Engine runs good then doesnt.
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Newbie
Joined: Jun 2013
Posts: 1
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Model: Cherokee
Engine runs good then doesnt.
I have a 93 Cherokee Sport 4X4 With the 4.0 litre, Last 8 months it runs fine for a week then starts sputtering and acts like its loosing gas or not firing on all cylinders. Changed Spark plugs, wires, fuel filter and tested my fuel pump pressure. Nothing is solving it. Ive been trying to figure this out for way to long. Anyone has any input it would be appriciated.
Senior Member
Joined: Oct 2010
Posts: 503
Likes: 1
From: pennsylvania
Year: 1996
Model: Cherokee
Engine: i6
I have a 93 Cherokee Sport 4X4 With the 4.0 litre, Last 8 months it runs fine for a week then starts sputtering and acts like its loosing gas or not firing on all cylinders. Changed Spark plugs, wires, fuel filter and tested my fuel pump pressure. Nothing is solving it. Ive been trying to figure this out for way to long. Anyone has any input it would be appriciated.
Seasoned Member
Joined: Jul 2012
Posts: 333
Likes: 0
From: Fredericksburg, VA
Year: 1996
Model: Cherokee
Engine: 4.0 v6
I personally can't explain how but I would check your Throttle position sensor and maybe make sure MAP sensor is clean and if you can test CPS. I think TPS and CPS can be tested with a multimeter. Haynes guide explains how if you have one if not I know you can find it on here how. Also check you air filter. Make sure it's clean and try to eliminate vacuum leaks
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