Question about Jeep Grand Cherokee

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1996 JEEP GRAND CHEROKEE LIMITED, MIL IS ON WITH CODE P0202 CAR RUNS ROUGH AND SEEMS TO BE MISFIRING AFTER HAVING THE ENGINE DEGREASED.

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There is water under the caps for the injection.Remove them,blow out with compressed air.The Fault code is for Inj.2 output driver not getting a signal from the controller.hope this helps
( there is water in the electrical connectors)

Posted on Oct 02, 2010

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I have a 2003 jeep grand cherokee limited. it starts alright but dies almost instantly. when it does stay running it idles rough and at a low rpm. I think it could be the cam sensor but im not sure.


Checking for diagnostic trouble codes would be a good first step before assuming anything . Could have a vacuum leak , a Idle air contorl valve problem ,Mass air flow sensor problem, tps -throttle position sensors . A dirty throttle plate . Suggest you check out videos on youtube on rough running ,stalling problems !

Dec 14, 2016 | 2003 Jeep Grand Cherokee Limited

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2001 grand cherokee misfires


Contact the dealer for a possible software update to cure this issue.

Sep 10, 2012 | 2001 Jeep Grand Cherokee

1 Answer

JEEP CODES P1391 AND P1398


p1391= crankshaft / camshaft position sensor intermitant signal, check, wiring, connections & sensors
p1398= engine control system missfire detection limit reached probable causes, wiring,poor connections,engine mechanical fault,ignition/fuel system fault (causing misfire) or camshaft/ crank shaft position sensor

Jun 04, 2010 | 1996 Jeep Grand Cherokee

1 Answer

I have 1996 Dodge Gran Caravan, and it gives me these codes: 27 and 43, what do they mean??


CODE 27 - Injector Control Circuit, output driver does not respond properly to the control signal

Code 27 MIL light options: OBDII
P0201 - Injector #1 Control Circuit
P0202 - Injector #2 Control Circuit
P0203 - Injector #3 Control Circuit
P0204 - Injector #4 Control Circuit
P0205 - Injector #5 Control Circuit
P0206 - Injector #6 Control Circuit

CODE 43 - Cylinder Misfire, or Ignition Primary Circuit

CODE $# MIL options: OBDII
P0300 - Multiple Cylinder Misfire
P0301 - Cylinder #1 Misfire
P0302 - Cylinder #2 Misfire
P0303 - Cylinder #3 Misfire
P0304 - Cylinder #4 Misfire
P0305 - Cylinder #5 Misfire
P0306 - Cylinder #6 Misfire
P0351 - Ignition Coil #1 Primary Circuit
P0352 - Ignition Coil #2 Primary Circuit
P0353 - Ignition Coil #3 Primary Circuit

Feb 03, 2010 | 1996 Dodge Caravan

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Have 2000 limited 4.7. Has engine light on and checked codes,says #3 & 6 misfire. changed coils. but still have light and runs rough at 65-69 mph. A little rough at stop.


why would someone even start with changing the coils...usually a misfire is due to bad spark plugs..replace spark plugs, then go from there...just for a personal reference, the next time you want to see if your coils are bad, simply change out your bad two coils with two coils on the other side of the engine that are good...if they misfire code changes, then you know its a coil...if not, plugs...

Nov 16, 2009 | 2000 Jeep Grand Cherokee

1 Answer

'04 grand cherokee limited, 4.7 ltr, quadratrack 5 speed. At idle, engine runs rough at times and at the exhaust, you can hear it missing. Had it to the Jeep dealer twice. Changed plugs, had PCM reflashed,...


sounds like you have a coil or 2 arching out,they would have to watch misfire mointor on scan tool to see which cylinders are misfiring,also there is a tsb on that, requiring a reflash,but you said that was done,hopefully done right,dealer unable to find problem,what kind of tech is working on your jeep??? well good luck, hope this helps.

Oct 05, 2009 | 2004 Jeep Grand Cherokee

1 Answer

Very rough idle on 2002 Jeep Grand Cherokee Limited Edition V8


If you haven't changed the plugs or had the fuel system cleaned, now would be a good time to do it. The number 1 culprit for rough idles is dirty injectors or plugs. You can try an injector cleaner in a can (or bottle) for under $10 and see if it helps, and then work from there. If there isn't any improvement then if you are able to, check the plugs for any gunky buildup and if you find a bad plug, make sure you replace them all (or have them replaced) at the same time.

Aug 03, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Check engine light on. codes all say misfire all cylinders.


I would start with a complete tune up spark plugs, plug wires, distributor cap, rotor,(i even saw a complete kit including air filter for around fourty dollars on e-bay) and have your coil tested a free service at autozone then have them scan it again (free also), and erase the mil light. Hopefully this takes care of the problem chris

Jun 16, 2009 | 1996 Jeep Grand Cherokee

1 Answer

03 grand cherokee check engine lite


I have replaced the fuel rail on a couple of these for misfire codes that kept resurfacing it seemed to cure them.

Jan 06, 2009 | 2003 Jeep Grand Cherokee

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