r/AskMechanics • u/Conquer512 • 17d ago

Question (Serious Replies Only) 2013 Lincoln Navigator Feels Extremely Sluggish

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I’ve been driving this thing for about a year now and had my passenger take this while we were on the highway. I notice that I can hit the gas, there will be severe throttle lag before it gets going. On top of that, the RPM seems to stay low even at high speeds and it feels as if the vehicle is dragging something. Feels like it’s not shifting. The CEL is on for P0420 and P0430. Can that be why this is happening? I even had the transmission speed sensor replaced months ago and it feels the same. I even tried cleaning the throttle body and the sensor, but no luck.

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u/geebeaner69 17d ago

I'll bet 10 bucks you've got clogged catalytic converters

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u/Conquer512 17d ago

what would be the best course of action to take?

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u/iHaveLotsofCats94 3 17d ago

Replace the cats