Slow acceleration

1991 CADILLAC FLEETWOOD
102,784 MILES • 4.9L • V8 • 2WD • AUTOMATIC
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EVERETT NORMAN
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  • 1 POST
when taking off , the transmission,under ride the engine.
Oct 28, 2019 at 11:01 AM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Hello,

It sounds like you may have a clogged catalytic converter. To be sure here is a guide to help confirm the issue:

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

This guide can help as well:

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

Please run down these guides and report back.
Oct 29, 2019 at 11:09 AM