My brother had an 85 190e 2.3 and the cat got plugged up, car was smoking and had no power.

I think I would look into the cat to see if its ok.

Thats my opinion on it, and I'm not a tech.

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U