Alright, well I finished the b18a1 swap in my 90 EF. I had a DX, and put an Si interior harness in it. Well, everything about works, except for my heater. Before the swap, it worked perfectly. Now, the blower won't even come on. Another problem is that I don't think the engine fan turns on at all. My question is, if the engine fan won't turn on, will that cause the heater blower not to work? Thanks.

 

no. double check that you didn't pull any plugs loose. and that fan won't turn on unless the engine gets to a certain temp.