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i can feel it and hear it, its idling too low or something because when i give it a little gas the vibration goes away, Also in Neutral and Park when the truck idles slightly higher there is no vibration. I was told it could be the battery causing the alternator to work to hard and taking power away from the motor


Well, that would be very easy to check! Just measure the voltage at the battery and see if it is dropping when the vibration is happening. I doubt that's the problem, but its a very easy one to check and eliminate.

I would suspect it just has something to do with the low idle when its in gear. Maybe a torque converter or transmission problem?

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
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