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84 upgrade

 
Old 03-07-2019, 08:54 PM
  #101  
Radioway
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Originally Posted by 84 4+3 View Post
That is the ecm one. The fan is controlled solely by a heat switch. Replacing the fan one with the wrong sensor type will cause it to not work. The sensor you need for the fan in the passengers side head is this One.
Thats the one i replaced and broke the plug
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Old 03-07-2019, 09:04 PM
  #102  
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Originally Posted by Radioway View Post
Thats the one i replaced and broke the plug
NVM im an idoit!!! I see what your saying now and how i screwed up. Ordering correct stuff now. Thank you very much.
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Old 03-07-2019, 09:49 PM
  #103  
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Originally Posted by Radioway View Post
NVM im an idoit!!! I see what your saying now and how i screwed up. Ordering correct stuff now. Thank you very much.
Its all good. You just put the dash sender in there instead of the switch. Check out this guys video, he explains it well.
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Old 03-09-2019, 02:29 AM
  #104  
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Originally Posted by 84 4+3 View Post
The sensor you need for the fan in the passengers side head is this One.
That CTS (coolant temp switch) is rated at 200 on/185 off. That 185 deg off temp may be too cool, unless you're running a 160 deg thermostat. If you're using a 180 or higher thermostat, the engine may never get cool enough to turn off the switch, so the fan will run continuously. You don't need all that other stuff in that kit, either.

I'm using an ACDelco D1855B CTS in my '84, and it works great! If the engine is idling for a long time, the fan will cycle on and off, just as it should. This CTS is rated at 215 on/200 off. The connector you need should be available at your favorite auto parts store, Dorman 85140. It's also available at Rock Auto: https://www.rockauto.com/en/moreinfo...041196&jsn=479

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Old 03-09-2019, 05:50 AM
  #105  
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Originally Posted by Hot Rod Roy View Post
That CTS (coolant temp switch) is rated at 200 on/185 off. That 185 deg off temp may be too cool, unless you're running a 160 deg thermostat. If you're using a 180 or higher thermostat, the engine may never get cool enough to turn off the switch, so the fan will run continuously. You don't need all that other stuff in that kit, either.

I'm using an ACDelco D1855B CTS in my '84, and it works great! If the engine is idling for a long time, the fan will cycle on and off, just as it should. This CTS is rated at 215 on/200 off. The connector you need should be available at your favorite auto parts store, Dorman 85140. It's also available at Rock Auto: https://www.rockauto.com/en/moreinfo...041196&jsn=479

Mine is 230 on and 220 off
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Old 03-09-2019, 07:52 AM
  #106  
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Originally Posted by Hot Rod Roy View Post
That CTS (coolant temp switch) is rated at 200 on/185 off. That 185 deg off temp may be too cool, unless you're running a 160 deg thermostat. If you're using a 180 or higher thermostat, the engine may never get cool enough to turn off the switch, so the fan will run continuously. You don't need all that other stuff in that kit, either.

I'm using an ACDelco D1855B CTS in my '84, and it works great! If the engine is idling for a long time, the fan will cycle on and off, just as it should. This CTS is rated at 215 on/200 off. The connector you need should be available at your favorite auto parts store, Dorman 85140. It's also available at Rock Auto: https://www.rockauto.com/en/moreinfo...041196&jsn=479

That's my bad, I was just using that as a reference.
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Old 03-09-2019, 07:56 AM
  #107  
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Originally Posted by 84 4+3 View Post
That's my bad, I was just using that as a reference.
My new one should be here next week. The factory one was turn on at 228 and the turn off was 220 i think. So i ordered a turn on at 230 and off at 220
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Old 03-09-2019, 10:43 AM
  #108  
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Originally Posted by Radioway View Post
My new one should be here next week. The factory one was turn on at 228 and the turn off was 220 i think. So i ordered a turn on at 230 and off at 220
That sound about right. They fluctuate a few degrees anyway.
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Old 03-10-2019, 08:49 AM
  #109  
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Originally Posted by Radioway View Post
Mine is 230 on and 220 off
My 86 is the same. I have been considering a lower temp fan switch personally.
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Old 03-11-2019, 10:19 PM
  #110  
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Well the right parts came in today but it still didnt turn on. So i guess im going to rig a manual switch :/
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Old 03-11-2019, 10:42 PM
  #111  
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I didn't go back and read the entire post, but have you checked the relays to see if there is an issue there ? And/or other fuses, the wiring etc ? You could be chasing an entirely different issue if it is not turning on with a new switch. I know some of the relays are interchangeable and you might be able to just swap 2 around and see if it makes a difference.
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Old 03-12-2019, 01:00 AM
  #112  
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Originally Posted by Radioway View Post
Well, the right parts came in today but it still didn't turn on. So i guess I'm going to rig a manual switch :/
Can't you figure out why it doesn't work? Why would you want to be continuously worrying about whether you should have the switch on or off? It's so much easier if it's automatic! If you connect the CTS wire to ground, does the fan run? How hot did your engine get before you gave up? What is the part number of your new CTS?



If you insist on using a stupid switch, this can be done by connecting to wires that are under your dashboard. You don't need to go thru the firewall.

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