Lower Temp Fan Switch-EXPERT advice needed
#1
Lower Temp Fan Switch-EXPERT advice needed
Hi everyone,
So after adding a lower thermostat I had bad drivability problems because it turns out I never reprogrammed my Eprom, which the average person really can't do. So , I had to put the stock 195 back in and am running hot (or what GM calls normal 235 degree) again, which I hate doing.
I have heard that there are fan switches which will kick the fan on at 195 instead of 220. Do you all think this is a better solution, or will I have the same problems in regards to computer calibration/ having to reprogram the EPROM?
Is it better to just ground the wires and run the fans continously or will the car run too cold and never reach proper operating temp? Would a toggle switch throw off the computer as well?
Oh for a pre-computer controlled car....so many less problems......
THanks
So after adding a lower thermostat I had bad drivability problems because it turns out I never reprogrammed my Eprom, which the average person really can't do. So , I had to put the stock 195 back in and am running hot (or what GM calls normal 235 degree) again, which I hate doing.
I have heard that there are fan switches which will kick the fan on at 195 instead of 220. Do you all think this is a better solution, or will I have the same problems in regards to computer calibration/ having to reprogram the EPROM?
Is it better to just ground the wires and run the fans continously or will the car run too cold and never reach proper operating temp? Would a toggle switch throw off the computer as well?
Oh for a pre-computer controlled car....so many less problems......
THanks
#2
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Car: 1985 IROC Z-28
Engine: 355
Transmission: TH-350
Axle/Gears: 3:73
I would wire it up to a relay, and let the fan temp switch do the work. (Wire up everything separately, so it works on it's own) That's what I did, even though my computer didn't control the fan. But since I went to a 2-fan set-up, I thought that was best.
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Car: black on red 92 rs
Engine: 305
Transmission: t-5
I thaught that the fan switch was jus plug an play? Am I missing somthing here. I changed mine out on my 92 lo3 A couple years ago. Did i forget somthing?
#4
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Car: 1985 IROC Z-28
Engine: 355
Transmission: TH-350
Axle/Gears: 3:73
Not if the computer controls the fan. You'll have to check to see when they started that. Read Willie's articles on fan set-ups and cooling.
#5
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Car: "02 z-28
Engine: LS-1
Transmission: 4L60E
Re: Lower Temp Fan Switch-EXPERT advice needed
Originally posted by Layne
Hi everyone,
So after adding a lower thermostat I had bad drivability problems because it turns out I never reprogrammed my Eprom, which the average person really can't do. So , I had to put the stock 195 back in and am running hot (or what GM calls normal 235 degree) again, which I hate doing.
I have heard that there are fan switches which will kick the fan on at 195 instead of 220. Do you all think this is a better solution, or will I have the same problems in regards to computer calibration/ having to reprogram the EPROM?
Is it better to just ground the wires and run the fans continously or will the car run too cold and never reach proper operating temp? Would a toggle switch throw off the computer as well?
Oh for a pre-computer controlled car....so many less problems......
THanks
Hi everyone,
So after adding a lower thermostat I had bad drivability problems because it turns out I never reprogrammed my Eprom, which the average person really can't do. So , I had to put the stock 195 back in and am running hot (or what GM calls normal 235 degree) again, which I hate doing.
I have heard that there are fan switches which will kick the fan on at 195 instead of 220. Do you all think this is a better solution, or will I have the same problems in regards to computer calibration/ having to reprogram the EPROM?
Is it better to just ground the wires and run the fans continously or will the car run too cold and never reach proper operating temp? Would a toggle switch throw off the computer as well?
Oh for a pre-computer controlled car....so many less problems......
THanks
#6
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Join Date: Jul 1999
Location: Katy, TX
Posts: 997
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Car: 1985 IROC Z-28
Engine: 355
Transmission: TH-350
Axle/Gears: 3:73
That's EXACTLY why all of the computer cr*p is gone! Now I can work on it without guessing, and without buying a laptop!
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