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View Full Version : Renix info?!?

mikeny59
October 31st, 2006, 08:22
Not familiar w/motor, I have a '98, when did Renix cease and my type supplant?

Thanks,
MJR
October 31st, 2006, 08:30
Renix 87-90
HO 91-up.
mikeny59
October 31st, 2006, 08:37
thank you...
ROADLESS
October 31st, 2006, 09:45
IIRC it was also used in the YJ's (Wranglers) to 92 or 93.
MJR
October 31st, 2006, 17:41
IIRC it was also used in the YJ's (Wranglers) to 92 or 93.

Renix was on XJ 4.0L's from 87-90. The Wrangler used a carburated 4.2L from 87-90 and in 91 switched to the HO 4.0L. 2.5L ones are a little different.
5-90
October 31st, 2006, 20:34
RENIX isn't an engine, it's a control system (although some small changes were made to the AMC242 - and probably the AMC150 - when RENIX was replaced with ChryCo OBD-I electronics...)

1984-1990 XJ and MJ with the AMC150 I4 and AMC242 I6 used RENIX controls (spec'd by Renault, built by Bendix,) which were also "pre-OBD." The GM173 V6 used General Motors controls, which were (I believe) OBD-I compliant.

The Renault Turbo Diesel (used until 1987/88) was also pre-OBD, but used its own control setup (which may have been a variation on RENIX/FENIX, but I've not been able to confirm this yet...)

If you've got a rig 1991 or later, it's not RENIX. Period.

5-90
mikeny59
November 1st, 2006, 05:13
5/90,

thanks for the clarification, had that feeling, what with all the threads on parts interchangability, but most occasions ignored threads on Renix :speepin:
5-90
November 1st, 2006, 11:55
Yeah - RENIX parts interchangeability is pretty much the same for any other AMC242 or AMC150 - save the electronics. The sensors might also physically differ, but do essentially the same things (the biggest difference being the TPS - the rest are pretty standard GM parts.)

Also note that the flywheel/flexplate and CPS won't interchange - they function differently on either side of the 1990/1991 break. You can, however, just swap the flywheel/flexplate and CPS without incident, if you are changing the control system over.

And, the intake ports were raised about 5/8", starting in 1991, which is what improved the "breathing" of the cylinder head. Therefore, the intakes won't swap easily (it CAN be done, but it's not a "plug-and-pray" swap) and the throttle bodies are also different. I'm trying to collect parts so I can sort out swap details...

5-90