The car had a blown/locked up engine when I got it. I pulled the engine out of my daily driver and installed it in the other car, it was fine in the old car now it shakes like its out of balance. I have checked all vacuum lines and electrical connections and it shouldn't be the balance r because it was fine in the other car. The idle stays steady where it is suppose to be. I'm stumped!!
Loose engine/transmission mounts.
SOURCE: olds alero 2.4 idle fuel pressure
most likely idle air control sensor or low engine coolant I know sounds funny but IAC uses coolant to regulate idle. Idle air control valve or throttle body positioning sensor.
SOURCE: 1996 Olds ciera, V6, Engine dies when put in drive
Try disconnecting the electrical connector at the transmission and see if it stall when you put it in gear. You will get a service engine light, but not to worry, it will go back out once you reconnect.
By disconnecting the wire connector we can tell if it is transmission related.
Good luck, let me know.
Regards,
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The check engine light is not on and it is not pulling any codes. it runs and drives fine just shaking, also its a little worse when its in gear.
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