need to replace the intake manifold gasket
The "check engine" light should be illuminated. Start with investigating the code(s). They may lead you to the cause.
Loose motor mounts.
There are many reasons why your car might vibrate while it is idling. It could be running too hard for example.
bad/partially blocked catalytic converter. - kind of a rotton egg smell, right?
Effectively all the fuel that it burns while idling. You are getting 0 miles per gallon while idling.
A car can shake because of a problem in the transmission although this usually is not the problem. I will assume it shakes while it is idling or just starting out. It can also shake due to broken motor or transmission mount(s), bad u joints, a loose harmonic balancer, an unbalanced driveshaft or problems in the rear differential.
Engine is idling too slow or the alternator is weak. Or battery is getting tired.
There are several things that can cause your Jeep to stall while idling. The timing may be off or your fuel filter may be clogged.
if while driving you need wheel alignment an/or wheel balancing. if it s just while idling it can be a few things like worn motor mounts clogged fuel injectors causing low or ramping rpms
If the car dies while idling, the timing might be off. Other causes can include a clogged fuel filter or a bad spark plug.
2001 sienna stall while just stop while driving. electric just cut out power, then switch can operated but idling roughling
There can be many reasons why a car surges while idling. Some of these reasons are the computer could be dying, or the fuel injector are giving the engine too much gas.
The most likely cause is a faulty engine crankshaft position sensor.
Trans fluid is always checked with car level and idling while warmed up.
Have the OBDII connector scanned. The trouble code(s) will tell where the problem lies.
there is a T.S.B 08-36-99 I believe....just going from memory it involves a vent wire installed in the connector at the o.p.s.
Is the AC turned on?
it could be your timing is off
Check the fan control
You can adjust the idle air control valve on a 1992 1500 truck while it is just idling. This is done if the truck is idling too fast or too slow. It will help the truck run better.
The spark plug gap can cause the RPMs to fluctuate, while idling. The more probable cause of the fluctuating RPMs is a bad camshaft.
it maybe just a timing problem
you are flooding the engine