Question about 2000 Jeep Grand Cherokee

1 Answer

What could be causing multiple engine missfires

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,116 Answers

This could be one of many things:

1. Bad or dirty spark plugs. Oil could be getting on the plug tips and fouling the plugs.

2. Bad plug wires. Wires are arching and causing the plugs not to fire properly.

3. Bad electronic ignition. This could be a bad module,

4. Dirty fuel injectors.

5. Cam Sensor is bad. This usually happens after the car warms up.

6. PCM (Powertrain Control Module) could be failing

7. More more more

Check or have checked the OBD codes and verify the exact problem. This will tell you the cause and you can resolve the problem based on this result.

Posted on May 25, 2011

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 2 Answers

SOURCE: benz e420 multiple cyl missfire

also check and see if the updated Mass Air Flow sensor has been installed, these go bad all the time causing all kinds of weird misfires and other problems.

Posted on Jul 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I replaced head gaskets on 2004 dodge dakota. when started it ran rough and lacked acceleration. Code P0300 and o2 sensors showed. replaced all 4 O2 sensors, but still rough idle and code P0300


That's Random or multiple missfire code. Have you checked for proper fuel pressure? Improper fuel pressure will trigger this code if it's too low, thus causing a lean mixture in multiple cylinders.

Feb 26, 2013 | 2004 Dodge Dakota

2 Answers

Multiple engine codes 2002 tribute. p0171, p0174, p0300, p1401


I doubt it.
Codes 171 and 174 are for lean fuel mixtures, 300 is for random missfires which could be fuel or ignition related, and 1401 is for a problem with the EGR valve system. Now the EGR could cause the other codes if the valve is open or leaking when it should be closed.
The EGR valve and sensor would need to be tested first.

Jan 29, 2013 | 2002 Mazda Tribute

2 Answers

I changed the plugs and wires on my 2003 trailblazer. I gapped the spark plugs @ .040 and checked all of the connections. Now my engine skips. It gave a 0300 code ( multiple cylinder misfire). Any...


if its a multiple missfire then i would suspect your fuel pressure is dropping or your regulator has failed and is sucking too much fuel causing the computer to overcompensate, these engines are also known for intake leaks

Mar 28, 2011 | 2003 Chevrolet Trailblazer Ext

1 Answer

I have a 1999 Chevy Blazer 4.3 . It is running bad . I used an OBD II scanner and it pulled up a PO300 code which suggests a Laundry list of things that could be wrong . ...


p0300 should be multiple missfire. check for compression these engines tend to bend valves very easily if ran on old gas or a batch of bad gas. causing it to missfire in more than one cylinder. they also crack heads between valves if overheated.

Mar 16, 2011 | 1999 Chevrolet Blazer

1 Answer

2003 freeland code p1319 , misfire code po301,po302,po303,po304, misfire at idel, high speed drive fine,


OBDII those codes generally mean misfire.

P0300 multiple missfire
P0301 missfire cyl 1
P0302 missifre cyl 2
ect.

Ensure you have the proper spark plugs. Check the coil boots/wires, look for burn marks. Anything beyond that you may have to take it back to the shop.
You are misfiring on all 4 cylinders and it is not spark plugs. Those misfires if not addressed can cause serious engine and/or cat converter damage. There are lots of things that could be causing it and most of them need to be checked out at a shop - unless you want to invest several thousand dollars in the appropriate equipment and training.

Dec 21, 2010 | 2003 Land Rover Freelander

2 Answers

Engine runs poorley i had the code checked once it read missfire on no.1 i later hade it checked again and now it sais missfire on no.6


t is likely the PCM itself is faulty with multiple cylinder misfires.
.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for helping with your FREE question

Sep 05, 2010 | Chevrolet Venture Cars & Trucks

2 Answers

I have a missfire code on the check engine light. 1997 honda prel


Find out which cylinder is missfiring by using an inductive timing light to check each plug wire for spark. If you find a dead wire you should replace the all the wires and spark plugs. If you don't find a dead wire check the distributor cap. You could have a broken contact or a crack which might cause a loss of spark at one cylinder.

Honda wires are much better than their aftermarket counterparts so don't skimp there.

I hope this helps. Good luck and be careful!

Dec 11, 2009 | 1997 Honda Prelude

2 Answers

Benz e420 multiple cyl missfire


hello,good day,hoping your car is already scan with hht or star,then engine missfiring very general,you have to check fuel injection and ignition system,hoping your fuel system is clean,if your tester appear your cly.8 coil is defect,try to put cly.8 coil in other cly.for testing purpose,hoping your engine is v-8,119,or 113,or try to check the pressure diapram in fuel rail,ty

Jun 24, 2009 | 1997 Mercedes-Benz E-Class

Not finding what you are looking for?
2000 Jeep Grand Cherokee Logo

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...