Water temp accuracy not so bad

[911monty]

Gauge accuracy is in the eye of the beholder! HAHA. My 98 kicks the low speed fans on when the pointer is in the center of the zero. The low temp thermostat (160 deg) controls on the left edge of the 180 hash mark. I replaced the sender since it seemed that all temps were indicating higher and swing was greater than what seemed logical. I'm comfortable with it now that I have verified everything working correctly but initially watching those swings was a bit well terrifying. I still am looking at some mods to minimize the swings though.

[Oldcarguy]

Originally Posted by 911monty

Gauge accuracy is in the eye of the beholder! HAHA. My 98 kicks the low speed fans on when the pointer is in the center of the zero. The low temp thermostat (160 deg) controls on the left edge of the 180 hash mark. I replaced the sender since it seemed that all temps were indicating higher and swing was greater than what seemed logical. I'm comfortable with it now that I have verified everything working correctly but initially watching those swings was a bit well terrifying. I still am looking at some mods to minimize the swings though.

Low speed fans on at the center of the zero seems more correct to me if your low speed fans are kicking in at 212F as mine are. Porsche may have implemented some step increments at some point to keep from freaking out the masses with temp swings.

[911monty]

Originally Posted by Oldcarguy

Low speed fans on at the center of the zero seems more correct to me if your low speed fans are kicking in at 212F as mine are. Porsche may have implemented some step increments at some point to keep from freaking out the masses with temp swings.

According to the Bently manual, Low speed = coolant above 96.75C (206.2F) and High speed 102C (215.6 F) or A/C pressure switch closed (refrigerant pressure above 18 bar/232 psi).

I would like to minimize the 35 degree swings since I can be in 100 F temp and 20 minutes later be in 60 F so I can swing through 70 degree +/- swing in less than an hour. Can't believe this is good for metal parts expanding and contracting so quickly.