Auto computer causing issues?
I have a 89 ranger, 2.3 5 speed, got the truck as a project. When I got it it had a miss and was idling high, checked everything plugs, wires, iac, tps, vacuum lines, etc. I pulled the Codes on it and it has MAP sensor and then 3-4 auto trans codes, I get to looking and the computer is from an auto, my question is could the computer be causing it because it's for an auto or not? Like to know before I start checking the timing belt and investigating further. Thanks ahead for any help.