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Old 12-13-2010, 11:42 PM   #1
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what would cause a slight vibration at idle in gear,put it in neutral and it goes away?
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Old 12-13-2010, 11:43 PM   #2
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does it matter if the car is warm cold has ben driven has not...hows your trans fluid..harmonic balancer any rotating parts..
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Old 12-13-2010, 11:50 PM   #3
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I'd check you engine mounts
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Old 12-13-2010, 11:54 PM   #4
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how much play should be in the rear mount,i put a pry bar on the mout and moved it.little play but it was not ripped,how many mounts are there?..3?
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Old 12-14-2010, 12:06 AM   #5
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I'm not sure on the 00+ H-body. I check my mounts this way. Have a friend trans brake in forward and reverse and watch for excessive engine rocking.
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Old 12-21-2010, 12:12 PM   #6
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Quote:
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what would cause a slight vibration at idle in gear,put it in neutral and it goes away?
Iac sensor under the throtele body clean and try before replaceing
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Old 12-21-2010, 12:22 PM   #7
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Quote:
Originally Posted by Nighthwk12 View Post
I'd check you engine mounts
x2

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Iac sensor under the throtele body clean and try before replaceing
A bad IAC Sensor would not cause an engine vibration. It would cause a rough (bouncing) idle. Also, a bad or gummed up IAC sensor would cause that symptom regardless of whether or not you're in gear or neutral. The fact that he'* having this problem in gear and not in neutral is a telltale sign that his engine mounts are bad. When the car is in gear, the engine and transmission put a force on the engine mounts to pull the car forward. When in gear, that force isn't there anymore. If the engine mounts are bad, the engine'* vibration transfers to the car'* body instead of being absorbed.
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Old 12-21-2010, 02:12 PM   #8
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I know the rear one is good,the rubber is not ripped at all,guess i will check the front one.
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