Had a chance to do some troubleshooting. By jumpering connections in the EGR module jack (guided by the schematic,) I was able to check the wiring for shorts and make sure I was getting power to the module. With the module removed I was able to run the engine so was able to check that the 3 intake manifold flaps and EGR valve were working. Jumpered the module pins to emulate fuction which it didn't but I wasn't 100% on that experiment. Been driving the car without the module in place and it idles a little better, runs about the same, using too much fuel. Heater doesn't work too well though. I'm pretty sure the module is shot and will replace it soon and give an update. Jack