5.9l engine shake

rjmcall · 12-05-2008, 07:48 PM

i have a 1998 5.9l grand cherokee and as soon as i press on the gas it starts to vibrate pretty severe and ideas

**xJoshxx** · 12-05-2008, 08:50 PM

does the tranmisson slip alot? or throwing any codes? bad sparkplugs motor mount all kinda junk can go wrong stuttering fuel pump

rjmcall · 12-05-2008, 09:07 PM

it doesnt slip but its only when i step on the gas

rjmcall · 12-05-2008, 09:10 PM

it doesnt slip could the spark plugs make your car shake

**xJoshxx** · 12-05-2008, 09:46 PM

Quote:

Originally Posted by rjmcall

it doesnt slip could the spark plugs make your car shake

yes if the gaps are way off? and check wires and distributor

rjmcall · 12-06-2008, 12:29 PM

i checked the gap last night and thier fine.

nashmd454 · 12-06-2008, 12:40 PM

not too sure on this but it sounds like a place to look to me...the harmoic balancer????

rjmcall · 12-06-2008, 01:15 PM

maybe i might have to get that checked out

BLACKzj52 · 12-06-2008, 01:30 PM

how are ur motor mounts?
dont forget to check those as well

PoorMan73 · 12-06-2008, 03:26 PM

What

said. When I look at my motor mounts all of the rubber has cracked with a bunch of it missing.

rjmcall · 12-10-2008, 02:15 PM

wow after lifting it 4.5 inch no more shake. good but wierd and i also have a ticking or clicking leak now what could that be do you think.

grandpapy · 12-10-2008, 03:10 PM

Quote:

Originally Posted by rjmcall

wow after lifting it 4.5 inch no more shake. good but wierd and i also have a ticking or clicking leak now what could that be do you think.

where do you hear it the most at the bottom of the engine or the top of the engine? or is in your supension you hear the ticking or clicking sound? interesting about the shaking of your engine stopped, probably because of your shocks and or coils were gone and that high of a lift meant you got some new bushings with your new control arms and track bar etc? probably why no more shake when on the gas.

cmonson · 12-10-2008, 03:47 PM

I would highly suggest looking in the balancer. Even though it may look OK visually, the plastic / rubber piece that holds the outside counterweight, to the inside weight can deteriate and thus slip. I don't know if the 5.9s use a viscous fluid damper, or not...

Other items to check for is a miss, could be a plug wire, a rotor, a cap, etc.

It could also be an injector.

are there any codes?

12-10-2008, 03:47 PM	#13
cmonson Registered User Join Date: Nov 2006 Location: Columbus Posts: 1,549 Profile Gallery Classifieds My Jeeps	I would highly suggest looking in the balancer. Even though it may look OK visually, the plastic / rubber piece that holds the outside counterweight, to the inside weight can deteriate and thus slip. I don't know if the 5.9s use a viscous fluid damper, or not... Other items to check for is a miss, could be a plug wire, a rotor, a cap, etc. It could also be an injector. are there any codes?