All right here goes...............not in order.off the top of my head
87 to early 88,need to bypass the bulk head connecter for the TPS wires,and wire around this connecter,take that connecter out of the loop,all the TPS wires,for the PCM side and the trans,second.......add ground to TPS ground right at TPS,needs to be 5 ohms or less to ground good,GM weather pack connecters just plain suck,you can get teminal repair kits to freshin these connecters up at the TPs etc.where ever the GM style connectors are used........Third....,need to use a GM style IAC actuation tool to close the IAC motor,unplug the IAC when fully shut,start engine and warm up,set min airflow to around 650 rpm or a tad higher if engine worn,I just bend the stop on the TB instead of trin to adjust the stop screw,also you need to remove the welch plug on the lower half of the TB to gain access to a torx screw that is your secondary idle air bypass,you need to pop out this screw and clean this passage and reinstall screw,make sure the screw is lightly seated all the way before you set min airflow(butterfly adustment),you use this secondary air air bypass screw for fine adjustmant after the base idle is set,next after the min airflow is set and secondary airflow,you need to adjust the TPS to 12%,that is a DRB value.......I have been told you can do this without a DRB buy probing the TPS signal wire for the engine side and sweeping the TPS to full throttle and then back idle and calculate 12% of the min to Max voltage you observed on the DVOM( example idle= 1.00 volt WOT= 5.00 volt difference of 4 volts,so 12% of 4 volts, idle value would be 1.48 of a volt.....jump in someone if my math is screwey
.I think you get the idea...........also another tip is to use the CPS patch kit that wires the CPS directly into the PCM,I use these on all the years of renix,also need to set the CPS AC cranking voltage to at least .75 AC volt,if you get up near a volt or over the CPS usally rubs the interupter ring on the flywheel,also you need to sync the dist manually to compensate for Timing chain stretch,...That will be in another post when I get all my facts and memory straight........................hope this helps.............remember.do one thing at a time to observe the changes,not all at once ,if you did one thing wrong,then you will have a reference point to look where you screwed up........A best tool fot he Renix is a DRB 2 and the Renix adaptor harness and super card..........I see these floatin around Ebay once in awhile,and will seriously help get your Renix running its best............also on the idle flash(jump in rpm),the Renix PCM has been updted numerous times to address different issues,all the Mopar PCM remans they offer now are the latest and greatest...........Mopar does offer a hot rod PCM for the Renix(offroad only),and an addition of a High altitude CPS helps also.....................Thier is more.....I will return
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