[gt2993]

I am helping a friend with an early 911 that has a 3.6 transplant being managed by a very early and hopelessly outdated Haltech F7 injection computer. Haltech no longer supports these and I have not been able to find anyone that can test the Haltech unit itself, specifically the circuit board in it.

The problem is that the computer will not cycle the fuel injectors. There is power to everything and the car start if we manually inject a small amount of fuel into the throttle body. The issue seems to be either a lack of signal from the distributor to the ECM, or the circuit board in the ECM. I have an old DOS computer which runs the Haltech software and I have the original floppy discs for the Haltech system, but the unit will not communicate with the desktop when hooked up using the original RS232 line. I suspect that the ECU's circuit board has a broken connection somewhere, but testing for that is beyond my skill set.

If anyone knows of a Haltech F7 for sale or someone who could help diagnose the condition, any and all help would be much appreciated.