sarcastichate

hello i bought a 95 grand jeep cherokee laredo a month ago and it only has 120 k miles on it its an automatic i have did a full complete tune up and oil change and went and replaced the alternator and starter and the trans fluid and filter changed and the water pump was just changed before i bought it well it runs real well i have had two mechanics look it over and they cant find anything wrong with it well here is my question while its at idle it has a vibration and goes away when i drive it do you know what is causes the vibration the tranny mounts and the engine mounts are good .. the other question is when its snowing outside do i drive it in part time fwd or 4wd low those are the only options i have on the shifter besides 2wd and n thank you and i am new here

sarcastichate

sorry i forgot to say its the 4.0 motor

ol"blue

What RPM does it idle at?
And Welcome to CF!
Dan

sarcastichate

idles at 5

ol"blue

Check the sticker/tag on your radiator core support to see what the idle speed should be. If it is too low it could be the cause of your vibration at idle.

1ATony

You should be in Part time 4WD,4WD low is for pulling out a sunkin buddy