Most likely a broken balance shaft belt
Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.
Engine mounts could be loose or worn.
Many things could cause an engine to shake. One, for example, would be low coolant or oil levels.
My 92 PA had a similar problem. At low engine speeds it would shake pretty bad. It turned out to be the harmonic balancer. You can easily check this by looking at the front end of the engine. It is the pulley that drives all the belts. If the rubber has deteriorated, it could be the cause of your problem.
Bad engine cushions can make the engine shake. bad spark plugs cause malfunction as the car starts running.
Could be a broken motor mount.
Could be a problem with your torque converter
the engine mounts could be bad
if the car is an automatic, there is a problem with your torque converter if it is a standard shift the fly wheel may be out of balance
could be a broken engine mount
First you need to determine the cause of the problem, injector?, plug, plug wire, coil , is the "light on "One thing you could try is start the engine and move the plug wires around "shake" to see if you get a misfire other than that bring it to me First you need to determine the cause of the problem, injector?, plug, plug wire, coil , is the "light on "One thing you could try is start the engine and move the plug wires around "shake" to see if you get a misfire other than that bring it to me First you need to determine the cause of the problem, injector?, plug, plug wire, coil , is the "light on "One thing you could try is start the engine and move the plug wires around "shake" to see if you get a misfire other than that bring it to me First you need to determine the cause of the problem, injector?, plug, plug wire, coil , is the "light on "One thing you could try is start the engine and move the plug wires around "shake" to see if you get a misfire other than that bring it to me First you need to determine the cause of the problem, injector?, plug, plug wire, coil , is the "light on "One thing you could try is start the engine and move the plug wires around "shake" to see if you get a misfire other than that bring it to me First you need to determine the cause of the problem, injector?, plug, plug wire, coil , is the "light on "One thing you could try is start the engine and move the plug wires around "shake" to see if you get a misfire other than that bring it to me
somthing is out of ballance or lose. it could be a U- joint or motor mount or a wheel. If non of those are the problem then it might be an internal problem in the tranny or engine itself but Always check the simple stuff first.