Question about 2001 Jeep Grand Cherokee

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Computer reads misfire cylinder 2 and 6

I put new plugs in and computer reads misfire cylinder 2 and 6

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Like Ronald Wilson said it could be something linked to the ignition ( ignition coil, spark plugs or spark plug leads ).
No injectors or oxygen sensor.

Posted on Mar 21, 2014

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Posted on Jan 02, 2017

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SOURCE: 1997 Nissan Altima Cylinder 1 misfire detected.

This Sounds Like a COIL PACK Problem

Posted on Aug 05, 2009

  • 34 Answers

SOURCE: 2001 jeep grand cherokee limited

no o2 couldnt do that it would have jump time you need to ****** your timing back to its time to get them ploblems fix then get a new timing belt dampner to keep it on track dont run anymore untill you get this fixed

Posted on Jan 16, 2010

wracefans24
  • 1985 Answers

SOURCE: Check engine light flashing

the fuel injector is not pulsing correctly,it probably has something in the screen in side of it,you will need to check that screen in the injector or replace it

Posted on Nov 25, 2009

  • 701 Answers

SOURCE: the jeep still misfire on #2 cylinder after

Hello regenald_135: My name is Roger and I will help. It appears you have replaced most of the parts related to a misfire. Have you checked the compression in number two cylinder? Without the proper compression the cylinder will not fire. The compression should be (120 to 150)psi. But any thing less than (100)psi. and the cylinder will not fire. The cause of low compression could be valve or piston related.Having replaced all the parts that already I would strongly recommend the compression test as this will likely show the problem. One other place you might also check. Remove the distributor cap. Try to move the rotor side to side.If the rotor wobbles side to side the distributor shaft bushings are worn. Be movement I mean more then a few thousands of a inch. I have ran across this a couple of times. This usually presents as a out of time engine. But could be the early stage of distributor failure. Should you need further help please just ask. Please rate the answer. This is my way of knowing the answer helped. Thank You for using Fix Ya. Roger

Posted on Mar 20, 2010

  • 1 Answer

SOURCE: Jepp Cherokee 2000 4.0 L 123K miles, cylinder #6

i have a 2000 jeep cherokee and random cylinders are misfireing so i changed the spark plugs and now its just reading that cylinders 4 and 5 are misfireing. it drives fine around town but if i go 70 or a little over on the highway it starts to buck or bogg out i dont want to spend the money on a coil pack without testing it first but i cant find the specs to test it idk what to do????

Posted on Apr 13, 2010

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1 Answer

What causes misfires?


If the misfire is on one a particular cylinder or perhaps 2, these issues need to be addressed and checked...
1. Power to the spark plug.
2. Coils and spark plug condition.
3. Fuel supply to the cylinder
4. Air supply to the cylinder
5. Correct fuel/ air mixture to the cylinder
6. Cylinder compression. Low compression or a cylinder compression level below spec will result in a misfire. If the compression tester shows low compression in a cylinder the causes of the poor compression reading then need to be addressed.

The fault codes generated by the computer and read by an appropriate scanner will tell you which cylinder or cylinders are misfiring.

Nov 14, 2015 | Cars & Trucks

1 Answer

Cylinder #1 continues to Misfire


What DTC code(s) are you getting?
You performed a compression test on cylinder #1; did you test cylinder #2?
Compare the readings, if there is a significant difference in compression readings between the two, you may have a bad head gasket, a bad valve, etc.
The bottom line, the problem is internal to the engine.

Dec 09, 2013 | 2002 Buick LeSabre

1 Answer

How do i fix a misfire on a 1996 suburban


Hi Yvonne, I'm glad to help!

The first step when you have a misfire is to see what is causing the misfire. Technicians always rules out mechanical failures before moving on too Electrical issues. What you need to do is check compression on cylinder 2 and see if its good. Remove the spark plug and test it with a compression tester. It should read somewhere around 150 PSI or more. Check it to cylinder 4 and make sure the reading are close they must be within 25 %. If the compression is GOOD then you'll need to move to the electrical checks. Here's how you rule out parts. It doesn't matter if you have plug wires or coil-on-plug. SWAP the parts from cylinder 2 to cylinder 4 and start the engine and if the misfire moves from 2 to 4 then you know its either the spark plug the spark plug wire or the coil pack if you have a coil instead of a plug wire. If the misfire does not move and stays in cylinder 2 then it could be an INJECTOR, WIRING ISSUES, COMPUTER DRIVER. As you see Yvonne it can be a lot of things that can cause a misfire. Hope this helps and have an awesome day Yvonne.

Apr 11, 2012 | 1996 Chevrolet Tahoe

1 Answer

I have a sebring 2004 v6 2.7 which is misfiring. put it a new coil and changed plug on cylinder that doesnt fire still no spark. im getting power all th way to the plug tested with volt meter.it reads 14...


Invalid test. When plug fires, the wire shoots around 40,000volts. When not firing, there is no current in the wire.
Try switching the misfiring plug wire with another that is firing. Switch them both at the plug and at the coil tower. If that was a bad plug wire, the misfire will now be on the cylinder where you put the suspect wire. This will confirm a bad plugwire.
Good luck.

Nov 25, 2011 | 2004 Chrysler Sebring

2 Answers

Why is my 1997 expedition showing a misfire on number 2 cylinder OBD code PO302. Also I am getting code readings PO174 andPO171 system to lean on Bank 1and 2


PO302 is being a misfire, could mean the plug is bad or the coil is bad for that cylinder. Which can give you the misfire reading and the system to lean codes. Check the #2 coil for firing.

Jan 28, 2010 | 1997 Ford Expedition

2 Answers

Jepp Cherokee 2000 4.0 L 123K miles, cylinder #6


try changing your crank senor. Get part from the dealer... My jeep was misfiring and changed OEM part and jeep rides good.

Apr 27, 2009 | 2000 Jeep Cherokee

4 Answers

HI I HAVE A 2001 MAZDA TRIBUTE AND THE CODES PO301 AND PO303 CAME UP IN THE DIAGNOSTIC REPORT. THE CAR TURNS OFF WHEN I WARM IT UP IN THE MORNING IN THE COLD AND AFTER THAT ITS FINE I ALREADY CHANGED THE...


cylinder 1 misfire and low compression. Plugs and wires changed plus new fuel injectors. The engines still misses and no one can find the cause. When put on the computer it read misfire cylinder 1.

Dec 31, 2008 | 2004 Mazda Tribute

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