F150 jerking while driving - Engine Troubleshooting


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F150 jerking while driving

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

Brian51
New User

Apr 10, 2011, 10:00 AM

Post #1 of 7 (5914 views)

F150 jerking while driving	Sign In

I have a 1989 Ford F150 with a 300 6 cylinder, it has about 90 thousand miles on it. Lately it has a problem with jerking and bucking while I'm driving. I think it's a sensor problem and not the transmission. It starts and idles okay. I haven't changed anything in a good while. I did install a IAT several years ago.

way2old
Veteran / Moderator
way2old profile image

Apr 10, 2011, 4:29 PM

Post #2 of 7 (5885 views)

Re: F150 jerking while driving	Sign In

I guess the first thing I would suggest is possibly a tune up including all filters.

Being way2old is why I need help from younger minds

Brian51
New User

Apr 11, 2011, 9:33 AM

Post #3 of 7 (5851 views)

Re: F150 jerking while driving	Sign In

It has been tuned and all filters changed. I read that the thermostat could be the problem, if it's stuck open. It causes the engine to run rich because it never warms up enough. I changed the thermostat yesterday and the truck seems to be running fine, but the weather has also warmed up. I guess I'll have to wait and see. Thanks

techforfree
User

Apr 13, 2011, 9:57 AM

Post #4 of 7 (5830 views)

Re: F150 jerking while driving	Sign In

Stay away from the thermastat & sensors..likely a set of plugwires will cure the problem.

Brian51
New User

Apr 16, 2011, 1:59 PM

Post #5 of 7 (5814 views)

Re: F150 jerking while driving	Sign In

Plugs and wires are new. The weather turned a little cooler in the mornings. It's jerking some but not like it was. I think maybe the MAPP sensor.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 16, 2011, 2:46 PM

Post #6 of 7 (5809 views)

Re: F150 jerking while driving	Sign In

If you think you already know what the problem is and you disagree with the opinions you get, why are you asking us?

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 17, 2011, 2:43 AM

Post #7 of 7 (5803 views)

Re: F150 jerking while driving	Sign In

Sounds like a marital problem

Wrong site,

T

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