Noise question...brainfart Wednesday

[tmcalavy]

Gotta little whine in the drivetrain of my 93 Ranger XLT with 3.0 engine and 2WD. It's there with my foot on the gas, but disappears when I get off the gas...not bad, just noticed it but annoyed that I can't remember the rule of thumb I saw late last year on this forum. The diff is a boneyard replacement and I serviced it when they put it under the truck. I know it's not the tires...which are just about toast. Can anyone jog my memory? Thanx

 

[PanamaExpat]

Sure it is diff whine and not trans? Which trans is in it?

 

[adsm08]

Is it there only when you are moving? It sounds to me, just from the description, that it could be the steering pump.

 

[tmcalavy]

Truck has 106+K on it...trans is the 4-speed OD, and the PS steering pump is okay. To clarify...I hear a slight whine up under the cab at road speed...50+ mph, but only with foot on the gas...whine disappears completely when I get on the gas...and comes back when I get back on the gas. Guess I need to check this with the cruise control on. U-joints are good, carrier bearing for 2-piece driveshaft is new (almost), and I serviced the new (used) diff before it was installed...fresh juice and gasket.

 

[PanamaExpat]

Does it have a carrier bearing?

 

[brokemechanic3000]

sounds to me that it is a bearing in the transmission.