I know this is an older thread, but I was having the same problems, and now it won't blow at all. I've changed the resistor twice. The OEM resistor was burned outm and the first one I installed burned out almost immediately. The connector harness was also burned out. So I replaced the resistor and spliced a new harness in. It still doesn't work. Relay is fine, brand new resistor and connector harness. The only thing left is he blower motor itself. This is extremely frustrating.