Engine Performance problem
1994 Toyota 4Runner 6 cyl Four Wheel Drive Manual 150000 miles
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I recently had my engine replaced with a used, low mileage, engine. Anyway, it has very little power going uphill. Even the smallest incline seems to be a challenge and there seems to be a slight lag between 3,500 and 4,000 RPMs. Also, in 5th gear it tops out at 65 MPH like it has a governor on it. Toyota dealer tells me I need a new clutch but none of these symptoms appeared before the new engine so I doubt the clutch went bad during the engine swap. It's got new plugs, wires, filters and timing belt. Any ideas?

Hi covbtd,

If the rpm is not racing, then should not be a problem with the clutch.

I would suspect the timing belt, installed out of sync.