360_XJ
NAXJA Forum User
- Location
- Vancouver Wa
What is Renix? I've heard it more and more lately on this forum...
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Renix
- Thread starter 360_XJ
- Start date
ParadiseXJ
NAXJA Forum User
- Location
- Paradise, CA 95969
Renix is a combination of RENault and bendIX.
It's the control system that AMC used in Jeeps built from 86? to 90.
It's the control system that AMC used in Jeeps built from 86? to 90.
I was working on mine today and had the computer on the floorboards. My son read the label and asked.
Renix is Bendix based, and was in wide use in the late 80's, Jag, BMW, Mercedes, lots of others. It's speed density fuel injection in the bigger picture, calculating the right amount to inject by calculating from air temp and pressure, engine temp, O2 input, and TPS position. along with rpm and crank position. It uses the early Bosch injectors, same style as early 90s Fords - which means you can substitute those injectors and o-rings in the setup.
The system requires a "DRB" to read the live goings on, no codes are available. Which isn't bad if you are old school and diagnose things by the old rules. I just fixed my no start today, it wasn't the CPS or anything, it was an eleven year old burned up distributor cap. Duh.
It has it's quirks, but can be massaged with inexpensive modifications. When Chrysler moved to OBD and upped the horsepower, they did it with a different head, intake, and header, with some offset by using a cam with more overlap to trap exhaust, eliminating the need for an air pump. Renix wasn't a problem, other than it couldn't meet the requirement to display codes, so it had to go. It didn't fit the Chrysler environment.
It was a vast improvement over the analog vacuum emissions system layered onto a carbureted motor, and does a good job, codes or not. Jag, BMW, and Mercedes is good company to keep.
Renix is Bendix based, and was in wide use in the late 80's, Jag, BMW, Mercedes, lots of others. It's speed density fuel injection in the bigger picture, calculating the right amount to inject by calculating from air temp and pressure, engine temp, O2 input, and TPS position. along with rpm and crank position. It uses the early Bosch injectors, same style as early 90s Fords - which means you can substitute those injectors and o-rings in the setup.
The system requires a "DRB" to read the live goings on, no codes are available. Which isn't bad if you are old school and diagnose things by the old rules. I just fixed my no start today, it wasn't the CPS or anything, it was an eleven year old burned up distributor cap. Duh.
It has it's quirks, but can be massaged with inexpensive modifications. When Chrysler moved to OBD and upped the horsepower, they did it with a different head, intake, and header, with some offset by using a cam with more overlap to trap exhaust, eliminating the need for an air pump. Renix wasn't a problem, other than it couldn't meet the requirement to display codes, so it had to go. It didn't fit the Chrysler environment.
It was a vast improvement over the analog vacuum emissions system layered onto a carbureted motor, and does a good job, codes or not. Jag, BMW, and Mercedes is good company to keep.
joe_peters
NAXJA Forum User
- Location
- Grants Pass, OryGun
A Snap-On MT2500, with the right cartridge and cable, can read RENIX.
You can grab one on eBay at a price that makes it reasonable.
You can grab one on eBay at a price that makes it reasonable.
Last edited:
360_XJ
NAXJA Forum User
- Location
- Vancouver Wa
Nice, thanks for the info guys!
djgrayxj
NAXJA Forum User
- Location
- West Covina
Note from DJ
Boggy 4.0
http://www.naxja.org/forum/showthread.php?t=1098671
OP by Milt51
You might want to look at this post it has some very informative Renix links posted in it.
Boggy 4.0
http://www.naxja.org/forum/showthread.php?t=1098671
OP by Milt51
You might want to look at this post it has some very informative Renix links posted in it.
