Auto computer causing problems?

[Matthodge1992]

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.

 

[wildbill23c]

Could very well be the computer, as the computer will adjust fuel/air mix for different conditions in an automatic than it would have to do for a manual.

 

[cammeddrz]

auto ECMs with a manual trans cause high idle, hanging idle, rough idle etc. a search of the forum and you will find several people that have the same issues