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truck problem

2001 f150, had a tune up done, new plugs and new coil pack on clinder 3 and still runs bad, if it gets up to 45 mph and I let the rpm come down and then lighty accelerate the truck shakes, what could be wrong

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Steve Beson
Pinconning MI

Check your drive shaft u-joints.

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Bill Harper
Washington, NC
252-944-5592

Is the check engine light on?

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truck

Is it misfiring at all?You said you had a tune up done.But one of the plugs could be bad.Or if it is a 4x4 you front drive shafts could be going bad.

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John
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I would just buy a Chevy!!

u joint if it shakes thru ur butt, through the steerin wheel check tie rod ends, cv-s etc. trust me, need more info though is it actually runnin smooth at an idle, and at speed. difference in shakes.

'Pr' branchville mtn banjo man

more info, motor shake, check the air filter, wont let enough air thru to the injectors to run right. fuel filter, missin. go to a advanced auto or somewhere where they will put on computer for free and have it checked. could be a sensor.

Re: truck problem

quote:

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Originally posted by RRbluehound
2001 f150, had a tune up done, new plugs and new coil pack on clinder 3 and still runs bad, if it gets up to 45 mph and I let the rpm come down and then lighty accelerate the truck shakes, what could be wrong

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quote:

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Originally posted by Aaron Hackenber
I would just buy a Chevy!!

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tune up man possibly put plug wires on wrong also need to replace distibutor cap. Have seen hair line cracks in them do exactly what your talking about

had a new air filter put in, it is a 5.4 motor each clinder has its own coil pack, dont think that the wiring could be wrong, It only shakes 40 to 45 mph, I can feel it through the pedal, I almost think that the coil pack that was replace is bad also, but I called the mechanic back to look at it again, just hope it isnt something expensive to fix

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Steve Beson
Pinconning MI

quote:

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Originally posted by Aaron Hackenber
I would just buy a Chevy!!

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tires

rotate and balance tires can u feel in steering or just pedal

tires should get balanced, but it only does it when rpms are low, and then accelerate and the motor doesnt feel as strong

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Steve Beson
Pinconning MI

quote:
--------------------------------------------------------------------------------
Originally posted by Aaron Hackenber
I would just buy a Chevy!!
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For what so could have even more problems?

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If you can't run with the big dawgs keep your puppy a$$ on the porch.

did it shake before the tunup

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they truck ran fine than out of the blue was running ruff, took it to get a tune up, took it home, samething, brought it back, he said the computer said the coil pack on clinder 3 was bad, he change it and now it is still running bad

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Steve Beson
Pinconning MI

Water in fuel, Try a can or two of Heat.

IF HE PAYS TO HAVE EVERYTHING REPLACED OR REPAIRED THAT YOU SUGGEST ON HERE HE MIGHT AS WELL JUNK IT AND BUT A NEW TRUCK OF HIS CHOICE.

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Make sure the plug wires are snapped on good,had a 97 with a plug wire that felt like it snapped in place but it would vibrate back off .

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Chris Zink (573)714-3129

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I have the same truck and mine did the same it was the limited slip clutch in the rear end it's common in that year 97-03 have someone look under it when you put it in gear you will see the drive shaft will turn sevral turns before it grabs, rear end need rebuilt remeber tell the person looking not to lay under the truck they can see it without being under it lol. they realy aren't slipping like a tranny would they just have clutch chatter(vibration when deacceleration or vise versa)

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Allen Rosenbarger

COULD IT BE SOMETHING FUEL RELATED?

IS IT AN AUTOMATIC? COULD THE TRANNY BE SLIPPING? THAT COULD BE WHY IT GETS TO A CERTAIN SPEED/RPM IT SHUDDERS.

MAYBE YOUR TIMING IS OFF?

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quote:

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Originally posted by AllenR
I have the same truck and mine did the same it was the limited slip clutch in the rear end it's common in that year 97-03 have someone look under it when you put it in gear you will see the drive shaft will turn sevral turns before it grabs, rear end need rebuilt remeber tell the person looking not to lay under the truck they can see it without being under it lol.

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call me i have worked for ford for 29 years/ i will walk you through the repair. to try to get it resolved. the best advice on here was get a chevy so faar. yes i was a die hard ford man but the fact of the matter is aafter around 93-94 it has all been junk and i will not drive another until they do something about it. not tryinng to start anything just telling the truth/if you saw what i did day in and day out you would have the same opinion/anyone that needs help feel free to call 571-233-5819