Interment bucking under acceleration - Ford F150 Forum - Community of Ford Truck Fans

Go Back  Ford F150 Forum - Community of Ford Truck Fans > Pre-1997 F150 > 1987 - 1996 F150
Interment bucking under acceleration > Interment bucking under acceleration
Topic Sponsor
1987 - 1996 F150 Still running strong! Talk about your 8th and 9th generation Ford F150 trucks.

Interment bucking under acceleration


Old 09-13-2017, 08:31 PM
Junior Member
Thread Starter
Join Date: Sep 2017
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default Interment bucking under acceleration

91 f150 Custom, fairly certain it was a former city truck from up north.

Its passed through several owners, and I didn't ask many questions when buying it, it was dirt cheap.

That being said its got this bucking that happens when I push on the accelerator hard, seems to happen more often when its lower on gas. It also nearly dies then revs on cold start in idle. The check engine light isn't on currently, although it randomly flashed the check engine light two times nearly a year ago

The transmission fluid still looks good, and I drained it and refilled it a year ago on friend advice. It lacks other basic transmission symptoms so I may be missing a really obvious need for a trany rebuild.

I've replaced the fuel filter, and dropped the tank and cleaned it out (although this appears to have been unnecessary as it was super clean). Replaced the spark plugs and wires.

Has anyone else had this specific problem? Ideas?
Kmelino is offline  
Reply With Quote
Old 09-14-2017, 01:11 AM
Senior Member
Join Date: Dec 2014
Posts: 707
Thanks: 0
Thanked 103 Times in 103 Posts

I would put a container of fuel injector cleaner in the gas tank. Just follow the directions on the container.
88xlt is online now  
Reply With Quote
Old 09-14-2017, 08:26 AM
Senior Member
BLDTruth's Avatar
Join Date: Jun 2015
Location: Oregon
Posts: 1,988
Thanked 295 Times in 267 Posts

I would measure fuel pressure. Does it have two tanks? If so do the symptoms persist on both?
BLDTruth is offline  
Reply With Quote
Old 09-18-2017, 12:52 PM
Junior Member
Join Date: Nov 2016
Location: Beautiful Beaufort, SC
Posts: 19
Thanked 3 Times in 2 Posts

Have a look at the Throttle Position Sensor if the other ideas mentioned do not solve the bucking. The sensor is mounted under the intake hoses on the throttle body. The part is $60 locally but dirt cheap at Rock Auto.
stxlt is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: