[REDDYZ]

Cougars have OBD-II interface. However, it depends on the scan tool you are using. Unless that tool is specifically made for that make and model its really a tricky job to get codes out of cougar. I have used Snap-on and Launch tools. There are about 5 to 6 different options to get into the system. I mean by selecting Oz Ford, or Euro Ford, or Mercury or Mazda. Tricky part was most of them gives you simplified options with no codes and I remember only 1 or 2 gives you lot of diagnostic options, display live data and comes up with codes.

There is another possibility that you can look into. Since you mentioned in other thread that rpms are going high when you engage clutch, there is a possibility that throttle body is getting stuck at times. Check the throttle cable and butterfly operation and see if there is any build up in throttle body. You might think how can rpm go high if throttle is stuck. With manual cars say for example if are cruising at 3000rpm and throttle is stuck. Now when you press clutch you are taking load off the engine which will automatically increase engine rpm at the same throttle position. Hope you got my point. Its worth checking the butterfly and throttle cable operation.