Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

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-   Engine, Exhaust, Transmission (https://www.ft86club.com/forums/forumdisplay.php?f=8)
-   -   Water temp. (https://www.ft86club.com/forums/showthread.php?t=73059)

Reaper 08-28-2014 12:23 AM

Water temp.
 
Ecutek is accurate and the obd2 temp (obviously) gives me the right temp but my factory temp gauge never goes past a certaint point. I noticed it awhile back when I had a fan malfunction and despite high temps the gauge never even passed the halfway point. Thankfully I was monitoring it in other ways. But I haven't been able to figure out why my factory gauge is so far off. Anyone else experience this and have a fix?

Falcon 08-28-2014 02:09 AM

Works as intended :(
Factory gauges for Fuel and Water Temp are pretty useless.:thumbdown:

Turdinator 08-28-2014 03:20 AM

How high did the temps get? The factory guage won't move in a linear fashion to water temp. It will stay halfway over a temp range say from 175 - 250 etc (those are made up numbers) It may as well be a dummy light.

Guillaume 08-28-2014 03:58 AM

The fix would be an additional gauge. This works great for me : http://www.ft86club.com/forums/showt...ight=Pivot+DXW

Reaper 08-28-2014 05:10 PM

Guys I understand. What im trying to figure out is does the voltage from the sensor go through a resistor or something before going to the gauge? Some cars do this to prevent fluctuations on the gauge and I think ours does. I just don't know how it works in our car.

The sensor varies voltage and the gauge moves based on voltage so there should be a way to make it function more accurately. I was hoping we could figure out how.

Temp was 230 according to water temp gauge and ecutek but oem gauge was still below half where it always was. Im sure another few degrees and it would have swung full into the red. But if the ecutek can see an accurate temp then theres a way to get the gauge to do it as well.

King Tut 08-28-2014 05:14 PM

Mine always seemed accurate. I saw it rise past half way and then back down again while in traffic.

Turdinator 08-28-2014 08:21 PM

Quote:

Originally Posted by Reaper (Post 1922045)
Guys I understand. What im trying to figure out is does the voltage from the sensor go through a resistor or something before going to the gauge? Some cars do this to prevent fluctuations on the gauge and I think ours does. I just don't know how it works in our car.

The sensor varies voltage and the gauge moves based on voltage so there should be a way to make it function more accurately. I was hoping we could figure out how.

Temp was 230 according to water temp gauge and ecutek but oem gauge was still below half where it always was. Im sure another few degrees and it would have swung full into the red. But if the ecutek can see an accurate temp then theres a way to get the gauge to do it as well.

I think you will find the guage is controlled by the ECU and not a direct wire to the sensor.

cdrazic93 08-28-2014 11:20 PM

If in the event of a radiator blow and an engine overheat or possible engine seize, and there was a faulty gauge at play would the warrenty cover that?


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