Renix Engine Monitor
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CF Veteran

Joined: Feb 2015
Posts: 1,528
Likes: 2
From: North Carolina
Year: 1993
Model: Cherokee
Engine: 4.0
Anybody else been following the this guy on YouTube. He made a plug-in device to monitor renix engine readings. pretty cool. He's gonna be selling them too. Just thought id share.
Senior Member
Joined: Sep 2014
Posts: 560
Likes: 18
From: U.P. MI
Year: 1989
Model: Cherokee
Engine: 4.0L
Yeah, NickInTime was one of the first YouTube channels I subscribed to after I got my Renix.
He seems like a really smart kid that isn't afraid to jump in and tackle just about anything.
I just wish he didn't curse so much.
He seems like a really smart kid that isn't afraid to jump in and tackle just about anything.
I just wish he didn't curse so much.
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CF ADMIN

Joined: Sep 2010
Posts: 34,088
Likes: 257
From: Lantana, Fl
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Wonder if I could tinker with it in reading and adjusting the only sensors/electronics I have. A MAP, O2, CPS and Injector. Everything else has gone bye-bye.
I got the first alpha unit over the weekend. already used it to troubleshoot a problem, will be using again to make sure my new o2 sensor works properly!
and I hit it with some blue paint just for fun:
and I hit it with some blue paint just for fun:
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Some observations based on my use of the factory tester.
The 02 sensor should start switching from .1 to 4.99 within a minute of a cold start. It is NOT temperature triggered. It does have an electric heater though. Voltage at that wire in the connector?
To test for knock sensor being good, rev the engine to about 2000 RPM and you should then see a reading of about 20 or so.
As for the TPS, you're testing the wrong connector. Should use the flat connector.
http://cruiser54.com/?p=54
The 02 sensor should start switching from .1 to 4.99 within a minute of a cold start. It is NOT temperature triggered. It does have an electric heater though. Voltage at that wire in the connector?
To test for knock sensor being good, rev the engine to about 2000 RPM and you should then see a reading of about 20 or so.
As for the TPS, you're testing the wrong connector. Should use the flat connector.
http://cruiser54.com/?p=54
Last edited by cruiser54; Sep 30, 2016 at 05:38 PM.
I have a new o2 sensor, I am going to be replacing mine with tonight. I bought cheap, and that was a mistake, I now have an NTK ready to go in tonight/tomorrow morning.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Make sure you have power to the O2 sensor heater with the key on. Red or orange wire at the connector.





