88ComancheMitch Posted August 16, 2014 Share Posted August 16, 2014 When reading, keep on mine I have a 98 motor and renix wiring. So, I have been having high idle. I haven't had a chance to do the c101 elimination yet, but I've narrowed the high idle down to something unrelated I think. When I unplug the sensor, it idles normal. Doesn't matter if I start it warm or cold. If the sensor is plugged in when I start it, it idles above 2000 rpm. I have no o2 sensor connected right now. Is this the reason? I know the renix motors had 2 separate sensors for gauges and for engine management. Is thus a problem with using the old wiring? Any insight is appreciated. Mitch P.s. I'm putting an o2 sensor in now if thats the problem. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 16, 2014 Author Share Posted August 16, 2014 Ok....so common sense got the best of me I think. Renix era didn't have a temp sensor up by the upper radiator hose. It was on the block. Is the plug for that a 2 prong setup? I'm thinking it may be because I'm trying to run the gauge off the same plug as the temp sensor. Link to comment Share on other sites More sharing options...
jeephack Posted August 16, 2014 Share Posted August 16, 2014 Renix era temp sensor was single wire, single terminal . Link to comment Share on other sites More sharing options...
Jeep Driver Posted August 16, 2014 Share Posted August 16, 2014 Renix era temp sensor was single wire, single terminal . Single wire is for gauge........not ECU. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 16, 2014 Author Share Posted August 16, 2014 I have a 2 prong female plug. And what looks like a 7th injector plug. Any ideas? Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 17, 2014 Author Share Posted August 17, 2014 Ill take a picture tomorrow. Whats the plug for the sensor on the side of the block look like? Link to comment Share on other sites More sharing options...
fiatslug87 Posted August 17, 2014 Share Posted August 17, 2014 The one that looks like an injector is for the knock sensor. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 17, 2014 Author Share Posted August 17, 2014 Ok. Is ho and renix knock sensors the same? Any way around this? What will not having one do? Runs fine as it is Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 17, 2014 Author Share Posted August 17, 2014 After reading the lung hd sensor stuff it looks like all 4.0 knock sensors are compatible? Link to comment Share on other sites More sharing options...
johnj92131 Posted August 17, 2014 Share Posted August 17, 2014 Think the knock sensor was a renix only item. There is no knock sensor in the Chrysler electronic controls. Guess that is why it is not plugged in??? You have the 1998 block, so no place for the knock sensor. Sorry, but I have no help on your high idle issue. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 17, 2014 Author Share Posted August 17, 2014 Think the knock sensor was a renix only item. There is no knock sensor in the Chrysler electronic controls. Guess that is why it is not plugged in??? You have the 1998 block, so no place for the knock sensor. Sorry, but I have no help on your high idle issue. Alright. Cool. Thanks. I think high idle was due to wiring/sensors plugging up but not being "right" I jumped.only the power side of the plug, and now the gauge works without high idle. my concern now is with air/fuel ratio. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 18, 2014 Share Posted August 18, 2014 I have a 2 prong female plug. And what looks like a 7th injector plug. Any ideas? That's the knock sensor..... Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 19, 2014 Author Share Posted August 19, 2014 So, what ill effects can I have from not having a temp reading being sent to the computer? Bad gas mileage? any fix for this? Link to comment Share on other sites More sharing options...
cruiser54 Posted August 19, 2014 Share Posted August 19, 2014 YOu mean from the CTS mounted on the engine block driver's side halfway up or so? Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 20, 2014 Author Share Posted August 20, 2014 Yes, which mine no longer has due to a 98 block. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 20, 2014 Share Posted August 20, 2014 Yes, which mine no longer has due to a 98 block. Why not? Shoulda removed the coolant galley plug and put your Renix CTS in it's place!! Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 20, 2014 Author Share Posted August 20, 2014 Hmmmm...I'll look at that if I get a chance tomorrow. That might help my MPG some. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 20, 2014 Share Posted August 20, 2014 I'm betting!! 5/16" square plug. An allen bit can be ground down a bit to work. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 31, 2014 Author Share Posted August 31, 2014 I'm having trouble locating the plug. Is it behind the motor mount? Link to comment Share on other sites More sharing options...
cruiser54 Posted August 31, 2014 Share Posted August 31, 2014 Could me. I've always dealt with them with my engines on a stand. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 31, 2014 Author Share Posted August 31, 2014 I'm having trouble locating the plug. Is it behind the motor mount? Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 31, 2014 Author Share Posted August 31, 2014 Copy on that. I'll have to research more and check with upt up on the lift. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 31, 2014 Share Posted August 31, 2014 Click on the Tech Photos link below in my signature. There's a photo of CTS location in there. Link to comment Share on other sites More sharing options...
88ComancheMitch Posted August 31, 2014 Author Share Posted August 31, 2014 That helped a lot. I was looking too low. Thanks! Link to comment Share on other sites More sharing options...
cruiser54 Posted August 31, 2014 Share Posted August 31, 2014 You guys all oughta take a tour through the Tech Photo link. Link to comment Share on other sites More sharing options...
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