My truck will not accelerate correctly

Tiny
DBLEVINS93
  • 1999 FORD F-150

I drive a 1999 Ford F150. And loses ability to accelerate at all once hitting 45 mph. Any idea was what to could be wrong?

I have been having this problem lately where my truck won't accelerate like it should. It feels like it is missing. Also once I hit 45mph in my truck, I lose all ability to accelerate and have to let it drop down to 25 mph or below before I can accelerate again.

My dad thought it might be a spark plug issue but after replacing the spark plug, the problem is still persistent.

Do you
have the same problem?
Yes
No
Saturday, July 21st, 2012 AT 9:51 PM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,525 POSTS

Start with a fuel pressure check. Spark would be next and then compression.

Bad cat converter would also cause the issue

Roy

Was this
answer
helpful?
Yes
No
Please consider a donation if we helped you
Saturday, July 21st, 2012 AT 11:26 PM

Please login or register to post a reply.

Related Engine Low Power Questions

Recommended articles