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WTB 91 (ish) Non Renix ECU


kemaneseandra
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91-93 ECUs are not all the same, especially the 91s. Not only because of transmission differences (auto or standard), Calif or not, RFI or not, etc. The 60-pin connector pinouts are different too. I tried a 93 ECU on my 91 and it wouldn't run because one of the ECU pinout functions appeared on a different pin and was mismatched to the 91 harness connector. If you have a 91 wiring harness, you will need one of the 91 ECUs. Partial sample of 91-93 ECU available:

 

                 SINGLE BOARD ENGINE CONTROL MODULE ***

NOTE: RFI=RADIO NOISE SUPPRESION Sales Code for R is JLW

                6-Cyl. Eng., Man. Trans.
5602 7532 1 XJMJX1          1991, w/o RFI
5602 7532 1 XJMJX1          (Leaded Fuel)
5602 7396 1 XJMJX1          1992, w/o RFI
5602 7396 1 XJMJX1          (Leaded Fuel)
5602 7356 1 XJMJX1          1993, w/o RFI
5602 7356 1 XJMJX1          (Leaded Fuel)
5602 7418 1 XJ,MJ           1992, w/RFI
5602 7418 1 XJMJX1          (Leaded Fuel)
5602 7446 1 XJ,MJ           1993, w/RFI
5602 7446 1 XJ,MJ           (Leaded Fuel)
5602 7534 1 XJ,MJ           1991, CALIF., w/o RFI
5602 7486 1 XJ,MJ           1992, CALIF., w/o RFI
5602 7356 1 XJMJX1          1993, w/o RFI
5602 7356 1 XJMJX1          (Leaded Fuel)
5602 7492 1 XJMJ            1992, CALIF., w/RFI

5602 7446 1 XJ,MJ           1993, w/RFI
5602 7446 1 XJ,MJ           (Leaded Fuel)
5602 7376 1 XJ              1991, w/o RFI, EUROPE
5602 7484 1 XJ              1992, w/o RFI, EUROPE
5602 7424 1 XJ              1993, w/o RFI, EUROPE
5602 7490 1 XJ              1992, w/RFI, EUROPE

5602 7448 1 XJ              1993, w/RFI, EUROPE

                6-Cyl., Eng., Auto. Trans.
5602 7528 1 XJMJX1          1991, w/o RFI
5602 7528 1 XJMJX1          (Leaded Fuel)
5602 7488 1 XJMJX1          1992, w/o RFI
5602 7488 1 XJMJX1          (Leaded Fuel)
5602 7360 1 XJMJX1          1993, w/o RFI
5602 7360 1 XJMJX1          (Leaded Fuel)
5602 7494 1 XJMJX1          1992, w/RFI
5602 7494 1 XJMJX1          (Leaded Fuel)
5602 7452 1 XJMJ            1993, w/RFI
5602 7452 1 XJ,MJ           (Leaded Fuel)
5602 7557 1 XJ              1992, w/Police Pkg., w/RFI
5602 7551 1 XJ              1993, w/Police Pkg., w/RFI
5602 7530 1 XJMJ            1991, CALIF., w/RFI
5602 7400 1 XJMJ            1992, CALIF., w/o RFI
5602 7362 1 XJMJ            1993, CALIF., w/o RFI
5602 7422 1 XJMJ            1992, CALIF., w/RFI
5602 7456 1 XJMJ            1993, CALIF., w/RFI
5602 7558 1 XJ              1992, CALIF., w/Police Pkg., w/RFI
5602 7552 1 XJ              1993, CALIF., w/Police Pkg., w/RFI
5602 7378 1 XJ              1991, EUROPE
5602 7398 1 XJ              1992, w/o RFI, EUROPE
5602 7426 1 XJ              1993, w/o RFI, EUROPE
5602 7420 1 XJ              1992, w/RFI, EUROPE
5602 7454 1 XJ              1993, w/RFI, EUROPE
 

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Guess I need to do a little more research on this. When we got the jeep, it had been swapped to a 93 engine (or so I was told) Guess I am going to have to read the stamping on it when we get it out this weekend for the swap. Not sure if the harness got swapped, I assume it has been since the 93 engine ran well for at least ten years before it died.  At least I know what's going back in! Suppose I'll pull the ECU and research those part numbers above to see what I have now. 

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