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madprof01
February 16th, 2006, 03:21 AM
Whats up guys,
I was diagnosing a coolong fan issue on a 97 f body lt1. I used bidir to command the fans on and it did not work. so I commanded the low speed fan and the a.i.r. pump came on. After verifiing that the problem was the relay the old way, I started checking the other headings in bidir. come to find out that the closed loop heading is the one commanding the fans on/off. as well as the high fan commandes the fuel pump. are you aware of this? Is there a fix?
Thanks for the great support. let me know,
madprof01

joecar
February 16th, 2006, 07:43 AM
Hmmm...
Works for 98+ F/Y body and 03+ trucks.
Must be something different about LT1...? :nixweiss:

joecar
February 16th, 2006, 07:45 AM
Some of the bidir controls (MIL, fans, AIR, AC) work on the 3.4L V6 (RPO LA1).