1995 Dodge Dakota Possible Computer Problem?

Hi everyone. I am having a problem with my 95 Dodge Dakota 3.9L. Before I go ahead and put a new computer in, I want to see if anyone else has
experienced this problem and knows what may be causing it. At random, the A/C will turn on and the OverDrive will turn off at the same time. Clicking the OD button has no effect on it and all of the fan/air conditioning controls are turned off compeletly yet the A/C is still running strong. My guess is it's one of two things, either the computer is going haywire or there is a loose ground somewhere. I haven't had a chance to really look it over, but has anyone else had this happen? I did check the fuses and relays and all is fine there.
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