Question about 2004 Jeep Liberty

1 Answer

I have the p0306 code showing for my 2004 3.7 liter V6 Jeep Liberty. There is a loud knocking/popping associated with this misfire. I have changed all of the spark plugs and the ignition coil for cylinder 6....same problem remains. I can feel the knocking in the gas pedal as well while driving. The idling is rough and there is loss of power while driving. The 2 other codes involved the 02 sensors. I have talked to 2 different mechanics and we are all stumped. Can anyone help me?

Posted by on

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.

  • Jeep Master
  • 20,706 Answers

But not one ASE mechanic i bet. they get it right.
so 306 means must misfire.
or better, weak Combustion on #6
so did your mech check compression on #6?
seems not. or vacuum for bouncing, seems not.
that knocking, did he check that first. it must NOT knock.
that knock is serious and will get worse, Id not drive it.
not me, engines are expensive why make it worse?

Posted on Mar 08, 2015

6 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

polarcycle
  • 1392 Answers

SOURCE: check engine light codes and troubleshooting

Sounds like you have a vacuum leak for the lean code and the misfires. I don't see a 473 code in my manual, but have a 463. The 463 is for the fuel level sensor open or voltage high.

Posted on Jun 02, 2009

wracefans24
  • 1985 Answers

SOURCE: I have 2004 Jeep Grand Cherokee special Edition

have you checked the IAC, idle air control,or cleaned the throttle body and plate.

Posted on Nov 25, 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

BCAS1298
  • 3092 Answers

SOURCE: 2002 Jeep Liberty Sport 3.7L

We have an 02 Liberty 3.7L, here at my repair shop, after customer replaced, spark plug's and all coil pack's, brought it here to my shop, was running with two cylinder's miss, did cylinder compression test, no compression on two cylinder's, remove valve cover's, found two rocker arm's off, remove cylinder head's, and found that on those two cylinder's the valve seat's had drop, keeping the valve open, and that's why the two rocker arm's had come off, do a cylinder compression test, could be the same thing, hope this was very helpful.

Posted on Aug 30, 2010

SOURCE: 2002 liberty 3.7 liter. I have replaced the coil,

If you have Coil- on -Plug you haven't found the bad one yet

Your not always going to get a code that is correct
e.g.PO304,PO305 etc

I would buy the injector from you, as I'm sure that wasn't it,
unless you have an air leak around it

You want no vacuum leaks,a near new EGR Valve,no
air induction tubing leaks

Clean the MAF Sensor with CRC MAF Cleaner

Clean Throttle Plate--CRC Throttle Body Cleaner

You did put anti-sieze on those spark plugs, if not
do so.

How old are the O2 Sensors
More than 80,000 mile,replace the front 2 with OEM
Specific Make--Bosch or NGK etc and not some
cut & splice universal type

Posted on Feb 01, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2003 jeep liberty 3.7 code po300, po302 what does this mean


These numbers are OBD codes. They are misfire coding.
There is a youtube video to assist with troubleshooting.
Trouble shooting misfire Code P0300 P0301 P0302 P0303 P0304 P0305 P0306...

Good luck.
Semper Fi,
Z

Jun 04, 2017 | Jeep Cars & Trucks

1 Answer

2003 jeep liberty po302


Answered in another location. This is a misfire code for #2.
Here is a video to assist in trouble shooting.
Trouble shooting misfire Code P0300 P0301 P0302 P0303 P0304 P0305 P0306...
Semper Fi,
Z

Jun 04, 2017 | Jeep Cars & Trucks

1 Answer

Luz marcada con el numero cinco?


2003 Jeep Liberty- Reading Engine / Diagnostic Codes ...

? 1:13
https://www.youtube.com/watch?v=pGrPBBzp7wE
Jan 6, 2013 - Uploaded by DeathScouter
2003 Jeep Liberty- Reading Engine / Diagnostic Codes ..... error code will flash 2 times, brief pause, flash 1 time, pause, flash 5times, pause, ...

2005 Jeep Liberty possible cause of P0442 error. - YouTube

? 5:26
https://www.youtube.com/watch?v=2ba-gH0gadg
Dec 21, 2014 - Uploaded by TheBGravit
While replacing a bad fuel pump I believe I found the cause of a P0442 Error code. I was able to repair the ...

Jeep Liberty Questions - Cylinder Misfire code - CarGurus

www.cargurus.com > Questions > Jeep > Liberty

CarGurusMay 27, 2009 - My jeep Liberty 2009 does the same the Dashboard showed a code of cylinder .... i have a jeep liberty 2006 with the # 5 cylinder misfire. i replaced the sparks... I have a 2005 Jeep Liberty 6 cylinder, engine light came on scaned the ... 2002 jeep liberty camshaft posistion sensor error code p0340 5 answers.

Check Engine Light/Misfire Due to Intake Valve Locks ...

repairpal.com > Problems > Jeep > Liberty
Recently got a second hand 2005 Jeep Liberty Sport. Everything worked fine ... #5intake valve seat dropped and held open the intake valve. 2008 Jeep Liberty.

OBD-II Trouble Code: P0305 Cylinder 5 Five Misfire Detected

www.obd-codes.com/p0305


Dec 08, 2015 | 2005 Jeep Liberty

1 Answer

03jeep lbertyrandom missfire cyl 2 4 6check engine light flashing


Check Engine Light/Misfire Due to Intake Valve Locks ...

repairpal.com > Problems > Jeep > Liberty
Jeep Liberty Check Engine Light/Misfire Due to Intake Valve Locks/Valves. ...Misfire cyc 4 and random cyc misfires, changed coil packs and plugs... sounds as if rod ... Light came on again (misfire on cylinder 4) - switched coil from 4 to 2. Light ...

Jeep Liberty Questions - Cylinder Misfire code - CarGurus

www.cargurus.com > Questions > Jeep > Liberty

CarGurusMay 27, 2009 - #4 misfire new plugs and coil pack on #4 light came back on after 300 miles if ... How come it stopped misfiring for 2-3 months, and now is back? ... I have a 2005 Jeep Liberty 6 cylinder, engine light came on scaned the codes ...

Liberty Cylinder Misfire / Computer issue? - JeepForum.com


Nov 28, 2015 | Cars & Trucks

1 Answer

Okay i have a 03 jeep liberty with the 3.7L v6 for the last week ive been having alot of codes pop up the main codes are p0300,p0305,p0306. Now ive chamged the ignition coils and keeped the spark plus and...


Pcm is probably going to limp mode. Did you check the crankshaft position sensor? I don't see a test procedure in the manual, but a new sensor is less than $25.
0996b43f8020243a-z51ydotzssbx3fkw4old43yo-2-0.gif

Jul 15, 2017 | Cars & Trucks

1 Answer

2001 ford taurus 3.0 v6 code p0306 misfire


Please go to this page for engine misfire causes.

Aug 08, 2012 | 1997 Ford Taurus

1 Answer

Cylinder #3 on my 3.7 liter V6 liberty is knocking lightly. how can I fix this?


check first coil pack for #3 if it is within the specified resistance range.
and
if you think which one more cheaper, repair or buy an engine.

Feb 22, 2012 | 2002 Jeep Liberty

1 Answer

The code I have is P0306 Cylinder 6 misfire detected and I want to try to locate which cylinder is the sixth cylinder to troubleshoot. This is on a 2004 Jeep Liberty 3.7L


Having the same problem with my 2004 Liberty. The 6th cylinder is the farthest one from the front on the passenger side of the engine. I have a loud knock associated with the misfire and can't figure it out...have changed the plugs and the coil on the cylinder and it is still misfiring.

Dec 19, 2010 | Jeep Liberty Cars & Trucks

Not finding what you are looking for?
2004 Jeep Liberty Logo

973 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

75197 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7782 Answers

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

Answer questions

Manuals & User Guides

Loading...