MY97 986 Water Temp

[djoa]

Originally Posted by CJ_Boxster

Well your first discription is alittle confusing but heres how it works, in hot weather (80+F) and even in 70F the temp gauge will sit on top of the 0 on 180. When the AC is off (meaning the snowflake is not lit on ac controls) the fans will turn on when the temp needle reaches the far side of the 0, until it drops to the near side of the 0 towards the 8.

With the AC on, the fans run 100% of the time and usually the temp needle will NOT go beyond the near side of the 0, unless you were racing the engine on the freeway for 10 minutes straight, then it'lll take some minutes of easy driving to drop back down to the near side of the 0 on the 180 mark.

The "0" of 180 is just an indication, acutally, I'm in HK and the temp guage is using Celcius, I just follow F. to explain. Anyway, somtime, the pointer goes beyong the 3rd mark.

After a normal drive and turn off the AC, the radiator fans are still on, I guess this is normal.


But the engine compartment fan is not always on. Even it turns on, the temp didn't drop much, let say only few degree drop and the coolant temp was 103C ~107C, high enough?

[NickCats]

Thanks for the explanation, CJ ! I have been wondering that for a long time. I noticed that the car runs considerably cooler with the AC on and I could not for the life of me figure out why

Nick

[pteam]

My 01S normal operating temp with AC on or OFF is in the middle of the 8 in 180. It almost never goes past the 8.

[CJ_Boxster]

Originally Posted by pteam

My 01S normal operating temp with AC on or OFF is in the middle of the 8 in 180. It almost never goes past the 8.

I heard someone on another forum say that the Needle's arent too accurate when trying to read temps due to the fact that the temp needles might be alittle off center from another temp needle... especially true for someone whos installed aftermarket gauge-face overlays.

[skip_168]

I usually don't pay atention to the needle too much because of the cycling of the radiator fans..

the only problem I had was the collant bottle slit down the seam, then I went through about 3 radiator caps to get one to hold the pressure indicated.. durring that whole time the car never overheated...

The big indicator I had was the coolant boiling over from the bottle..


my needle stays around the 180 mark....

if your temp is wandering farther than that, or the a/c high temp cut off activates, look for some problems. THe most common one I have seen is air in the system. the boxster has bleeders all over the car for getting air out of the cooling system, itz quite a pain sometimes...

[NickCats]

With the AC on when it's really hot ( it's been in the 90's here this week ) the temp is right between the 8 and the 0. With the air off, the temp is right in the middle of the 0.

According to CJ's explanation, I assume this is normal ?

[djoa]

Thx for guys comments.

I just found something new, i just drove the car and alomost hot the RED mark, I shut off the A/C and turn on the heat, the temp drop very fast, I suspect the thermostat or water pump got some problem. BUT, the stange thing is, the car does not have the water leak from water pump, hoses, bleeder valve, since last inspection on early July. I will get the service shortly, when my mech. receive the throttle cable, will fix it at once. I will let my mech focus on the thermostat.

Interesting thing is, I go thru other threads, some talked about the "00" or "01" coolant tank cap. Although mine is showing "01", I still buy a new (honestly, its chaep, give a try ^_^). The part no. on the cap shows "02" , but Porsche dealer sill calls it "01". I will change the cap tonite and keep you guys post!!!

[CJ_Boxster]

Originally Posted by djoa

The "0" of 180 is just an indication, acutally, I'm in HK and the temp guage is using Celcius, I just follow F. to explain. Anyway, somtime, the pointer goes beyong the 3rd mark.

After a normal drive and turn off the AC, the radiator fans are still on, I guess this is normal.


But the engine compartment fan is not always on. Even it turns on, the temp didn't drop much, let say only few degree drop and the coolant temp was 103C ~107C, high enough?

Well your fans probably didnt turn off that time when you off'ed the AC cause the temps were at the point of when the Car wants to trigger them, They will trigger and stay on till the temps drop about 3 degree's then the temp will gradually raise back up and then the fans will turn on again till the temp drops 3 degree's... its a never ending cycle.


The Engine compartment fan triggers at odd times, and usually for 5 minutes or less, unless its really hot then you'll hear it... Sometimes you think you might be hearing the engine compartment fan but it will be the Air-Injection pump for afew minutes. In otherwords, You'r fine.