NOx too High
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Joined: Oct 2008
Posts: 171
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Year: 89
Model: Cherokee
Engine: 4.0L
NOx too High
Im about 104 points on the 25mph test too high on NOx..
Ive swapped out the Cables, Plugs, Cat, O2, etc. And cleaned it all up brand new air filter. If I use 91oct gas would it lower it that much? any help is appriciated!
Ive swapped out the Cables, Plugs, Cat, O2, etc. And cleaned it all up brand new air filter. If I use 91oct gas would it lower it that much? any help is appriciated!
Thread Starter
Member
Joined: Oct 2008
Posts: 171
Likes: 0
Year: 89
Model: Cherokee
Engine: 4.0L
MAP is good, and my temp seems to be ok I havent replaced it but I was thinking maybe the EGR? its a $104 part so i want to be sure before i try to replace it and I dont know how hard it is to replace... any way to clean it out?
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