Gear noise inside motor - 1987 Oldsmobile Ciera

is it auto ?? i think you should hope for exaust loose -broken spring on starter motor or the engine back plate cracked

Possibly the gear inside the moyor is stripped.. OR The drive shaft at the motor is stripped or disconnected. .. stripped drive shaft most possible.

Have your motor supports checked. Also the drive shaft could be causing the problem if that knocking is not coming from inside the motor.

The sound you hear is one of the door motors trying to run. It is likely the recirc door motor. So try moving the controls to recirc before you shut it off and if the noise does not occur the recirc motor will need to be replaced. If you already have it on recirc try moving to fresh air before shutting off. The motors have plastic gears inside that strip and will need to be replaced to repair the noise.

you have a bad actuator motor or a broken blend door in the heater box, the noise you hear is the skipping of the gears in the actuator motor, the ehating system along with ac use motors to move doors inside the heater box, the doors control the flow of the air and the temp, you will need to locate the bad one by unplugging one at a time, when noise stops you have the right one, remove it by removing screws that hold it to box. with motor removed look at the hole that controls the door, you will see a small square that the motor turns ,this id part of the door hinge, you should be able to turn side to side, this swings door left and right like a rood door, open or closed, if the door swings good then the actuator is bad, let me get a picture to help you located it, you will located the heater box in the location of the noise, behind glove box, try to acess from the bottom of the dash and also remove glovebox,hope this helps, good day

the casing for the gear drive is coming apart and causing the gear not to catch when it should..Take the drive motor out. Get a epoxy to put it back together. First check the gear inside to see if it got and damage if so replace it

Either the linkage for the wiper arms has come apart or the gears inside the motor are stripped/broken.

gears inside the motor are stripped out and the motor asbly needs to be replaced.

That grinding noise is the starter motor gear not meshing with the flywheel gear most probably caused by a worn starter motor gear or weak solenoid inside the stater motor. You'll have to replace the starter motor to repair the car.

gear wearing out inside lil motor,the only way i could fix was change lil motor 167.oo dollors