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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 11-26-2004, 04:19 PM   #1 (permalink)
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Hi everyone i'm kinda new to the forum and so excuse me if this is a repost. But I own a black 1997 m3 E36 and there have been a couple of problems.

First off the Check Engine light has been on for the past couple of weeks. I went to auto zone to check up since they have a free check thing. They told me there were 3 problems. P0442, which reads that there is a small leak in the evaporative emission control system (AKA the gas cap being loose too) P1250, which reads a PRC Solenoid Circuit Malfunction. And P0306, which reads that there is a misfire in cylinder 6. At first this game me no problems, but eventually this has caused a number of problems. I seem to have noticed that there has been a slight studder at 3-4000 RPMs. The engine seems to sputter and lag for a split second before getting into the high revs. I went to my local BMW dealership and just went up there to ask what I should do and he said try changing the spark plugs. And they recommended Bosch platinum +2. So we went to autozone once again and bought the spark plugs and installed. The car ran the same and so we are left with this. I just would like some help on what to do here

Here are the symtoms.

1.The car studders around 3-4000 RPMs every time, every gear.
2. After driving the car fast, the studdering appears to happen throughout all the RPMs.
3. After turning off the car, and waiting about 5 seconds or so the car seems to go back to normal and drive like its brand new.
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Old 11-27-2004, 11:04 AM   #2 (permalink)
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OEM plugs only. Period.
One guy here spent hundreds of dollars (I think it was 500 soemthing) trying different plugs when his engine stright up REJECTED them one after another. (shook, stuttered, etc) Then he put OEM plugs in and it immedately started running beautifully. He knows what he's talking about too. Jilphan is his username I believe.
You need copper cores at least if you decide not to go OEM, but go to the dealership and buy the plugs there anyways. There's a huge debate about it and search the forum for some previous threads to read up on the information and less people had any trouble with the OEM plugs than any NGK or Bosch aftermarket plug. Some people ran fine with +4's etc. I wouldn't experiment unless you have changed the ignition system to something more powerful.

Solenoid circuit malfunction, sounds like your coilpacks.... I do not really know for sure but that's what it sounds like to me.

Other than that, I can't give you any solid advice.
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