Question about 2002 Chevrolet TrailBlazer

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I had the service engine light come on and the engine started running a little rough. The code was a cylinder misfire, so I changed the sparkplugs. Still had the problem, this time the code was reading #1 cylinder misfire, so I changed the coil pack and it is still running a little rough and the service engine light is still on

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Possibly the O2 Sensor or the Cam position sensor or the plug wires themselves.

Posted on Aug 07, 2010

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Ok i can't advise you without knowing what the code is that you are getting. it could be something as simple as a cracked seal on your gas cap to a bad wire or something more complex

Posted on May 19, 2014

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P0308 code intermintently pops up can i pass smog


  • Check Engine Lightflashing
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I have a 97 dodge caravan 2.4L dohc. I started with an engine code of p0303 and p0304. The vehicle has a rough idle and has difficulty accelerating from idle to 35mph. I've run several tests; 1, pulled all...


DTC P0303: Cylinder 3 Misfire Detected
Probable cause:
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Mar 13, 2017 | 1997 Dodge Caravan

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My 2001 oldsmobile aurora is misfiring and sputtering after i replaced the spark plugs?


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- 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

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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

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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

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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.

Feb 17, 2012 | 2001 Oldsmobile Aurora

2 Answers

Tuned up car changed 02 sensor full tank of fuel still running rough


Oxygen sensor only report the condition of the engine the rough running condition can range from a worn sparkplug wires to worn sparkplugs to valve problems to injector problems. with the cadillac deville a tune up should be the first attempt to smooth the rough idle with the inspection of the cap and rotor cap and rotor do have a tendancy to arc internally and create misfire so does sparkplug wire that can leak spark voltage to ground and create misfire. the spark plug wire especially if they are brittle and hard can create issues

Apr 23, 2011 | 1990 Cadillac Deville

1 Answer

My check engine light started blinking andthe vehicle is shaking


a blinking ck engine light means you have a catalyst damaging misfire. the misfire is also the cause of the shaking and probably low power condition. you need to have the vehicle scanned asap and try to figure out which cylinder or cylinders are misfiring by the code read by the scanner. if you have a po300 code it means you have a random cylinder misfire. if you have a po301 through a po306 then go to the cylinder 1-6 designated by the last # in the code to figure the cause from there. look for a burnt plug wire, remove the proper sparkplug and ck it. also remember to change the engine oil as there is unburned fuel getting into it every minute this condition exists that the engine is running. good luck to you.

Sep 23, 2010 | 2001 Chevrolet Blazer

1 Answer

I have a 2005 F150, that has been running a little rough and the check engine light came on. Checked the code and it read 0305. I'm not sure what I should do next.


trouble code 0305 is for cylinder misfire. misfire code for cylinder #5 which is what a P0305 code represents. There will have leaking valve cover gaskets allowing oil to contact the boots of the ignition wires and short the high voltage to ground causing the misfire.in this case check whether plug wires, sparkplugs and valve cover gaskets are in good shape .this will help you to determine the cause of your check engine light on. This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

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3 Answers

Runs rough,smells like not burning all the fuel/misfire


have vehicle scanned for the trouble code some thing is going and the code will give u ur starting point most auto stores will scan for free such as auto zone / advanced auto --if it smells like rotten eggs or like sulfur most likely catalytic converter going

Jan 16, 2010 | 2000 Saturn L-Series

1 Answer

I have a 2008 Dodge Avenger and the check engine light is blinking, also the car has a rough ride when I go from stop to acceleration.. What could this be


sounds like your have a misfire in one of your cylinders...a flashing check engine light with engine running rough. Check your sparkplugs and wires. you should have the code scanned.

Jan 06, 2010 | 2008 Dodge Avenger

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