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Old 01-23-2014, 08:56 PM   #1
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Vibration issue

I have a vibration in the steering wheel/column at high idle and at about 1500 rpm. Nothing is contacting the frame that would cause vibration. My motor mounts are tight, I have the correct flexplate and the harmonic balancer isn't spun. My last guess is the trans mount is bad. Has anyone had this issue in the past? Is there any way to test the harmonic balancer to see if it's bad? I don't want to throw money at parts and just hope it works, thanks in advance.
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Old 03-12-2014, 09:08 PM   #2
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Originally Posted by BA68 mustang View Post
I have a vibration in the steering wheel/column at high idle and at about 1500 rpm. Nothing is contacting the frame that would cause vibration. My motor mounts are tight, I have the correct flexplate and the harmonic balancer isn't spun. My last guess is the trans mount is bad. Has anyone had this issue in the past? Is there any way to test the harmonic balancer to see if it's bad? I don't want to throw money at parts and just hope it works, thanks in advance.

Would think you could take harmonic balancer to machine shop and they may be able to see if it's true??? I would probably take wooden stick ( like cut off broom handle ) and hold it on engine in different areas while idling to see if it's greater in one area verses another, then dig deeper from there
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Old 03-12-2014, 09:21 PM   #3
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Did you check the motor mounts for separation. They get old and the rubber separates from the steel or people use the oil pan to jack up the front of the car and tear the rubber. so they can be tight but not connected, if that makes sense. I've had that and the engine torqued, rotated up a little and the fan cut my upper radiator hose.
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Old 03-13-2014, 05:31 AM   #4
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I tracked it down to the incorrect flexate, someone had a 0 oz on and I needed a 28.2oz. It's silky smooth now thanks though
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