Hi guys. I am just wondering if it is normal to have a gear whine/rub noise while turning in 4 wheel drive. I don't remember my last 2 truck having this noise...of course, that doesn't mean much - I could have been used to the noises.
If you are on solid pavement, and the wheels cannot slip easily, and you are in 4HI or 4LO, then yes, it is normal to have some binding and noise while turning in 4WD, but it would be a BAD THING. 4WD should only be used when the wheels can slip, such as snow, ice, mud, and sand. Never use 4HI or 4LO when the wheels cannot slip some. Using those modes on pavement that is not covered with snow/ice can cause damage to your drivetrain!soslo said:Hi guys. I am just wondering if it is normal to have a gear whine/rub noise while turning in 4 wheel drive.
True, it is hard to tell what road/driving conditions he is facing based on his limited description. That is why I figured it was safer to cover all of the bases.Setemflush said:SS,
I aggree with you 100%. Never ever on pavement unless snow covered or ice. I didn't think Soslo was discribing binding and in my experience there is always some whine in Four wheel drive. Am I wrong on this? I guess it's possible that all 4 of my 4x4's have had problems. Doesn't yours whine?
While my "gear noise" comment was in reference to Auto 4WD, the same applies to all 4WD modes.ShapeShifter said:In this case, there will be a little more gear noise, since the front differential and drive shaft will be turning.
It is a good idea to engage 4x4 occasionaly (every few months?) to distribute the lubrication. If you can't find a grassy/sandy/slippery area to do it, then do it only on a perfectly straight stretch of road, keep your speed down (below 50?) and don't do it for more than a mile or so. Whatever you do, don't take any signficant turns on dry roads with 4HI or 4LO engaged.soslo said:Guys - thanks for the great info. I turn on 4hi (dry pavement) just because it hadn't been run yet (shame shame, I know), and I thought it should be run periodically for lube reasons...but I could be totally wrong. This is my first new 4x4, so I care a little bit more about the sounds and whatnot.
They are very similar. The difference is vague and open for debate. Here is one person's take on the difference: 4x4 ABC. If you click through some links, there is also some explanation of the differences between these systems (like you might find on a Subaru) and our part time system that is typical of full size trucks.bekind said:One question, what is the difference of AWD vs. Full-time 4x4 systems. Aren't these the same thing?