Pontiac Grand Am
Timing Belts and Chains
Watercraft Engine Maintenance

How do you know if the motor in a 1991 Grand Am is locked up?


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Wiki User
2015-07-15 20:07:39
2015-07-15 20:07:39

Try turning it by hand with a socket over the crankshaft damper bolt and use a breaker bar.


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A motor that is locked up cannot make a rotation. The motor will not turn over or start. Try to turn the main pulley. When the pulley cannot be by just, the motor is locked up.

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Remove all the spark plugs. If you cannot turn the engine over by hand with a socket & ratchet, it is locked up.

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As far as I know, there was a recall regarding the washer fluid motor.

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You need to first know the wattage of the motor and locked rotor current can be tested at a lab only

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Depends, I know they have 2.0 and 2.1 for the 91 prelude.

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