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Fair enough! I will try driving the car farther. I did notice that after driving about 10 miles and then going to my friends house and feeling the lower radiator hose, it wasn't hot. It snowed in wisconsin yesterday morning so its fairly cool out and maybe it didn't even get to operating temp. I then let it sit idling for about 10 more mins, the thermostat kicked open and the lower radiator hose got hot, and then finally the radiator fan came on.
I think i'm going to hook up that switched positive wire, and plump a vacuum gauge inbetween the egr control box and the egr valve and just monitor if its actually getting vacuum.
If the EGR system in my car for some reason isn't working right, due to an ecu error or something else, would this cause poor gas mileage?
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