Sluggish performance

1991 MERCEDES BENZ 350SDL
173,180 MILES • 3.5L • 6 CYL • TURBO • AUTOMATIC
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CJM2646
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  • 1 POST
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?
Oct 31, 2017 at 10:17 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,051 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

Nov 2, 2017 at 7:15 AM
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