Hey, my name is Luke! I just bought a 92 Pickup v6 4x4 with 83,000 miles and I am in love with the dam thing. Best first car I could buy! I am having problem though. Whenever I am driving, shift the car into neutral and come to a stop. The rear end will shake, and I will see the rpms go up a little bit than come back down to normal idle speed? If you guys/gals have any input that would be greatly appreciated, also let me know if you have any other questions! Thank you!

 

Welcome Luke! Can you explain better what you mean by "the rear will shake"? The idle surge may be a separate issue, but I am unfamiliar with the V6.

 

So when I come to a stop, I can feel the rear end rumble, and can hear almost a grinding noise (Im sorry I don't know how else to explain it) ? The idle surge is not that drastic it goes up to 1000 rpms than falls back down to normal idle speed. All this happens for 3 seconds than returns to normal. Love your truck by the way wanna get stock alloys for mine!

 

Thanks! I do plan on getting them refinished as one of the last steps in my restoration.

Is your truck lifted? Stock size tires? Manual transmission?

I would check the level and condition of your rear diff fluid. Any metal in there? The magnetic drain plug can tell a lot of the condition of your diff. A little creamy gray matter is fine, but chunks of flakes are not. Also, check for excess play in the u-joints & raise the rear and listen for noise when you rotate the driveshaft. Also while it's up, see how much play you have when rotating the driveshaft before a wheel starts turning. Also check the play on the output shaft of the tranny. And also while you have the truck up, check the rear wheel bearings: Rotate each wheel and listen for noise, feel for grinding and check play.

If you don't have good maintenance records from the PO (Previous Owner), you should probably change all fluids. Make sure you use the proper fluids: GL4 in the tranny (assuming it is a M/T), GL5 in the diffs & transfer case, ATF for the steering...

 

Hey thanks for the input this will defiantly point me in the right direction! It is a manual and has a little bigger tires with after market bilsteins. I just turned 18 and am gonna try to start working on my own truck so this definitely helps out a lot! Im gonna go over all of this stuff tomorrow!

By the way what tire size and lift are you running on your truck?

 

The PO turned up the torsion bars and must've changed the leaf springs. It rode like a rock, so I lowered the torsion bars a bit but couldn't go too far since there's nothing I can do easily to lower the rear. I would guess a 1-1.5" lift? Tires in picture are stock 28", but I am going with 31x10.5 on the stock alloys, it will look so much better with 31s.