I own a 4wd blazer 1999, have new tire and fron wheel suspension system was recently repaired and aligned. When you start driving , you feel that wheel are loose, turn to the right or left without control.
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Hello, If this is a front wheel drive vehicle, the rear wheels may be adjustable and need alignment. You would ask for a 4 wheel alignment at a Repair facility. You need the same tools and alignment rack that normally handles front-end alignment.
Next, there is also a suspension system that allows the rear wheels to tip the wheels in order to stabilize the added weight you may be carrying. Sometimes when you lift the rear wheels off the ground it takes several miles of driving before the suspension recovers and makes the wheel straight again.
Sometimes you can get free estimates for Repair work on alignment work. You need to take it in because even if you replace parts that are worn, you should get a new alignment.
loose lug nuts
wheel out of balance; weight fell off
incorrect tire pressure; over pressure can damage the tire
faulty tire;out of round, tread separation, etc
loose wheel bearing
worn shock absorber
worn steering / suspension component; bushing, tie rod end, ball joint, etc
You can rotate the tires, front to back to see if the problem follows the wheels or is a front end only problem.
Sound crazy, but alot recommendations say thet when you pass from Hi to Lo must insure that you have foot on the brake pedal.
Loss of vacuum engages the front hubs; other for no 4 wheel drive and no indicator light. Go home pulled all the fuses
that had to do with the 4 wheel drive system, put them back in and 4
wheel seems to work fine now. And no there were no blown fuses.
I recently had same case and it was a
bad electric motor on the transfer case (31000 miles). The 4x4 light
wouldn't even light up or engage so I would lean towards it being
something different on your end.Also, could be the actuator pin or w/e the little plastic piece is that
engages the 4LO might be broke, or maybe a couple of other things.
Could be many many things, from an alignment, to tire balancing to suspension or driveline problems. If you're feeling it shake in the steering wheel while driving, that eleminates driveline problems and you can focus on the other issues.
If you are in 4WD, and not on a slippery surface, the tires may be having an effect called "scrubbing" where the tire on the outside of the turn is not rotating at the same rpms as the tire on the inside of the curve. I have noticed this on my jeep wrangler in 4wd.
Using 4wd on dry or non-slippery surfaces can cause this problem, and also will cause excessive tire wear.
Try the same manuever on a gravel road or a ice patch (it's been in 90s here in Texas, so good luck on that one) and see if it is improved.
Also, would probably expect a little more effort to steer when in 4wd because the universal joints or CV joints are not in perfect alignment during a turn.