t-rav

Hey, im hoping for a little info if possible. I have a 1989 toyota pickup 22re manual 4x4 that was sitting for roughly 4 years. After finally getting the fuel pump etc fixed and the truck at least running. I noticed when I drove it both my rear end tires are engaging like they would in 4 wheel drive. Ive tried everything to disengage but have been unsuccessful. When i put it in 4hi it drives the same and nothing clicks over. Prior to locking in place there was weird knocking noise and then a couple loud bangs that shook my whole truck. Then it was stuck.

thanks in advance and much appreciated.

millball

You do not describe your issue well. Will the truck move under power in 2wd??

scope103

You have a rear-wheel-drive vehicle. Nothing you do SHOULD disengage the rear wheels.

So, like millball, I think you've left something out of your description. Remember, we are not there, your words are all we have.

t-rav

My apologies, its a 4x4, manaul locking hubs on the front. Essentially when i drive in 2 wheel drive and make any type of turn fast or slow my rear end chirps. It sounds and feels like when you're in 4 wheel drive trying to turn on pavement. Not an expert but i would think when you my a turn 1 wheel will slow down or speed up to make a turn. This feels like there going exactly the same speed when turning. If that doesnt make sense ill try to get alittle video or something.

thanks again.

t-rav

yes the truck moves in 2 wheel drive. But when i turn the rear end chirps and kinda almost hops like if you're in 4 wheel drive on concrete make a turn.

scope103

Yup, sounds like a stuck differential. Jack up one rear wheel, put it in neutral, try to turn the wheel. It SHOULD turn, with the other wheel motionless, and the driveshaft turning as you turn the wheel.

t-rav

ill give that a shot, thank you!

millball

Was it your truck before it sat??? What do you know about this truck???

Maybe it's got some sort of locker in the rear, or someone has welded the differential up solid????

Sam Latone

You’re confusing 4wd with a locking differential. Not all 4wd systems have locking differentials and your truck did not come with a selectable locker from the factory. Maybe the previous owner installed an “auto locker.”

Jack up the rear and try to tests as mentioned. If it’s not an auto locking differential and you need to replace the 3rd member, it is VERY easy to do. Lot so of information on replacing a 3rd member on here. If you end up changing out the rear ended it may be a good time to upgrade to 4.56 or 4.88 gears if you want to run 32s or 33s.