auto repair

Asked by Nov 22, 2014 at 09:39 PM

Question type: Maintenance & Repair

2004 Kia Sorento V-6 with a fault code P0305 for a misfire in cyl #5. I replaced the spark plugs and wires, which were arcing to each other as well as replacing the coil pack on cyl #2. Still prompts the same code after driving. What am I missing ?

7 Answers

60,135

If car still has misfire,the crank sensor is more than likely your problem,if you mean the light is still on and skip is fixed,reset the ECM.

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60,135

1

83,245

Did you clear the codes after the repairs were made?

Cleared codes with scan tool after replacing parts. Started it with scan tool in and P305 prompted again within about 1 minute of idling in place.

83,245

Then go with what T S T suggested. Dirt and oil are the biggest problem for these sensors.

Will the crank sensor prompt a misfire code specifically for cyl #5 (P0305) or a code at random ? Does the crank sensor actually pick up what cyl is not firing from the crank sensor ? Would the vehicle also prompt a code for the crank sensor or no ? Are we dealing with cause and effect with the crank sensor missing the ability to fire #5 ? It actually has spark at #5 plug which confuses me. What do you think ?

83,245

The crank sensor picks up a magnetic pulse as the crank turns, there is a pulse ring on the crank that corresponds with each cylinder. So you stated that you are getting spark at number 5 so that would indicate that the crank sensor is operating properly. It is possible that the ohms could be out of specs on number 5 coil, make sure you check for carbon tracking. You should also check to see if the you have a vacuum leak on the number 5 intake runner, or if the number 5 fuel injector is out of specs.

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