Sluggish performance

CJM2646

MEMBER
1991 MERCEDES BENZ 350SDL
3.5L
6 CYL
TURBO
AUTOMATIC
173,180 MILES

My car seems to have an issue accelerating with any sort of speed. Also, on the highway, I have a hard time passing someone if I am going over sixty mph. Any suggestions?

Wednesday, November 1st, 2017 AT 5:17 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,909 POSTS

It sounds like you have a partially plugged catalytic converter which will restrict the exhaust flow causing low power.

Here are a couple of guides that will help us find the problem:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

and

https://www.2carpros.com/articles/engine-has-low-power-output

Please run this test and get back to us so we can keep helping you.

Cheers, Ken