Hello.

The car is 93' 300E 2.8 California version with 83,000 miles. I'm the second owner.

I've had pretty bad engine misfire since yesterday, so I checked the code.

Here below are the codes I got:

Onboard LED: None
Pin 8 : 23
Pin 14: 11

Then I checked the ignition coils because I suspected them. Fortunately, I was right. #1 ignition coil seemed bad.

Here are the resistance values:

#1 Primary 0.7 Ohm, Secondary 0.575 MOhm (not K)
#2 Primary 0.7 Ohm, Secondary 6.8 KOhm
#3 Primary 0.7 Ohm, Secondary 6.8 KOhm

Now, I have a question. The OBD module told me #2 ignition coil was wrong, but I got a different result.

Can anybody explain?