I forgot to mention, when I started it initially, it didnt throw a CEL at idle, only when I put it in gear and set off.

Several possible answers come to mind with the Vin data.

Item Number: MB# 0005400072
Main Category: MB
Sub Category: Engine Electrical
Description: Overload Protection Relay-(K40 Relay)
Weight: 0.500
Application list:
C230 chassis: 202.023
C230 Komp chassis: 202.024
C280 chassis: 202.028 from 1997
C36 chassis: 202.028 from 1997
C280 chassis: 202.029
C43 chassis: 202.033
CLK320 chassis: 208.365
CLK430 chassis: 208.370
CLK55 AMG chassis: 208.374
CLK230 Conv chassis: 208.465
CLK430 Conv chassis: 208.470
CLK Conv chassis: 208.474
E320 Sedan chassis: 210.065
E430 chassis: 212.070
E55 AMG chassis: 210.074
E320 4M chassis: 210.082
E430 4M chassis: 210.083
E320 Wagon chassis: 210.265
E320 4M-W chassis: 210.282


* Corrupted module programming ?
* Contaminated fuel ?
* Engine ground strap loose damaged ?
* 2035400253 Transmission Electrical Connection Spacer bad/false signals to computers ?
* 2105451332 gear recognition switch bad/false signals to computers ?
* Camshaft and/or crankshaft position sensor ?

FYI:

# The transmission control unit has been superseded three times.
# The MB# 0265453132 engine control unit has been superseded four times.
# Thee electronic stability control unit has been superseded three times.


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