My P0302 Misfire experience and solution
#1
Utopia Taco Bell
Thread Starter
My P0302 Misfire experience and solution
Just posting this P0302 experience of mine so it can help someone who doesn't have massive amounts of time to search.....
I have a 2005 RX-8 with 63,000 miles.
I replaced the Ignition coils, wires and plugs at 60,000 during a tune up.
With only 3,000 miles since my tune up, my car was starting to lose gas mileage and was taking more time getting started, whether on a cold or warm engine. Just recently, my 8 started to have problems in the street.
While I was driving, all of a sudden, my engine started to sputter and the engine noise switched between two different tones. I had intermittent power and the revs were not smooth when accelerating from a stop. While stopped I would sometimes stall, my idle was rough. I did not get a CEL untill this had been happening for at least 1 hour. At first the CEL would blink and then it would be on steady. Restarting the car sounded like it was almost flooded and it would crank for a very long time.
I got the CEL scanned at Autozone and it came up as a P0302 (rear rotor misfire).
I swapped ignition coils on the rear rotor and my problem was solved. Turns out one of the coils I bought for my tune up were defective.
So if you're having these symptoms I hope you find this post helpful.
I have a 2005 RX-8 with 63,000 miles.
I replaced the Ignition coils, wires and plugs at 60,000 during a tune up.
With only 3,000 miles since my tune up, my car was starting to lose gas mileage and was taking more time getting started, whether on a cold or warm engine. Just recently, my 8 started to have problems in the street.
While I was driving, all of a sudden, my engine started to sputter and the engine noise switched between two different tones. I had intermittent power and the revs were not smooth when accelerating from a stop. While stopped I would sometimes stall, my idle was rough. I did not get a CEL untill this had been happening for at least 1 hour. At first the CEL would blink and then it would be on steady. Restarting the car sounded like it was almost flooded and it would crank for a very long time.
I got the CEL scanned at Autozone and it came up as a P0302 (rear rotor misfire).
I swapped ignition coils on the rear rotor and my problem was solved. Turns out one of the coils I bought for my tune up were defective.
So if you're having these symptoms I hope you find this post helpful.
#3
RX8 P0302 misfire
Thanks - same deal here - 2005 RX8 73K - overfilled oil ran for a week ok as long as I parked nose uphill. Drained extra oil cleaned maf and air filter. Ran like a champ unless I parked nose down hill. Ran for another week parking nose uphill - wow it was running great. Thought... ok I'll try parking down hill (also after car wash) drove home. climb up last hill to house was rough - now doesn't start without misfire. checked spark on rear rotor = nothing - ordered BHR coil kit today.
Here are some photos in 4K:
https://drive.google.com/folderview?...kE&usp=sharing
- engine bay
- accordion tube with oil in it (should I also clean UIM LIM?)
- coils
- coils and plugs removed
- spark plug centers - do these look normal?
- crankshaft sensor from under car
Always in your debt for the great info on this site.
Here are some photos in 4K:
https://drive.google.com/folderview?...kE&usp=sharing
- engine bay
- accordion tube with oil in it (should I also clean UIM LIM?)
- coils
- coils and plugs removed
- spark plug centers - do these look normal?
- crankshaft sensor from under car
Always in your debt for the great info on this site.
Last edited by IgNord; 03-22-2014 at 04:30 PM. Reason: Adding info and photos
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