Hi, I have a 2011 Ranger Sport that has a vibration I can’t pin-point. It only happens so far that I’ve noticed when driving around 65 on the highway. Feels like a harmonic vibration that comes and goes. It’ll vibrate for a ½ mile or so then go away for a mile or 2, and come back for another short time frame. Initially I thought it was a tire out of balance so I took it back to the dealer and they rebalanced all four wheels, drove it… still did it. Rotated the wheels, still did it. They swapped wheels with another Ranger Sport and it still did it. They said Ford does not have any notices out on the problem but will keep an eye out for one and keep me informed. Anybody have a thought as to what it could be. I don’t drive on the highway this time of year often, but don’t want to ruin anything if I do. Thanks for the help - Don

could be an out of balance driveshaft

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2021 F150 5.0 Screw

Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0

Master Certified Ford Parts / Warranty Admin

I know some engines have harmonic balancers on the lower pulley..not sure about the Ranger engine but on some Ford 4.0's, in Mustangs, there was a recall on this balancer.

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2008 Ranger XLT 4X4 V6 4.0 Torch Red
Bought September 29, 2011 mileage 13,800 2nd owner

Mods:
Retractable Truck Stake Pocket Anchors...installed 10-5-11, AVS Window Vent Visors, 10-6-11,Tonneau Cover, 10-15-11, Alarm/remote start and locks, 10-25-11, Bed Lights 11-13-11, front mud flaps 11-20-11, deer whistles 11-25-11, brake lite Ford emblem 12-7-11

Probably the only way to check that is to remove the drive shaft isn't it... Don

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Being a new Ford owner, I'm not up on Ford motors and what interchanges with what... are the harmonic balancers common to both?
Thanks, Don

well aside from a few changes the 4.0 in the 05-10 mustangs is the exact same thing as the ranger...and the 4.0 rangers do have a harmonic balancer

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2021 F150 5.0 Screw

Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0

Master Certified Ford Parts / Warranty Admin

Is there a sure way to tell if it's the same so I can go in and ask them to change it out or...? Thanks for all the info - Don

just take it in and ask about the harmonic balancer

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2021 F150 5.0 Screw

Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0

Master Certified Ford Parts / Warranty Admin

That'll work... Thanks, Don

Plus, it's under warranty and the vehicle isn't operating properly. Demand that they find the problem and fix it. It's a brand new vehicle, it shouldn't be having any issues already.

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Sgtsandman's Work in Progress
2011 Ranger XLT, 4X4, 4 door Super Cab. 4.0L, 5 Speed M50D-R1HD, 3.73:1, 8.8" open differential, Jason Pace cap
2019 Ford Ranger STX FX4, Super Crew, 2.3L Ecoboost, 10 speed automatic, 3.73:1 with rear locker, Leer 100XR cap