Eng light came on! code P0306 #6 misfire detected! WTF!? - Dodge Charger Forums
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post #1 of 10 Old 03-06-2008, 06:28 AM Thread Starter
TXboi
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Angry Eng light came on! code P0306 #6 misfire detected! WTF!?

came on wednesday and noticed my fuel mpg started to go down. hooked up my flashpaq and code 3 codes. P0306 cylinder G-misfire detected cylinder 6; U1408 no fault detected; U0184 lost comm with radio

put the car back to stock settings and bringing it in asap. i had an appt tomorrow to fix that dreaded front suspension rattle at low speeds. I'll keep u guys posted. last guy that had this code messed his eng up pretty bad. i have no internal mods that would void my warranty all i have is cai and a full exhaust system. no cam, heads or nos so i'll keep u guys posted.
Wish me luck!

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post #2 of 10 Old 03-06-2008, 07:21 AM
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good luck,,, let us know the outcome
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post #3 of 10 Old 03-06-2008, 08:15 AM Thread Starter
TXboi
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just dropped the car off. its weird because as soon as i set the flashpaq back to stock settings the light went off. is that normal? i didnt clear the codes because i wanted my dealer to see the eng light. when i dropped it off i told the service rep that the light went out & he said that happens and the cpu should have the codes in the database as long as i didnt clear them. i told him i used a diagnostic cpu u know the ones u can buy at pep boys to look up codes that your car trips (didnt wanna tell the rep "oh i used my flashpaq to look up these codes"). anyways hope they fix her because the gas mileage was bad. i mean i could see my gas needle move with not even that much driving. it was like i had a 7.0L engine
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post #4 of 10 Old 03-06-2008, 08:17 AM
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good thinking about telling them you use a diagnostic tool to read the code
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post #5 of 10 Old 03-07-2008, 09:43 PM
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Just turn key on,off on off and last on (quickly with in 3 secs)and your mileage display gives you all the codes, without a scan tool.Batt disconnnect or fuse 11 clears the codes
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post #6 of 10 Old 03-18-2008, 07:51 AM
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I had the same misfire codes along with a check engine light and engine stalls. I could never get it to the dealer with the check engine light on. They were no help. I stopped buying high grade fuels at low priced stations and the problem has not come back. In fact the last check engine light I had with misfire codes was cleared by high end mid grade fuel!

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post #7 of 10 Old 03-18-2008, 07:54 AM
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Quote:
Originally Posted by looboy View Post
I had the same misfire codes along with a check engine light and engine stalls. I could never get it to the dealer with the check engine light on. They were no help. I stopped buying high grade fuels at low priced stations and the problem has not come back. In fact the last check engine light I had with misfire codes was cleared by high end mid grade fuel!
good input!
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post #8 of 10 Old 03-18-2008, 01:12 PM
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There was a tsb on it, I had it happen to mine took it to the dealer where I found that out and they had to flash the computer and it was fine ever since.

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post #9 of 10 Old 04-15-2008, 10:55 PM
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Any idea on where there's more info on the TSB for this? Or the TSB itself?

I've had the P0302 (misfire on cylinder #2) a couple times now. Dealer said it was due to a fouled sparkplug, and that I needed to do the 30K tune up.

So I changed the plugs, oil etc. and was good for about a week, then the P0302 came back!

I read on another thread that the coil pack may be bad? Should I take it back to the dealer for them to tell me some story? Or is there something I can do myself?

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post #10 of 10 Old 04-17-2008, 11:23 PM
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Quote:
Originally Posted by TXboi View Post
just dropped the car off. its weird because as soon as i set the flashpaq back to stock settings the light went off. is that normal? i didnt clear the codes because i wanted my dealer to see the eng light. when i dropped it off i told the service rep that the light went out & he said that happens and the cpu should have the codes in the database as long as i didnt clear them. i told him i used a diagnostic cpu u know the ones u can buy at pep boys to look up codes that your car trips (didnt wanna tell the rep "oh i used my flashpaq to look up these codes"). anyways hope they fix her because the gas mileage was bad. i mean i could see my gas needle move with not even that much driving. it was like i had a 7.0L engine
Whats wrong with that ?!?!!?

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