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So I drive a 92 s10 with a 2.8. And just recently it has started vibrating at around 1300-3500 rpm. It even does it I'm neutral so it isn't the driveshaft. It even sounds different. Any ideas of what it could be? The engine seems to be lopey at idle. Very uneven. Could it be bad spark plugs?
 

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Could be misfiring. Check all plugs, wires, cap and rotor first. I know mine had a broken spark plug wire and wouldn't even move over 1500 rpm. Wait until it's dark and see if you see any arcing as well. It's not hard to miss


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S10tahoe28
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