Sluggish off the line but strong as bull past 2000 rpm
05-13-2019, 10:01 AM
#1
Junior Member
Thread Starter
Join Date: Sep 2018
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
Sluggish off the line but strong as bull past 2000 rpm
Hello all I have a 2003 f150 supercab and it is equipped with the 5.4 and have the 3.73 gears (or whatever axle code h happens to be) and I bought this truck with 188,000 on the clock with a new transmission and had been maintained well. But, of of the line my foot goes to the floor and it feel like for a second the brake is on it struggles to 2000 rpm and takes of like a bat out of hell. I was wondering if annone has some insight before I went buying sensors and parts. Thanks a ton. In the beginning I installed short tube headers and a k and n intake, new plugs and been seafomed. This helped with my mid range and that is about all.
Last edited by Evan Harich; 05-13-2019 at 10:17 AM. Reason: Forgot to add
05-16-2019, 07:49 PM
#3
Senior Member
What is the engine reving at off the line? DO NOT START BUYING SENSORS! Connect a scan tool, check for codes, look at fuel trims. Let is know what you find.
05-18-2019, 10:31 AM
#4
Gone Golfin
iTrader: (3)
Without being there.... it sounds like the torque converter.