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Old 06-15-2011, 02:08 AM
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Location: Orange County, California
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300e Auxillary Fuse Melted

Hi all. I just had my engine replaced and the oil level sender light came on after drving a couple miles (will get my old one from the last engine tomorrow). I checked the level sender and wire to make sure it was tight. Then I checked my fuse box and noticed that my auxillary fans fuse was melted. I had another of the same and replaced it but my fans have not kicked on yet and the temperature hovers around and above the 100 degree mark and about 95-97 when driving. It use to be a couple clicks above the 80 mark and when it got hot and fans kicked on, you could see the temp gauge drop back down to around what I guess is 85-95 degrees. That hasn't happened yet. I'm going to go back to the shop but what should I have them look at or is there something I can check on my own? Could this issue have caused my last engine to overheat while climbing a grade out of nowhere? 1991 300e 3.0

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Old 06-15-2011, 08:28 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
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DC motors age & will consume more current than what they were designed to do!

Using an amp probe on the circuit should show just how much current the fans are drawing.
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Old 06-15-2011, 02:12 PM
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Right now, they aren't drawing any current as far as I can see because they won't turn on. The fuse/conector behind the headlamp seems to be in tact, the red fuse is still good, and the fans spin freely by hand. Any tips on how I can test these with a meter? Thanks!
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Old 06-15-2011, 04:10 PM
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Good news. Aux fans are working now. Must have had a loose connection as they started working after I followed and pulled on some wires. Thanks!

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