88ComancheMitch Posted July 18, 2014 Share Posted July 18, 2014 I have a 88 wiring harness and computer (i think), running a 98 motor. The previous setup had no o2 sensor at all. Is there supposed to be one? Thanks. Mitch Link to comment Share on other sites More sharing options...
cruiser54 Posted July 18, 2014 Share Posted July 18, 2014 Yes. It was in the exhaust manifold. HO had it in the headpipe. 3 sensors on the lower left of engine. CTS, O2, knock. Harness for them runs from front of injector rail kinda down behind the power steering pump. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted July 19, 2014 Author Share Posted July 19, 2014 So only 1 o2 sensor? Link to comment Share on other sites More sharing options...
88ComancheMitch Posted July 19, 2014 Author Share Posted July 19, 2014 And should I be using a 88 style o2 or 98 style? I'm wanting to install a a/f ratio gauge, so could I replace the stock with a wideband and splice it into the 88 harness? Link to comment Share on other sites More sharing options...
Eagle Posted July 19, 2014 Share Posted July 19, 2014 If the ECU and injection system is still the '88 Renix system, use the O2 sensor for an '88. If you swapped in the newer Chrysler ECU and injection when you swapped the motor, then use the O2 sensor for the year of the vehicle from which you took the wiring harness. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted July 19, 2014 Share Posted July 19, 2014 If the ECU and injection system is still the '88 Renix system, use the O2 sensor for an '88. If you swapped in the newer Chrysler ECU and injection when you swapped the motor, then use the O2 sensor for the year of the vehicle from which you took the wiring harness. ^This. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted July 19, 2014 Author Share Posted July 19, 2014 If the ECU and injection system is still the '88 Renix system, use the O2 sensor for an '88. If you swapped in the newer Chrysler ECU and injection when you swapped the motor, then use the O2 sensor for the year of the vehicle from which you took the wiring harness. ^This. That's what I was figuring. What about the WBo2? Any input on that? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 19, 2014 Share Posted July 19, 2014 You can install a stand alone WB on anything if it has it's own O2 sensor. As far as compatibility, the Renix O2 sensor is not compatible with WB. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted July 19, 2014 Share Posted July 19, 2014 WB? :dunno: Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 19, 2014 Share Posted July 19, 2014 And should I be using a 88 style o2 or 98 style? I'm wanting to install a a/f ratio gauge, so could I replace the stock with a wideband and splice it into the 88 harness? The 98 has two narrow band O2 sensors, upstream and downstream. One before the catalyst, one after. A wideband O2 sensor does not replace the narrow band sensor(s) you have now. You still need to keep the original Renix or HO O2s, whatever system you have, to feed the ECU. The wideband O2 sensor is stand-alone and it's only purpose in life is to provide the input for a wideband A/F meter or data recorder. To install it you need to weld an additional bung on the downpipe and wire it up. Link to comment Share on other sites More sharing options...
cruiser54 Posted July 19, 2014 Share Posted July 19, 2014 WB? :dunno: Wide band. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted July 19, 2014 Author Share Posted July 19, 2014 Thanks guys! I already have a bung and meter. Just need the sensor. Any ideas of the cheapest place to get one? Looks like 1.8t vws had wbo2 from factory. Would one of those work for the gauge? Its an autometer analog gauge Link to comment Share on other sites More sharing options...
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