Replaced the oil pump reduced engine power?

2002 FORD F-150

203,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC

TBLACKWELL88

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Replaced the oil pump last year and ever since it seems like it doesn't have the power when accelerated. When in idle it revs up and down and when accelerated the RPMs jumps up and it seems like there's a delay in the gears changing.

Oct 15, 2024 at 11:55 AM

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STRAILER

AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 POSTS

Yep, these problems are related, when the timing chain was replaced the camshaft timing must be off this is why the engine doesn't not have power and low vacuum which affects the transmission shift points. Here are the marks so you can disassemble the engine to check it, sorry.

This video can help:

https://www.youtube.com/watch?v=dler2t2e4Zw&t=268s

Check out the images (below). Let us know what you find.

Images (Click to enlarge)

Oct 16, 2024 at 10:55 AM