Alright, I've been reading threads for the last 20 minutes or so, and I may know my problem. Before I go down rabbitholes trying to fix things, I figured I'd ask the experts here.
Today my AC blower on my '98 E sedan decided to be intermittent. It sounds like it's "rev-ing" up and down. The cabin controls look right -- temps set, fan speed indicated, no econ light, etc. In fact, vent temperatures are probably colder than I've ever seen them on this car, with 95-degree ambient temps here lately.
Occasionally the fan just cuts out and there's no airflow. The blower almost never comes on when I start the car (half a dozen tests now, at least five with no fan at start-up or thereafter). If I use the manual fan speed control and punch it up to max, it seems to always start up the fan and blow consistently and hard. After this jump-start, if I hit auto, sometimes it will then self-regulate, and sometimes it will pulsate and/or cut out completely.
Am I in for a W140 blower regulator replacement? Or is this something else? Any expert tips appreciated -- it isn't going to get any cooler around here for a good long while!
Cheers, John
07-10-2007, 08:59 PM
W210 Blower question
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