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Old 04-06-2015, 03:49 PM
 
3 posts, read 2,572 times
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Hi guys,
I really need help I got a car 4 weeks ago I brought a car (03 Chevy Malibu base 142k mil, 3.1L V6) and the check engine light was on, so it was no way for me to pass state inspection. I replaced the battery, did a oil change and a coolant flush. Went over to autozone and had them scan it for me and code p0306 was coming up, so I changed the spark plugs in the front cylinders (2, 4, 6) and the wires. So I went to a shop to have them inspected it and put a sticker on it. But it failed, so the shop started working on it to get the code to clear, first they changed the coil pack thin the injection valve, nothing worked thin they checked the locker arms in the motor and seen that one of them was broken and lost the thread. They replaced it thin seen it messed up a piston and they replaced that. They started it back up and the p0306 code was gone and now they say its giving a p0300 code. They have had my car for 7 days now. Can anyone help me out on what to tell them to check next? I'm thinking about just taking it to another shop. I't has been 9 days now and they said thy have allot of cars and they did not work on my car in 2 days. I already paid $325 should I just wait I failed the NJ state inspection and they are going to inspect it and put the sticker on it for me after tey get the code to go away.
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Old 04-06-2015, 03:58 PM
 
19,122 posts, read 25,323,648 times
Reputation: 25429
Wouldn't it make more sense to post your question in The Automotive Forum, rather than in The NJ Forum?

//www.city-data.com/forum/automotive/

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Old 04-06-2015, 05:04 PM
 
Location: NJ & NV
5,771 posts, read 16,584,927 times
Reputation: 2475
Quote:
Originally Posted by Retriever View Post
Wouldn't it make more sense to post your question in The Automotive Forum, rather than in The NJ Forum?

//www.city-data.com/forum/automotive/

I WAS gonna say a similar thing BBBBUT since you have some NJ related questions (inspection) I will say that Check Engine lights are somewhat fickle and that is about the ONLY thing they check in NJ anymore on cars.

I had one of my cars that never ever wanted to get to the "ready" state so for a while it just wouldn't pass. Got pulled over in a GSP rest area and the cop told me that AS LONG AS you keep going to inspection each month, even if you keep failing they would not write a ticket ($133 advice LOL).

I eventually figured out I had the wrong MAP sensor in the engine, bought a new one for about $10 online and passed.

As far as the P0300 that means a random misfire. First thing i'd do IF it were me would be to clear it and see if it comes back.

Several links and videos on that particular code:

P0300 Chevrolet Cylinder Misfire Detected Random Cylinders OBDII Engine Light Trouble Code | Engine-Codes.com


https://www.youtube.com/watch?v=_92Y8bvO_ww

OBD-II Trouble Code: P0300 Random/Multiple Cylinder Misfire Detected


https://www.youtube.com/watch?v=OyvdWeyDHf4

Only way to easily clear the codes is with a scanner which is either a handheld wired one or a plug that plugs in and bluetooths right to your phone. Or I thibnk you can disconnec tthe battery and reconnect it.

Either way that will make your car relearn everything and after a few hours the code might come back or not.
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