I am going to try that diagnostic thing, also there are no codes i tried that already. I also checked spark and that is fine also. If it were the coolant sensor wouldn't it throw a code? As for fuel pressure i do not have a gauge,but i tried a different method by simply disconnecting the return line at the fuel pressure regulator and cranking over the motor and fuel came out of the line with some pretty strong pressure strong enough to reach the firewall of the car. One other thing i tried was putting a screwdriver on the injector and putting my ear to it while someone cranked the motor over and i could not hear the injector firing. That is when i started testing the fuel and suppression relay's and they tested to be in fine working order so that is why i went with the crank sensor to no avail. I sure do hope it is not the ECU!!!! BTW do you know if the ECU out of an early 85 thru 89 740 turbo will work on my car?? The local junkyard has about six of them that i can get the ECU out of but no 940's :( Thanks SAUL