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Old February 17th, 2011, 07:49
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Ecomike Ecomike is offline
NAXJA# 2091
Join Date: Dec 2006
Location: MilkyWay Galaxy
Posts: 15,337
Re: Testing Jeep O2, Oxygen sensors

Originally Posted by XJSteven View Post
My '96 is the same as xjtrailrider with 12 volt supply only going to the O2 heater after engine start up (and I suspect possibly for a few seconds with the ignition on - I could be wrong but it looks like it's on the same circuit as the fuel pump?).
I think Renix has 2 different relays, but I do recall that if the start cycle on Renix is not initiated after X minutes, the Renix ECU cuts power to the sensors IIRC. I recall having to cycle the switch after extended tests, maybe 5-10 minutes?
Quote=8Mud: "Go ahead and put up the best fence you can build, I'll bet on some Mexican with a few dollars of nails and a pile of scrap lumber."
34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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