This is gonna be kinda long...but descriptive..

Just finished the resto of my 89 GTA, LB9, T-5. Was running great until about a week ago. Just seemed that it was lacking the power it once had and had developed a miss at about 3K RPM. Today, after driving about 60 miles, she started to heat up. Hit about 240 in traffic before I could get moving again. I know that the original fan switches kicked on at 228, so 240 is not bad per original standards, but I have run a Hypertech 180 switch for 3 years now and the car usually sits on 190. Got home and neither of the fans work, even with AC blowing. I got on here and found some troubleshooting methods, I found the relays, orange is the "hot" wire, black/red is the fan wire. Had power on the Orange, so I jumped the fan wire direct to orange and nothing. Then the orange wire had no power...Funny thing is, is that power came back on in a couple of minutes, tried one fan at a time and finally lost all power to the orange. Checked all fuses and links and all are OK. Now car is sitting in the driveway and will crank but not start. I do not hear the fuel pump kick on. Could my ECM be dead? It is a reman unit. Is there a simple test I can do? Any ideas and help is much appreciated

 

The ECM has no bearing on whether there is power on the orange wire for the fans.

I'd suspect a connection problem or fusible link problem. There should be a positive power node near the battery. Check the connections there, The fans, fuel pump, and ECM all get power from there.

 

Thanks Vadar...I did try jumping the A & B pins on the ALDL and still no fans on...my IAC made a funny clicking, but thats it. I find it unlikey that both fans would burn up at the same time, but I cannot get either running. Gonna wire direct to batt today and see what happens. I still think the ECU may be on the fritz, just because of how the car has been running. Just seemed to keep getting slower