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O2 sensors

mht95ranger

Member
Joined
January 15, 2009
Messages
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City, State
Andover, Ma
Year, Model & Trim Level
1995 ranger 4x4 4.0l
Ok guys,I posted on another forum. I have a problem with my truck again. I have cel and pulled the codes. 135 141 155. I know that the are the o2 sensors heat circuit faults but what is the chance all 3 o2 sensors went bad? Looked on line and found that newer rangers had a fuse for the heated o2's. Can't find anything like that for my 95??
Anyone have any ideas for me to check? Once it warms up a little I will climb under there and look at the harness.

Thanks for the help, David

Sorry Mods if this is in the wrong spot.
 






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