Q: Can bad U joints cause engine vibration

asked by on June 26, 2017

Engine vibration, shakes on upper rpm,45to50,already cleaned throttle body,fixing to replace plugs,machine says,Misfire piston5?

My car has 318000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. The misfire is likely the cause of the vibrations you are feeling. When just one cylinder is having a misfire, you may have a bad spark plug, a weak spark due to a failing coil, an issue with the spark plug wire, or an issue with the valves. With that being said, the spark (ignition) system is easy to check. You need to check the spark plug itself, the wire, and the power supply going to the spark plug. You may also need to check the valves. This can be hard to do, but if they are dirty or sticking then fuel system cleaner may help. For more assistance with diagnostics and repairs, contact our service department to schedule an appointment.

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

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

I have a 2003 Nissan Altima 2.5L 4 cylinder. I replaced the fuel pump, the engine coils, and the crankshaft sensor but the car sti

It is possible that there could be an issue with the timing on your vehicle. I would look into the timing belt maintenance to determine when the last time the timing belt was replaced. If the timing belt has skipped...

How much to install rods and pistons

Hi Kent. Thanks for contacting us today. Unfortunately, internal engine rebuild service is not one our mobile mechanics offer. Installing new pistons, rings, connecting rods and others requires machining the engine block first, which is something that should be done...

Convertible not working.

Hi. If your top will not longer move up or down it can be from a number of items in the system from a fuse, to a wiring issue, to the lift motor. The most common part that I have...

Related articles

The Best Used Cars to Buy If You're a General Contractor
If If you're a general contractor, you probably aren’t in the market for a used car. More likely, you’re looking for a pickup truck, because you need to haul equipment and supplies to various job sites. Most contractors will likely...
A Buyer’s Guide to the 2012 Dodge Ram
While While Chrysler has decided to give Ram its very own division, it seems impossible not to think of the Ram 1500 as a Dodge. After all, you’ll still buy your 2012 Ram at a Dodge dealer, and it remains...
Symptoms of a Bad or Failing Axle CV Shaft Assembly
Common signs include loud clicking noises when turning, grease on the inside edge of the tires, and excessive vibration when driving.