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Engine harness different

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10+ Year Contributor
2,124
50
Aug 11, 2009
Allentown, Pennsylvania
My 1996 Rs is throwing some codes like the iat, misfire, iac. I replaced the iat and iac and tested the harness but the code comes back again. I am thinking the signal cuts out at some point and it is either the harness or the ecu. I need to know if the harnesses are swappable. are the 5speed 96-99 the same?
 
If you have a 96 then you need a 96 harness, gs or rs will work for you since you have an rs. Gs just has a few more plugs ( fog lights etc.). If you have an auto then you need an auto harness, if a manual then you need a manual harness.
 
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