How to install E-Fans
- Thread starter BlizzardX23
- Start date
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bottomline2000
Full Access Member
I have the 620653 in my truck. They seem quieter, but they also have 7 blades on both sides with more curve I believe. The ones from the 05 Yukon has like a 5 blade count on one side. The HD ones must have a stronger motor since the blad count is the same.
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I wouldn't call that out of context. You made a pretty broad statement, lets call it relative. If you have snow on the ground you might be fine; I'm in Phoenix, AZ. We've had over 100 days of over 100 degrees here so far this year (which is average). If the air is 100, the road is about 120-140. My truck is at full operating temp within 2 miles. I start it up, and even in this temp let it idle for about 10-15 seconds to get that initial drop from 1000rpm to about 850, then off I go.
I run about 9 months of the year here in Oregon without the fans ever coming on. It’s hard to test the full fan functions.
bottomline2000
Full Access Member
The ONLY time mine ever came on HIGH was when it was right at 120 that day. It was right mid afternoon, the hottest part of the day, and while sitting in traffic, (stopped on the highway). This same scenario happened about a year before, and my temps started climbing quick. That was the reason I put them on.
bottomline2000
Full Access Member
So if you have efans you know how they work why all the questionimg my post from 3years ago? My initial comment was in reference to starting the truck from cold and letting it warm up, not jumping in and driving it immediately. Now to further that if it takes 120deg weather for your cooling system to kick the fans on high then its rather efficient which is what I was referencing. You also must have an 03 or newer truck..Having an 00 truck we don't get that luxury and our fans will constantly kick on high if the a.c. is on and the truck is at operating temp. It's the nature of the beast. I'm in TX and in the cooler months my fans rarely come on if I'm not using the ac..stop and go traffic in the middle of summer is a different animal and no cooling system is going to work without airflow in extreme heat..
Ironically it seems I had a problem yesterday with my harness..the fans kicked off high while sitting for about 10 minutes. I had been running the a.c. pretty hard all day. The a.c. fan was still on high, but my fans were not triggering from temp. I can only assume I blew a relay. it got warmer but I hit the freeway and let it cool down and the went back to the surface streets.. Point is I drove home in stop and go traffic. With just the a.c. fan working in 100deg weather and it didn't overheat..
So my question is what's up with the questions on a 3yr old post?
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Thought I would add a post to this thread as sort of an update. I've been running electric fans on my 2002 Tahoe for over 100,000 miles (currently at 251,000). My setup was initially the flexalite fan and controller. About a year after installing I upgraded the controller to the BB harness. All was well until 3 months ago we were on our way to a family vacation on a very hot day, got stopped in traffic and my temperatures started climbing. I was able to get out of traffic and things cooled back down. However, each time I stopped the temperature climbed. If you ever installed the flexalite fans, they are quite loud but they move a lot of air. I knew they were not working because I could not hear them. We finally arrived at our mountain cabin and the trouble shooting began. One of the fans stopped working and was pulling a significant amount of amps and blowing my fuses. Luckily I was able to temporarily hotwire the other fan and was able to get home without any problems. Researched a replacement fan using this site and the web and decided to purchase the Dorman 162054. I should have listened to the reviews and this post. Installed this fan and initially very pleased. Much quieter than the flexalites. However, after a day of use, they stopped working. Blew the 40amp fuses. Replaced the fuses after checking the wiring and these fuses blew the next day. Replaced with 50 amp fuses, yep two days later these fuses blew too. Replaced with a resettable 60 amp fuses. These blew too. Checked the amp draw at this point and was surprised to see the draw when these fans kick on high was well over 60 amps. Sent the fan back and ordered the Dorman 162053 fan and have not had a problem since. Maybe I had a bad fan, but based on what I read I think I made the right choice of going with the Dorman 162053.
