Question about 1999 Jeep Grand Cherokee

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Engine Light came on with error code P0306 - 1999 Jeep Grand Cherokee

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P0306 is a #6 cylinder misfire trouble code..have seen a faulty injector on 6 cyl model,plug and/or coil on v8 models

Posted on May 17, 2009

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Posted on Jan 02, 2017

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SOURCE: 1999 lexus rx300 check engine

Your 306 code means you have a misfire on cylender 6. That may be the cause of the po 125. Inspecdt the coil, spark plug wire, and spark plug on cylender 6. With the age of the car I would replace all 3 items. If you want know how to test all 3 I can tell you process of elimination is the way to do it. Do you know how to find cylender 6

Posted on Oct 15, 2010

jturcotte
  • 8531 Answers

SOURCE: 2005 dodge dakota 3.7l check engine light on/ code

Run standard misfire tests--pull plug, attach to wire, ground plug threads to engine and crank to observe spark. If spark is absent or weak, try a different plug/wire to narrow down to spark problem.
If spark is good, run compression test on bank to check for bad valve/gasket.
If compression is good, suspect injector.

Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Posted on Jan 23, 2011

SOURCE: 2003 Mercedes e500 105000 miles

V8, think your right
Misfires all the way down drivers side

Not a Mercedes guy,so I guess you have
a bad ignition module effecting one side?

Posted on Feb 16, 2011

  • 2841 Answers

SOURCE: flashing check engine light, lit air bag light,

PO306 is a miss on cylinder #6. More than likely a bad plug or plug wire. But can also be a bad fuel injector or coil if this engine is a coil-on-plug design. PO306pd I have never head of. Air bag light lit normally indicates a problem with the SRS. This is a system that should only be repaired by a professional due to the hazards of working on this system.

Posted on Feb 28, 2011

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2008 GMC Acadia v-6, ecm code; p0306 and Traction control light come on at idle, if idle up to 2200 rpm both lights turn off


The traction light comes on because the PCM - engine computer disabled it because of P0306 - engine misfire on cylinder #6

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What does a code p0303 and p0306 mean on my 2001 ford f250 sd


Your local parts store will most likely read your error codes for free. Did the temp light come on or did it overheat

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2001 ford taurus 3.0 v6 code p0306 misfire


code p 0306 is misfire detected no 6 cylinder causes electrics
more likely a bad injector , injector wiring or dirty tip

May 05, 2017 | 1997 Ford Taurus

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2001 ford taurus 3.0 v6 code p0306 misfire


Please go to this page for engine misfire causes.

Aug 08, 2012 | 1997 Ford Taurus

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P0303 cylinder misfire


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- OBD-II Trouble Code P0300? http://schematicsdiagram.blogspot.com/2011/12/obd-ii-trouble-code-p0300.html
---------Car misfires and error code P0306 and P0303 is shown? http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
-----------
Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

-----------
Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

------------
Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

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This will help.

Thanks.

Jan 23, 2012 | 1999 Subaru Legacy

1 Answer

Ford 2003 escape codes readed


Cauases or fault codes are not cut and dry, but here are the possible causes of codes P0316 and P0306 which are related codes.
P0316 - Engine Misfire Detected on Startup
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Engine fails to start
- Engine runs rough Possible causes - Crankshaft Position (CKP) sensor harness is open or shorted
- Crankshaft Position (CKP) sensor circuit poor electrical connection
- Faulty Crankshaft Position (CKP)
- Ignition System
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Faulty Engine Control Module (ECM) P0306 - Cylinder 6 Misfire Detected Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation
Possible causes - Faulty spark plug 6
- Faulty ignition coil 6
- Ignition coil 6 harness is open or shorted
- Ignition coil 6 poor electrical connection
- Clogged or faulty fuel injector 6
- Injector 6 harness is open or shorted
- Injector 6 poor electrical connection
- Improper spark plug 6
- Insufficient cylinder 6 compression
- Incorrect fuel pressure
- Intake air leak

Jan 17, 2012 | Cars & Trucks

2 Answers

P0134 /P0306 Codes on Chevy Truck 1998


in AKO look under Self Help> My Library > Fix Your Car > then go to Chiltons or ARRC link from there.

Jun 22, 2009 | 1998 Chevrolet K1500

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