Q: Truck slightly jumps at high speeds

asked by on

I purchased a used car and it has approx. 96,000 miles. In the beginning, it drove very well, but then after a few days every time I’d remove my foot from the accelerator and then apply gas again, the truck would jump slightly, especially at high speeds. If I would apply the gas slowly, it wouldn’t do it. It was like the transmission might be slipping. I returned to the dealership (Ford) and was told that everything checked out okay. I even drove with a mechanic and showed him the problem, but since the truck is still under powertrain warranty, they don’t want to do anything. They said I’d have to take it to the Honda dealer, which I did. I paid the diagnostic fee to have it checked out. I drove with one of their techs and he noticed the hump after applying gas. After checking it, they explained that it wasn’t the transmission, but instead a Backlash in the differential (or something like that) - and that it was normal for that to happen and wouldn’t be covered under warranty. They said there’s always a bit of play on gear or something like that. That just doesn’t sound right to me. In my thinking, they don’t want to work on it since it is close to the end of the warranty. In your professional experience, what is the problem and what do you think would fix it?

Hello. It is possible that the rear differential is experiencing backlash. Backlash is normal in the differential and every truck will experience this. However, the backlash shouldn’t be so great that it causes the truck to jump. This may be covered under warranty, but if the dealership says that this is normal, they will not replace it under warranty. Another option would be to have the rear differential rebuilt. This option may be more cost effective than having a new rear differential put on the truck.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Truck slightly jumps at high speeds

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: In limp mode following a catalytic convertor repair. Have driven 70 mIles in limp mode.

The only purpose of the catalytic converter is to reduce exhaust emissions. The converter is within the exhaust system and functions as part of the vehicle's emission control system. Excepting only an unusual circumstance where the converter is physically plugged...

Q: Not enough power when accelerator pushed.

A lack of acceleration could be caused by multiple issues. Such as failing spark plugs, failing spark plug wires, failing ignition coils, clogged fuel filter, failing fuel pump, clogged injectors, or possibly even a mechanical issue such as damaged valves...

Q: My car started making noise that sounded like a flock of birds in my glove box.

You need to have your blower motor filter removed and see if it has fallen apart and got caught up in the blower motor. You may need to have the blower motor removed and replaced if it is not any...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...