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2001 jeep grand cherokee error code p0300

Engine starts but wont stay running

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  • 63 Answers

Fuel pump,injector

Posted on Nov 01, 2012

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Posted on Jan 02, 2017

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SOURCE: engine code 95 jeep grand cherokee lerado

12 is a battery disconnect within the last 50 start cycles and 55 means the end of the diagnostic cycle.  Basically the computer found nothing wrong. The 12 code may seem incorrect if you haven't disconnected the battery recently, but from my experience the 12 code shows up almost all the time regardless.

Posted on Dec 16, 2008

crayzeetrayn
  • 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

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SOURCE: my 2000 jeep Grand Cherokee engine light came on and stayes on

Here's a link that give's jeep check engine light code's,
http://www.engine-light-help.com/jeep-check-engine-light.html

hope this help's.

Posted on Apr 03, 2009

j_del
  • 1586 Answers

SOURCE: I have a 2001 Jeep Grand Cherokee - Limited My

That's a generic O2 sensor circuit overvoltage warning. Did they find any additional codes? Also, did they clear the code for you? Your car is an OBD2-emissions car, meaning you'll have an O2 sensor before and after each catalytic converter. Is your engine the V8 or the inline 6? If it's the V8, you'll probably have four (although it could be two or three) O2 sensors. If it's the inline 6, you likely only have two. I'm asking about additional codes because that one doesn't help narrow down which sensor is bad. Have you noticed your gas mileage dropping at all? Or a buildup of black carbon soot in the tailpipes? Maybe less power than usual? If so, it's probably a primary (pre-cat) O2 sensor. Those are the ones that determine how much fuel the engine will be fed. If you don't have any discernable difference at all, it's probably a secondary sensor (post-cat). The issue I have is, either of those should throw at least one additional code (either to indicate which sensor is going bad, or in the case of a secondary sensor, you'll usually see a "catalytic converter below threshold" or similar code, since the secondary sensors are used by the computer to see how well the cats are working).

Any additional codes in there, or symptoms you can describe?

Posted on Nov 11, 2009

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SOURCE: 2002 jeep grand cherokee with 4.0 engine will die but restart

p0340 is the cam shaft sensor, this will cause it to cut off while driving, hardtime starting, p0351 is the ignition coil A primary/secondary curcuit mal function. p1391 is ignition system misfire, this could be plugs, wires, or coils. first of all have the cam sensor changed and it may correct the rest of the codes. when fixed turn light off with obd2 scanner. if you do not have one, then any auto parts store will erase the codes fo free of charge.

Posted on Jan 21, 2010

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2001 grand Cherokee 4 x 4. Code P 03005


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1 Answer

2001 grand Cherokee. Code P0300


po300 is a random misfire, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why. If it was a po302 this means its #2 cylinder thats misfiring,ETC, But po300 could be any one of the cylinders. check plugs, wires, fuel injectors, Etc. Good-Day!

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Error Code: 22
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The engine is not getting gas. Check fuel pump fuse and relay. If ok could be bad fuel pump.

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1 Answer

Why wont jeep stay running without giveing it gas


throttle is set low, or you may have a fuel pump going out.

Aug 24, 2009 | 2001 Jeep Grand Cherokee

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2003 Jeep Grand Cherokee check engine light stays


go to autozone they will check codes for free

Jul 23, 2009 | 2003 Jeep Grand Cherokee

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I think Electric Problem


sounds like your ignition coil is faulty you may want to have it tested.

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