OK, got the trouble codes now what??
Thread Starter
Junior Member
Joined: May 2014
Posts: 50
Likes: 1
From: Gilbert,AZ
Year: 1997
Model: Cherokee
Engine: 4.0
OK, got the trouble codes now what??
1997 Cherokee
4.0 engine
auto trans. 4x4
I have two trouble codes PO118 and PO171. The first one has to do the temperature sending with too high voltage going to it. The second one deals with a lean mixture condition. OK, so where do I go from here, change the temp. sending and where do I start with the lean condition???? Thanks for the help, great forum. Dan
4.0 engine
auto trans. 4x4
I have two trouble codes PO118 and PO171. The first one has to do the temperature sending with too high voltage going to it. The second one deals with a lean mixture condition. OK, so where do I go from here, change the temp. sending and where do I start with the lean condition???? Thanks for the help, great forum. Dan
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Yep. That code doesn't mean "wow that's really hot!" it means the PCM sees the input voltage at full strength being fed right back to it instead of a signal. Look for shorts in the wire before replacing that sensor. That cable bundle goes back to a sketchy spot at the back of the head where abrasion can occur.
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