need help with rough idle at stop light

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May 29, 2015 | 08:07 PM

tfmc369

Thread Starter

Newbie

Joined: May 2015

Posts: 2

Likes: 0

Model: Cherokee

need help with rough idle at stop light

i have a 98 grand cherokee laredo 4.0 just about to hit 206k miles.
i have had it since 2000 and bought it with 68k mikes on it.
recently i started to notice a rough idle when i am at a stop light.
previously this would happen when i was low on oil. i change my oil every month

as i have a continuous leak. i replaced the valve cover gasket, the oil pan gasket and still i see drops in the driveway. which direction should i go?
plugs, cap & wires?
gas additive injector cleaner?
or what?
any help would be greatly appreciated..
thanx in advance..
The fishman

May 30, 2015 | 02:41 AM

dave1123

Old fart with a wrench

Joined: Nov 2010

Posts: 14,398

Likes: 740

From: Manlius, east of Syracuse, NY

Year: 2000 XJ Sport & WJ Laredo

Model: Grand Cherokee (WJ)

Engine: 4.0L

Welcome to CF!

Try cleaning the throttle body and IAC.

May 30, 2015 | 01:16 PM

watertrucker

Junior Member

Joined: Nov 2014

Posts: 36

Likes: 0

From: Imperial Valley Ca.

Year: 1996

Model: Grand Cherokee

Engine: 5.2 V8

If you haven`t done the plugs,wires, cap and rotor yet, with 200k on the clock it needs those. Your oil leak may be the rear main seal. The 4.0 is famous for that. Not real difficult to replace.