LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Cooling fan manual switch

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Old Feb 19, 2004 | 11:23 PM
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Question Cooling fan manual switch

Anyone have detailed instructions on installing a manual cooling fan switch, or a website that has instructions?
Old Feb 19, 2004 | 11:31 PM
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The basics of it are here. The location of the connector with the blue and green wires in it will likely be closer to the pcm on your 1994. Look by the bottom of the hood strut mount. You can probably get by with snap splice connectors instead of soldering.
Old Feb 19, 2004 | 11:38 PM
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Originally posted by shoebox
The basics of it are here. The location of the connector with the blue and green wires in it will likely be closer to the pcm on your 1994. Look by the bottom of the hood strut mount. You can probably get by with snap splice connectors instead of soldering.
Looks pretty complicated. Maybe I should go with a new tuning program instead. I'm not much of an electrical person. Thanks for the info though. I'll look thru it a couple of more times. Maybe it will sink in.
Old Feb 19, 2004 | 11:40 PM
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Adjusting fan ON temps with the pcm is really the nicer way to go. ...unless you have a specific need to switch the fans on.
Old Feb 19, 2004 | 11:45 PM
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Originally posted by shoebox
Adjusting fan ON temps with the pcm is really the nicer way to go. ...unless you have a specific need to switch the fans on.
No need really for the switch. Just heard some people had them and liked them. I'll go with the pcm adjustment. What's a goo temp. to have them come on? With a stock thermo and a 160. I use both.
Old Feb 19, 2004 | 11:49 PM
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Don't know what you're looking to spend, but I think I'm going to fork over the $60.00 and buy the SLP manual fan switch. I'm not good with wiring, and this thing's pretty much plug and play. Plus, its a three way switch-High Speed, Stock, Low Speed. I might go pick one up from them tomorrow.
Old Feb 19, 2004 | 11:52 PM
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Originally posted by Don't Look Back
Don't know what you're looking to spend, but I think I'm going to fork over the $60.00 and buy the SLP manual fan switch. I'm not good with wiring, and this thing's pretty much plug and play. Plus, its a three way switch-High Speed, Stock, Low Speed. I might go pick one up from them tomorrow.
By "plug and play" you mean no wire splicing or anything like that?
Old Feb 19, 2004 | 11:54 PM
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Originally posted by ead94z28
No need really for the switch. Just heard some people had them and liked them. I'll go with the pcm adjustment. What's a goo temp. to have them come on? With a stock thermo and a 160. I use both.
I think I am running 195 low and 205 high on mine and I switch between the thermos for winter. Some may say this is too high, but my fans hardly come on when I have the 160 in there and don't have to sit in traffic a lot. I don't particularly want my fans on all the time.

Your sig says you have pcmforless tuning. Are your fan temps already altered?
Old Feb 19, 2004 | 11:56 PM
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Nope. You can read the installation instructions on their website. Plug it into the one of the wiring harnesses, then run it through the firewall, and mount it in the desired place.
Old Feb 20, 2004 | 12:06 AM
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Originally posted by shoebox
I think I am running 195 low and 205 high on mine and I switch between the thermos for winter. Some may say this is too high, but my fans hardly come on when I have the 160 in there and don't have to sit in traffic a lot. I don't particularly want my fans on all the time.

Your sig says you have pcmforless tuning. Are your fan temps already altered?
No, I did not have the fan temps altered, however Bryan will send me a modified program if I ask him. Normal driving I run at a hair over 180, so 195/205 or 200/210 might be good.
Old Feb 20, 2004 | 12:07 AM
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Originally posted by Don't Look Back
Nope. You can read the installation instructions on their website. Plug it into the one of the wiring harnesses, then run it through the firewall, and mount it in the desired place.
The website you are referring to is ls1speed?
Old Feb 20, 2004 | 12:28 AM
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No, www.slponline.com do a description search on switch, then pick the f-body one, instructions are there.
Old Feb 20, 2004 | 01:55 AM
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I made a switch using Shoebox's diagram....works great and the car doesn't have to be running for the fans to be on. I like it especially since the headers are going in, it will keep the underhood temps down more. Total cost $12.00 for switch, diodes, resistors, leds. I already had wire, solder, etc.

I put the resistors and diodes right on the back of the switch so when I take the panel out, everything comes out with it....

www.cardomain.com/memberpage/528388/2
Old Feb 20, 2004 | 12:01 PM
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Another version
Old Feb 20, 2004 | 05:15 PM
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Like SLP switch but with LEDs...



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