timing chain hasn't jumped at all ..

Posted on Mar 25, 2009

hribrahim

  • 90 Answers

SOURCE: multiple misfire 2001 jeep grand cherokee

would recommend a compression check be carried out as you may have internal mechanical problems

Posted on Jun 19, 2009

Richard Scordino

  • 6982 Answers

SOURCE: I have a 2001 Jeep Grand Cherokee and my check

could be a crank or cam sensor beginning to fail, or a bad harness connection at either. Usually though you would feel a problem there as both are necessary to keep the engine running.

Posted on Oct 12, 2009

Richard Scordino

  • 6982 Answers

SOURCE: 2001 Jeep grand cherokee motor knock 4.7 motor

First, if the noise is from the upper part of the engine and is more of a tapping than a knock, likely you have a problem in the valvetrain, most often a bad lifter or worn rocker arm. If the noise is low, deep inside, the noise is from a bearing. This is generally accompanied by lower than normal oil pressure. Regardless of the underlying cause, correcting the cause will not stop the knock. To do that correctly, the engine needs to be removed and all crankshaft bearings and the crankshaft itself need to be replaced (crank can sometimes be "undercut" and thicker bearing shells can be used depending upon the amount of wear.) If caught very early, sometimes only one bearing can be replaced in-car, but in 99% of all cases I have ever seen, most will fail again, sometimes more severely if done this way.

Posted on Dec 10, 2009

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1 Answer

2001 grand Cherokee what does this code P1391 4 x 4


does it run? wow no symptoms, why make this so hard?????
did you read the FSM yet,, no.
did you see it free here.
P1391
loose of CMP/CKP
English, the cam or crank sensors are not firing right.
1 in 10 pulses will trip this (bad) or dead.

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service


Jul 31, 2014 | 2001 Jeep Grand Cherokee

1 Answer

2001 grand Cherokee what does this code P1391


double posted, but not double angered,
id did answer, and with FULL FSM too.

Jul 31, 2014 | 2001 Jeep Grand Cherokee

1 Answer

I have a 2001 jeep grand cherokee and it giving me four code p1391 p0351 p0352 p0353 i will like to know the problem please


For some reason you question has been duplicated several times, so I will answer this one.
Code 1391 may be a problem with the ABS system, the other three codes are concerning the first 3 coils. Your engine has direct spark so each cylinder has its own coil.
I would clear the codes and see which ones come back after a test drive. If the three coil codes come back the coils would need to be tested.

Dec 19, 2012 | 2001 Jeep Grand Cherokee

1 Answer

2002 grand cherokee, overland 4,7L engine doesnt


Hi Joko,

What you are describing is a failure of a main circuit. The first thing you should check is yo make sure that your battery is in good condition and that the cables are clean and tight. Let me know if yu find anything wrong there. Then there may be another main circuit problem. Check all of the fuses in your fuse block in the engine compartment. If any of these fuses are blown, it will usually cause several things to not work. If you find any fuses blown, DON'T REPLACE IT YET. Let me know WHICH fuse is blown and I can help you find out why it blew so you can get the problem fixed.

Get back to me on this and we will continue.

-Dave (dttech)

Nov 17, 2011 | 2002 Jeep Grand Cherokee

1 Answer

My 2001 Jeep Cherokee rough idle on hot start up


SOUND LIKE INTAKE MANIFOLD VACUUM LEAK OR VACUUM HOSES VACUUM LEAK.ALSO DIRTY FUEL INJECTORS WILL CAUSE THAT PROBLEM YOU DESCRIBE.

Apr 02, 2010 | 2001 Jeep Cherokee

1 Answer

I have a 2001 Jeep Grand Cherokee and my check engine light is on. Took it to "Advance Auto Parts" and got the code P1391. What is this?


could be a crank or cam sensor beginning to fail, or a bad harness connection at either. Usually though you would feel a problem there as both are necessary to keep the engine running.

Oct 12, 2009 | 2000 Jeep Grand Cherokee

1 Answer

2001 grand cherokee ltd completely lost power


Check the connections at the battery. Be sure they're clean and tight.

May 09, 2009 | 2001 Jeep Grand Cherokee

1 Answer

2005 jeep grand cherokee limited 5.7 hemi vehicles hesitates


The egr valve is located on the front of the right cylinder head. It has a tube attached to it and going to the intake manifold.It has failed and is why your jeep is running rough and hesitating. Replace it and it will fix your driveabllity issues. Disconnect the battery for 2 min to clear the code.

Apr 01, 2009 | 2005 Jeep Grand Cherokee

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