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#1062699 - 07/12/19 01:53 AM Ramcharger fans won't run both speeds  
Joined: Sep 2011
Posts: 96
Dan The Man 920 Offline
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Dan The Man 920  Offline
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Joined: Sep 2011
Posts: 96
East Rockaway, NY
I just finished installing "ramcharger/intrepid" fans on my 87 monte carlo. I installed a Casper's electronics universal relay kit with 3 position switch and relays. It came completely assembled and ready to plug in. After installing the harness and starting the fans, I noticed that I get the same fan speed(not sure which one) when I throw the supplied switch in either direction. Does anyone have any experience with this harness kit? All the instructions say is to mount and plug in the switch and attach ring terminals to power and ground. That's it. One direction on the switch should be low speed, center is off, opposite direction is high.


1987 Monte Carlo SS, Flowtech Headers, True Duals Jet stage 2 chip, KN filter Accel 300+ ignition, M/T ET Streets
Best E.T. 15.415@87.39mph
#1062714 - 07/14/19 04:03 AM Re: Ramcharger fans won't run both speeds [Re: Dan The Man 920]  
Joined: Jan 2000
Posts: 4,361
mmc427ss Online content
15+ Year
mmc427ss  Online Content
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Joined: Jan 2000
Posts: 4,361
Pottstown, Pa
Gotta link to the install instructions? Could't find any useful info on their website.
http://www.casperselectronics.com/cart/

Bob

#1062716 - 07/14/19 07:59 AM Re: Ramcharger fans won't run both speeds [Re: Dan The Man 920]  
Joined: May 2009
Posts: 1,942
Richie Cat Offline
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Richie Cat  Offline
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Lake Ronkonkoma, N.Y.


83 SC, 355 w/TPI
#1062719 - 07/14/19 05:50 PM Re: Ramcharger fans won't run both speeds [Re: Dan The Man 920]  
Joined: Jan 2000
Posts: 4,361
mmc427ss Online content
15+ Year
mmc427ss  Online Content
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Joined: Jan 2000
Posts: 4,361
Pottstown, Pa
Two ways of controlling fan speed:
If the fan, fans have a low and high speed, meaning three wire plug per fan then just a toggle switch can be used to run a fan at low or high speed.

If the fan, fans, only have two wires per fan then a toggle switch won't run them on anything but a high speed. You need a fan speed controller to have more than a high speed.

Hoping you have read through this age old post of fans here:
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=183709#Post183709

I do believe the control of the electric fan needs to be done by something other than the human fingers. Using a manual switch after looking at the temp gauge doesn't cut it, usually to late.
So far the AutoCool unit installed on the Spal Dual fans has worked seamlessly. This info is at the end of the above post.
Yesterday 90 degrees, took the car out for a "quick" run, using an infrared thermometer saw 178 at the inlet hose connection to the rad idling back in the shop. The stat is a 180. No reason to think about the fan system again, it's automatic just like the factory fans run by the PCM.
Bob

#1062721 - 07/14/19 08:47 PM Re: Ramcharger fans won't run both speeds [Re: Dan The Man 920]  
Joined: Dec 2007
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SSLance Offline
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SSLance  Offline
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Posts: 5,927
Peoria, AZ
Ramchargers have a green and a yellow trigger wire. If you power the Green OR Yellow wire, both fans will run on low speed. If you power BOTH the Green and the Yellow wire, both fans will run on high speed.


Lance
1985 Monte Carlo SS Street Car

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