Temp Sensor with f4i gauges
#1
Temp Sensor with f4i gauges
ok this is going to sound a bit random, pointless and somewhat interesting, but with the cold weather, the f4i gauge, and my original f3 sensor, my temp reads 220*f at start when its 50*f outside.
It climbs quickly to the 270 marker in under 30 seconds of running obviously, but there's a period there where the temp sensor is actually picking it up in cold weather before the red light comes on.
So i'm sure this crossed some of your minds --
I am wondering if there's a cheap alternative to a 40.00
600rr temp sensor (which involves me possibly breaking it off in my block) to drop the temperature.
Is there anyway to put something inline (like a resistor or something of that nature) on the temp sending wire that can change the temperature by 170*f? I don't know much about how the sensor works, but if it's possible, i'd like to know and at least try and attempt something of that nature.
EDIT: maybe some rheostats?
Yes.
THAT'S HOW BORED I AM>
It climbs quickly to the 270 marker in under 30 seconds of running obviously, but there's a period there where the temp sensor is actually picking it up in cold weather before the red light comes on.
So i'm sure this crossed some of your minds --
I am wondering if there's a cheap alternative to a 40.00
600rr temp sensor (which involves me possibly breaking it off in my block) to drop the temperature.
Is there anyway to put something inline (like a resistor or something of that nature) on the temp sending wire that can change the temperature by 170*f? I don't know much about how the sensor works, but if it's possible, i'd like to know and at least try and attempt something of that nature.
EDIT: maybe some rheostats?
Yes.
THAT'S HOW BORED I AM>
#2
That would be pretty trick. It seems as though if it is reading too high then it would be possible to throw a resistor in the mix and drop it down to be accurate. A rheostat would be great for fine tuning the temp. Maybe when I get home tonight, since I already have the thermo unit out of my F3. I will place the tip in some hot water with a constant temp and see if there is a way to dial it in with a rheostat and determine the proper amount of resistance. I hope this works, then I can take the $50 thermo unit from the 900rr back that I bought from the stealership.
Josh
Josh
#4
I've noticed this too. It seems like the temp may be off by like 170 degrees or something. I found this to be interesting and probably what we need to do. Link. It wont apply directly to the coolant fan, but for the temp sensor resistor. I will try and do some calculations tonight.
Last edited by Michael S; 12-15-2009 at 10:45 AM.
#5
however the biggest pain is installing it without breaking the f3 one.
plus it's fun, and a new way of doing it.
also, its like 3 bucks from radioshack.
i don't need to know the exact temp,
but a good +-20 should be good enough, plus i can do away with the red temp light
#6
I've noticed this too. It seems like the temp may be off by like 170 degrees or something. I found this to be interesting and probably what we need to do. Link. It wont apply directly to the coolant fan, but for the temp sensor resistor. I will try and do some calculations tonight.
i think it's going to come down to using 2 or 3 rheostats in a series to drop the total temp, and then measuring the drop across all 3, and then building a permanent resistance to wire in without them.
This is prolly going to take a week, but i'll keep you guys posted.
#7
#8
My calculations are pointing to a 4.7 Ohm resistor. But, I dont think that's right. Here's what info I have. Maybe someone else can figure this out.
Stock temp sensor
Temp Resistance
176F 45-60Ohms
248F 10-20Ohms
The gauges show 220F when it is 50F outside. Mine is the exact same as spicymeowmix. So the gauge is off by at least 170F. So I need to bring it down by that much.
Hell I think I'm just gonna pick up a variety pack of resistors today and start low..... I'll keep u guys posted!!
Stock temp sensor
Temp Resistance
176F 45-60Ohms
248F 10-20Ohms
The gauges show 220F when it is 50F outside. Mine is the exact same as spicymeowmix. So the gauge is off by at least 170F. So I need to bring it down by that much.
Hell I think I'm just gonna pick up a variety pack of resistors today and start low..... I'll keep u guys posted!!
#9
that's interesting,
i think it's going to come down to using 2 or 3 rheostats in a series to drop the total temp, and then measuring the drop across all 3, and then building a permanent resistance to wire in without them.
This is prolly going to take a week, but i'll keep you guys posted.
i think it's going to come down to using 2 or 3 rheostats in a series to drop the total temp, and then measuring the drop across all 3, and then building a permanent resistance to wire in without them.
This is prolly going to take a week, but i'll keep you guys posted.
#10
That would be pretty trick. It seems as though if it is reading too high then it would be possible to throw a resistor in the mix and drop it down to be accurate. A rheostat would be great for fine tuning the temp. Maybe when I get home tonight, since I already have the thermo unit out of my F3. I will place the tip in some hot water with a constant temp and see if there is a way to dial it in with a rheostat and determine the proper amount of resistance. I hope this works, then I can take the $50 thermo unit from the 900rr back that I bought from the stealership.
Josh
Josh