something is loose . try tighening every motor mount bolt and frame bolt .gm jim Probably the repair technician was not completely qualified to repair transmissions and was just a "friend" of the family or something and didn't do the job right. You should probably have brought the car to someone who specializes in transmissions and has a good rep. As far as the sound goes, does it happen all the time or just on 280 going up the big hill. There are some Aamco transmission shops near Rockaway so you could drop it off before work. Hope this helps..... Check to see if the engine is properly aligned. If it is too far to one side or the other, the CV joints can cause noises. Improper alignment can also cause major damage to the CV joints. Have the U-joints been damaged? Properly reassembled?
When you push the pedal further to make your car stop. When you hear a grinding noise when brakes are applied. When the vehicles pulls left or right when brakes are applied. When the brake fluid reservoir is low or empty. When you feel a pulsation in the brake pedal when brakes are applied. When the brake pedal feels mushy when brakes are applied.
Assuming we are talking about "S" cam air brakes on a truck, check the angle at the end of the slack adjuster to the actuator rod coming out of the air brake can when brakes are applied, it should be 90 degrees, if the slack adjuster is manual adjust it with the brakes not applied and then test again. If they are automatic slack adjusters and you do not have 90 degrees with brakes applied it is worn out or not installed correctly.
Air pressure within the air braking system of a tractor-trailer (or large truck) is what prevents the brakes from being applied. The pressure of the air pushes back a large spring at each wheel. The large spring will apply the brakes when there is no pressure in the system. When the driver steps on the brake pedal, air is released out of the system and the brakes are applied. When the driver's foot comes off the brake pedal, air is quickly pumped back into the system and the brakes are released. Disconnecting the air line has the same effect on the trailer's brakes. Air is released from the system, and the brakes are applied. It is not the brakes themselves that lock. Application of the brakes causes the wheels to lock.
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