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

JET fan switch install????????????????

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Old Jun 4, 2003 | 08:04 PM
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fast_TA_95's Avatar
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Angry JET fan switch install????????????????

I just bought a JET fan switch for my 95 Trans Am. It is a great mode because it turns on the fans at 178 degrees instead of 214. It reduces hydrocarbon build up in the cylinders and keep the awesome LT1 cooler for more power. BUT!!!!!!!!! the thing is so hard to install, im wondering if anyone has installed this mode on a LT1 i kinda of have a idea where it goes (between the 6 & 8 cylinders between the plugs but i got my car jacked up and took a flash light in the engine bay from underneath but i couldn't find the bolt in. I also heard that you can tap into a coolant line and it will read the temp that way. I just need to know what anyone has done to complete this install correctly. Please HELP!!!!!!
Old Jun 4, 2003 | 08:40 PM
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There is a plug in the passenger side cylinder head. I looks like a big set screw, but the hole is square. You can find it from above. Use a small mirror and a flashlight and look between cylinders 6 and 8. You'll need an 8 mm drain plug socket and a little leverage (I used a breaker bar and a piece of pipe) to remove it. And be prepared to stick the switch in there quickly when you get it out (or drain your coolant first). Also I wrapped my switch with teflon tape.
Old Jun 5, 2003 | 04:39 AM
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I just reprogrammed my PCM. I did not have to get dirty.
I did do this on my 88 IROC and dang near killed myself.
I too thought, pull it out real quick put new one in and not lose too much coolant. Well, I am laying under the car with my droplight and pull the sensor and coolant comes rushing out and I am blinded.
I shake the coolant off and notice to my right that I am laying in a puddle of coolant with a droplight laying in the coolant with me.
I grabbed the droplight and flung it out from under the car and it bit me the whole way.

Just a reminder, Be Safe.
Old Jun 5, 2003 | 03:48 PM
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JET sucks.along with all of thier products. I would just turn the fans on sooner in the ECU.
Old Jun 5, 2003 | 09:59 PM
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Bud M's Avatar
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Originally posted by RdRacerZ28
JET sucks.along with all of thier products. I would just turn the fans on sooner in the ECU.
BS. This product works fine.
Old Jun 5, 2003 | 10:13 PM
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Originally posted by Bud M
BS. This product works fine.
I don't see why it wouldn't.

If the plug is too hard to get to, just get some fittings to make a "tee" in one of the heater hoses and put your sensor there. You may have to run a ground wire to your tee for the sensor to work.
Old Jun 5, 2003 | 10:34 PM
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Originally posted by shoebox
I don't see why it wouldn't.

If the plug is too hard to get to, just get some fittings to make a "tee" in one of the heater hoses and put your sensor there. You may have to run a ground wire to your tee for the sensor to work.
This is what i've done and it work just fine without loosing half your coolant out the block. I use a brass t-fitting cut about 1" rubber hose off the return lines. Hook up all the wiring and hook up a ground wire on the T-fitting, and my fans work just fine. All this in 15 min. to install. I think i might have that t-fitting in my web page so you can see what it looks like.

Vinny
Old Jun 6, 2003 | 08:04 AM
  #8  
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IT works because they don't make it.sorry. All of the products except one.
Old Jun 6, 2003 | 12:18 PM
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I am just wondering why you are going to all this trouble for a fan switch. You can just install a manual control fan switch to turn the fans on whenever you want. The 95s have high and low speed. Low is good for most times and keeps it about 190 or so, while high will keep it at 180 with the AC running on a hot day.

It still works just like it did before the change. The fans will still come on at the stock ~215 degrees, so if you forget, you’re not going to fry anything.

The cost is about $10 worth of wire and parts for better control. There are a couple of diagrams showing exactly which wires to connect and how.
Old Jun 6, 2003 | 08:05 PM
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Bud M's Avatar
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Originally posted by llafro
I am just wondering why you are going to all this trouble for a fan switch. You can just install a manual control fan switch to turn the fans on whenever you want.
Because I don't have to think about it ever, it's automatic.
Old Jun 6, 2003 | 10:10 PM
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From: Macon,GA, USA
Originally posted by llafro
I am just wondering why you are going to all this trouble for a fan switch. You can just install a manual control fan switch to turn the fans on whenever you want. The 95s have high and low speed. Low is good for most times and keeps it about 190 or so, while high will keep it at 180 with the AC running on a hot day.

It still works just like it did before the change. The fans will still come on at the stock ~215 degrees, so if you forget, you’re not going to fry anything.

The cost is about $10 worth of wire and parts for better control. There are a couple of diagrams showing exactly which wires to connect and how.
that's what I did with mine and I love it. Or you could just wire it to a ignition wire and let it run as soon as you turn your car on. That's what my friend did with his TA
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