The dummy gauge on my car is possessed. Stock stuff the temp was always 1/2 way. With Koyo radiator and e-fans, driving around used to be at 1/2 way, and an 1/8" down. Now the dummy gauge is about 1/4" from the bottom, just within the "operating temp" brackets. If I rev the car or boost, the gauge flys to 1/2 way, then drops back down once I get off the gas.
Is my car running that cool suddenly, or is my water temp sensor shot?
-Jeff

 

Mine goes to 1/2 on warm-up then goes to 1/4 during morning. Afternoon, it stays at 1/2 in the afternoon.

Don't have rapid fluctuation on/off boost like you though. Hook up an OBDII scanner and check if the sensor is giving a wild fluctuation in temps. Remember Mav's water temp sensor situation & he lost 10hp on his NA?

Jesse

PS - why don't we have quality temp guages in our cars yet ?

 

Just run autometer or something, they are better than stock ones in the cluster. If you got money, you can get decent ones like defi, greddy etc.

my .02

Rinku

 

Don't spend big $ on a water/oil temp guages - stepping motors are overkill.

 

Do you have enough water in there?

 

my water temp in the stock cluster will remain normal only when i press the gas and when i let off ....it shoots to the top and then bounces around untill i hit the gas again then it goes to normal..
ive got a s14 ws13 sr ......i rely on my greddy temp .....