Fan kicks on when I turn heater on. on 1995 Chevrolet Lumina APV

Evening, I was driving my 95 Lumina APV yesterday & had thought I had the check engine light problem solved with replacing the vacuum hose to the fuel pressure regulator. I pulled the ECM fuse put it back in drove her a good 20 miles at all speeds. Before it would come on with in 2-5min. of driving her. So I turned the heater on & the fan kicked on (i have noticed this in past so not sure if this is normal) anyway as soon as I put the heater on the CEL went on & stayed on. I turned the heater off the fan kicked off but the CEL stayed on. There was no hesitation or anything running wise. I just don't understand why the fan would kick on when I turn the heater on & more so why the CEL came on then?. As I said a good 20 miles at all diffrent speeds & no CEL until I put the heater on!. Thank you! Will,

by in Camillus, NY on March 22, 2010
1 answer 1 comment
ANSWER by on March 22, 2010
Without knowing what code is stored in the computer, nobody can give you an answer.
COMMENT by on March 23, 2010
Gee wiz thank you for that answer that must of took you all of 1sec. Really that was a BIG help!

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