12=battery disconnected within the last 50 starts
35=open or shorted condition detected rad fan relay
43=multiple cylinder misfire
43= multiple cylinder misfire
55=end message code

12 and 55 are OK
43 is generally bad plugs and/or wires

 

this engine was running last weekend when i pulled it out of a donor car, would they go bad in between? someone suggested that i check for old gas and hook the exhast up, any thoyughts?
thanx
Kevin

 

I'm not sure how code 43 is sensed but. I believe it can also be a fuel or injector problem.

 

Thanks for the info, when i sprayed with starting fluid it wanted to start so there is def. fuel prob how do i check injectors?