C-Class (W202) 1995-2000: C 200 CDI, C 220 CDI, C 270 CDI, C 180, C 200 K,C 230 K, C 220, C230, C 280

Codes P0300, P0301, & P0303 etc... HELP!!!

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Old Oct 18, 2018 | 04:51 PM
  #1  
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kompressor, c230
Codes P0300, P0301, & P0303 etc... HELP!!!

I have a 2000 c230 Kompressor (W202). It has 175,000 miles.

I was passing a car yesterday and gave it some gas to get by and the check Engine light came on. It drove very rough and badly after the Check Engine light came on. I got it home and checked the codes. There was one code, P0301.

I did a compression check:
Cylinder 1 psi: 160 & 155
Cylinder 2 psi: 130 & 135
Cylinder 3 psi: 160 & 160
Cylinder 4 psi: 120 & 120

I then installed new spark plugs and spark plug wires (I had bought some a month back, hadn’t installed them yet).

I then changed the places of the two coils. I put #1 & #2 coil where coil #3 & #4 was, and vice versa.

Now I have five new Check Engine codes: P0300, P0301, P0303, P0300 P, & P0301 P.

Anyone have any advice or answers. Thanks in advance.

Vegas

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Old Oct 18, 2018 | 05:55 PM
  #2  
khomer2's Avatar
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From: Westcoast/Interior
02w163ML500 / 97w210E50AMG / 99w202C230k / 95w124500e-wip
Have you checked your MAF?
What about your cats? any rattling noises when you start the car?
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Old Oct 21, 2018 | 01:20 AM
  #3  
vegastud's Avatar
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kompressor, c230
So an update.

When I swapped the coil packs it triggered more Check Engine codes. My guess was the coils were bad. I bought two new coil packs from Autohausaz, installed them and my C230 is running well again. Problem solved.

Thanks for everyone that responded
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Old Dec 16, 2018 | 08:00 PM
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From: keswick, on
1999 C280
I had the same problem with my C280, I didn't swap coils but found the misfire on #4 and replaced the coil, worked like a charm no further issues
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