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misfires, misfires, misfires.

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misfires, misfires, misfires.

 
Old 12-01-2007, 02:32 PM
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Default misfires, misfires, misfires.

I am trying to resolve why my car misfires all of the time. Today I was able to pull off the front of the car and set the crank to TDC. I put a long 1/8" steel rod into the first spark plug hole to figure out where TDC was. I then checked that the mark on the cam sprocket and the valve cover lined up. I was hoping that it would be off, and I could just get it timed up again and it would run well. But it looks like everything is lined up right. I have the crank at TDC and it looks like the cam sprocket and valve cover mark line up correctly.

So what is causing my misfires. Could the cps be bad? Here are the codes I get

VAG-COM Version: Release 311.2-N

Control Module Part Number: 4B0 906 018 CH
Component and/or Version: 1.8L R4/5VT G 0001
Software Coding: 16701
Work Shop Code: WSC 10001
6 Faults Found:
16396 - Bank 1: Camshaft A (Intake): Advance Setpoint not Reached (Over-Retarded)
P0012 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16685 - Cylinder 1 Misfire Detected
P0301 - 35-00 - -
16687 - Cylinder 3 Misfire Detected
P0303 - 35-00 - -
16688 - Cylinder 4 Misfire Detected
P0304 - 35-10 - - - Intermittent
16686 - Cylinder 2 Misfire Detected
P0302 - 35-10 - - - Intermittent


I still have the front off of the car, so if you can think of something else I should check I am all ears.

Let me know, guys.

Thanks

2001 1.8TQMS
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Old 12-01-2007, 04:05 PM
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When did your misfires begin?
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Old 12-01-2007, 08:08 PM
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I bought the car several months ago. It was doing this when I bought it.
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Old 12-03-2007, 03:34 AM
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when do the misfires happen and what plugs are you running?
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Old 12-03-2007, 05:18 AM
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Default Happens at idle, pretty bad too. But with the AC on it is WAY less noticeable.

I am running BKR7E gapped at .028, I have changed them twice to no avail.
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Old 12-03-2007, 05:21 AM
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Default if its happening at idle somethings definetly wrong...

i was getting misfire at part throttle with the 7's. I switched to 6's a long time ago and have never looked back. My car likes them a lot better for some reason.
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Old 12-03-2007, 05:41 AM
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Default I know something is wrong, just can't figure it out. I may take the car in and have a professional

check it out. I'm tired of dealing with it.
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Old 12-03-2007, 05:50 AM
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Check your Cam timing or sensor.
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Old 12-03-2007, 05:50 AM
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Default Cam position sensor??? Cam tensioner? Surely seems to be cam timing related...

and that's causing the misfires.. The ECU thinks the timing is different, so it's firing the plugs at the wrong time, and/or injecting fuel at the wrong time.
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Old 12-03-2007, 06:09 AM
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Default Forgive me for being ignorant

I am new to the 1.8T, how do I check cam timing and cps. I assume to check cam timing I need to remove the valve cover but how do I determine if the the two cams are timed correctly?
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