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What is this module for

774 views 6 replies 4 participants last post by  mcmud 
#1 ·
On my 81 CJ7 with a 258 engine, there is a module with nine wires coming out. It is located directly opposite the alternator on the passenger side wheel well. The wiring diagram I have does not indicate this part. Can someone tell me what is is and its purpose? Thanks.
 
#6 ·
That would be the first generation MCU used in the 49 state '81 & '82 build years.

It is or was used to control the fuel feed back system by taking readings from the O2 sensor and controlling the BBD stepper pins and the sol-vac actuator.
Thank you. Since I have a Motorcraft 2100 carb, I assume that this module isn't doing anything and could be removed along with its associated wiring. Is this correct?
 
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