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For starters I would check out the vibration damper on the front of the engine. With the engine not running look at the rubber insulator between the center hub and the outer ring of the damper. If portions of the rubber are missing it can allow for vibration. Look at it while the engine is running, if it is wobbling around that could be the problem.
Do you mean the harmonic balancer located at the front of the engine , on the end of the crankshaft
You can feel the engine running inside the car not necessarily vibration but it can cause vibration but for sure you can feel the engine running at your foot.
A damaged or deteriorated engine mounting. Possibly a bad harmonic damper if the timing or firing of the spark plugs is off, then this will cause the engine to shake unevenly.
Remove the bolt then you need a heavy duty puller. They are a pain.
car run good but has a little vibration idle or running
Front of engine, passenger side, just behind the vibration damper, best accessed from underneath.
No. You have to physically turn the engine clockwise by hand using the appropriate socket and wrench on the crankshaft vibration damper bolt.
Behind the vibration damper on the passenger side. It is best reached from under the front of the vehicle.
Assuming this is the 4.3L engine, the crank sensor is located in the front of the engine, close to the vibration damper on the passenger side. It is best accessed from underneath the front of the truck.
yes the balance damper will be the same
It is normal for a little vibration with the air conditioning on due to the compressor working , fans on , and engine running a little warmer. On at least 92-96 Toyota's the fans automatically come on when the ac is turned on