C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Mar 30, 2008 | 11:30 AM
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Default Jolting gear!!!

Hey, my car sits and i start it everyother day. When i take it out to move it around once in a while the shift to reverse is sharp and loud. almost like a bang. What could this be?
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Old Mar 30, 2008 | 11:33 AM
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Might be slop in one or more of the six U-joints. If bad luck prevails it might be slop in the rear end.
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Old Mar 30, 2008 | 11:38 AM
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Assuming you have an automatic, this is a fairly common trait of the C3's. However, without actually feeling the sensation, it's difficult to tell. Be sure your idle is set properly. As a side issue, be sure to fully warm your car up as short trips are very hard on an engine. Also, it is not necessary to start it every other day. Once a month or so take it for a half hour drive and get it up to operating temp.
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Old Mar 30, 2008 | 01:26 PM
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Check the front diffrential bushing.
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Old Mar 30, 2008 | 01:47 PM
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There is a 'snubber' bushing at the differential that keeps the diffy from banging around when you reverse the torque to it. The rubber 'snubber' is probably worn out so that there is too much slop in the system. It's an easy fix.
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Old Mar 30, 2008 | 01:56 PM
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If the idle is set up too high, merely shifting out of park or neutral will or could cause what apparently your describing. Bad on U-joints. Normal idle is 5-550 or less.
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