89 jeep Comanche

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Mar 31, 2019 | 05:45 PM

Buck Maddox

Thread Starter

Newbie

Joined: Mar 2019

Posts: 1

Likes: 0

Model: Cherokee (XJ)

89 jeep Comanche

Motor runs good until after about 29_30minutes then begin to lose power.like its not getting gas. Anybody have a clue to what the problem could be 4.0 automatic 2 wheel drive

Last edited by Buck Maddox; Mar 31, 2019 at 05:50 PM.

Mar 31, 2019 | 07:22 PM

mikebravo

Member

Joined: Nov 2016

Posts: 217

Likes: 5

From: KTUL

Year: 1996

Model: Cherokee

Engine: 4.0

I would start with a tune up and check fuel pressure.

Mar 31, 2019 | 07:54 PM

gat

Senior Member

Joined: Mar 2016

Posts: 621

Likes: 9

From: Oklahoma

Year: 1992

Model: Cherokee

Engine: 4.0L L6 PowerTech (stock)

I do like to take opportunities alike this for a complete "tune up". That'd be distributor's cap and rotor, spark plugs and wires, fuel filter, air filter, and maybe pour some fuel injector cleaner in the tank.
If that doesn't alleviate, then let us know. Post or link photographs of the old spark plugs.