1991 Ford F-150 power train problems
13 owner complaints filed with NHTSA name the power train on the 1991 Ford F-150 — 4% of all complaints for this model year.
What owners report
“Defective automatic transmission, while in reverse, causes vehicle to jerk which may result in a loss of vehicle control. Also, it is too rough to change gears. Dealer cannot determine the cause of the problem. *ak”
filed Sep 29, 1999
“Clutch was replaced by a mitsubishi transmission that came out of a ford ranger truck. The clutch failed to work. The 4th gear went out & can not be shifted. This caused the clutch to be very hard to shift into any gear. *ak”
filed Feb 1, 1999
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Subject regarding contamination from prior transmission concerns or excess wear may be trapped in the transmission fluid cooling system. *tt
002310 · Service Bulletin/Repair Instructions · issued Nov 13, 2000Transmission- e40d/4r100-1989-99-main controls, separator plates and separator plate gaskets usage chart. Yd
98168 · Service Bulletin/Repair Instructions · issued Apr 7, 2000Transmission-e40d-no 2-3 upshift. Some vehicles may exhibit a no 2-3 upshift condition. *ak
98167 · Service Bulletin/Repair Instructions · issued Apr 7, 2000Vehicles may experience solid particle contaminants from prior transmission concerns or excess wear, may be trapped in the transmission fluid cooling system is not properly flushed, fluid in-line filter kit. *mjs
0038 · Service Bulletin/Repair Instructions · issued Feb 7, 2000Information regarding the new transmission cooler flusher- service tip. *mjs
0015 · Service Bulletin/Repair Instructions · issued Jan 10, 2000
Power Train problems in other F-150 years
| Year | Reports | Share |
|---|---|---|
| 2025 F-150 | 23 | 23% |
| 2024 F-150 | 55 | 30% |
| 2023 F-150 | 150 | 38% |
| 2022 F-150 | 155 | 27% |
| 2021 F-150 | 297 | 31% |
| 2020 F-150 | 331 | 47% |
| 2019 F-150 | 701 | 54% |
| 2018 F-150 | 964 | 43% |
| 2017 F-150 | 509 | 37% |
| 2016 F-150 | 542 | 27% |
| 2015 F-150 | 370 | 22% |
| 2014 F-150 | 412 | 27% |
Other reported problem areas on the 1991 Ford F-150
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.