Xoutpost.com - View Single Post - What did you do to / for your E53 today??

Henn28 · #**16943** 11-15-2024, 02:08 PM

Today is my sunday and I didn’t feel like working on anything actually important, so I cleaned and lubed my window seals and tracks. The rag and credit card trick is fantastic, and the dry silicone spray seems to help a lot.

I also replaced the hedgehog, which I was hopeful would fix my IHKA issue. The car won’t blow over bar 3 in the auto mode, and the (main) dash vents never seem to blow as hard as they used to. However, with max ac, or manual fan selected all variations of fan speed work. Also, the center/dash vents blow fine when selected on the panel. This tells me it isn’t a switch or stepping motor, or the main blower, and the hedgehog didn’t seem to fix anything.

So I pulled the IHKA panel and saw a lot of dust and lint inside of it, thru the various vents and holes. The fan especially was clogged with a ton of lint. I wasn’t sure how to open it up, so I got out the compressor and blew it out from all angles, and then shot a bunch of contact cleaner into it. The fan seemed to turn well with the compressed air.

My 1 min test in the drive way after buttoning it up seemed promising. I’m headed out to run errands and will report back.

***Update***
So far so good. Drove the car for a while running errands and the dash vents were blowing fine again. I also got back in it after it sat in the sun for a bit and the blower came on at roughly 50% immediately. Before the cleaning it wouldn’t do more than 3 bars in Auto.

I don’t think the hedgehog did anything, but replacing a 22 year old resistor that had a few bent bits isn’t the end of the world. I didn’t spring for OEM, so hopefully it will last a while.

What I think is the blower as been squeaking in cold weather, but if I’m really lucky maybe it was the little fan I cleaned out in the IHKA controller.

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