Skip the auto shop - Our mechanics make house calls

Q: Noise under vehicle - 1991 Toyota Land Cruiser

asked by on

Under acceleration , regardless of load or RPM, I'm getting a almost "metal" sound coming from underneath the cab. It almost seems driveshaft or u-joint related. The u-joints are greased and the drive shaft has no play.

It doesn't do it on cold start or driving for first 10 minutes.. Its very odd.

My car has 215000 miles.
My car has an automatic transmission.

A: Hello. Noises like this can make you crazy,...

Hello. Noises like this can make you crazy, often because they are ’transmitted’ from one part of the car to another. Since you have greased the U-joints, I would make sure that the sliding yoke on the driveshaft is lubed as well.

Those splines can become dry over time and miles, are almost always overlooked, and can generate a variety of noises when torque or suspension movement cause the driveshaft to compress or extend. A dab of grease or "dry-moly" lube will do it - a bit on each spline. If you need further help, I would recommend having a professional diagnose the noise in person so that this repair can be addressed accordingly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: When putting foot on accelerator, brake, or shifter, car dies

There are some technical bulletins for replacing the ECU on your 2005 Kia Amanti for drivability problems. With what you said, what they want to do is along these lines. They may be able to reprogram the computer or need...

Q: My car starts and runs but after getting up near 200 degrees it starts to sputter and stalls. It will not restart until it cools o

You will need to see if you have lost spark to the spark plugs after the engine dies. If it did then you most likely have a bad distributor assembly behind the water pump. Make sure you replace the spark...

Q: Turn signal and hazards not working

Hello, thank you for writing in. It is possible that the vehicle could be having a switch or ground connection issue. The turn signals and the hazards are wired separately so that your hazards will work independently in emergency situations....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...