It started running bad vibrating like running on a couple cylinders it's a ford f-150
2001 Ford F-150

It started running bad vibrating like running on a couple cylinders it's a ford f-150

(2001 Ford F-150)
its been running great I drove it yesterday bout 40 miles stop at store and when I pulled out of the store it started vibrating sounds like it's only running on a couple cylinders it's never done it before
What seems to make the problem better or worse? it just started doing this I stoped at store pulled off it started vibrating sounds like it's only running on a couple cylinders
How long have you had this problem? just syatef
Tags: ford, f 150
1 answer & 0 comments
Popular Answer
on November 13, 2019
Hello, it sounds like you definitely have a misfire concern with your engine. Is your check engine (yellow warning indicator) flashing or illuminated on your dashboard instrument cluster?

Testing should be performed to narrow down which cylinder or cylinders are affected. If you haven't replied spark plugs in 50,000 - 60,000 miles, it'd be a good idea to replace them now, and replace ignition coil boots also while you're there. You may also need to replace an affected coil if a faulty one (or two or three) is identified during testing.

You did not mention which engine you have; my notes only apply to a 4.6L or 5.4L V6; the V6 will be a bit different. Testing is needed for all of the above regardless.

You could also have a base engine or valve train issue, too hard to know without hands on testing.
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General Diagnosis
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on November 13, 2019
Hello, it sounds like you definitely have a misfire concern with your engine. Is your check engine (yellow warning indicator) flashing or illuminated on your dashboard instrument cluster?

Testing should be performed to narrow down which cylinder or cylinders are affected. If you haven't replied spark plugs in 50,000 - 60,000 miles, it'd be a good idea to replace them now, and replace ignition coil boots also while you're there. You may also need to replace an affected coil if a faulty one (or two or three) is identified during testing.

You did not mention which engine you have; my notes only apply to a 4.6L or 5.4L V6; the V6 will be a bit different. Testing is needed for all of the above regardless.

You could also have a base engine or valve train issue, too hard to know without hands on testing.
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