Discussion
Despite being mid engined (reduced air flow), these cars just take their time to warm up due to the huge 25 litre coolant capacity and the 8 litres of oil in the sump?
On the contrary, my LSx lump warmed up its 8 litres of oil pretty fast and if I wasnt careful it would hit 150°C without any effort at all.
On the contrary, my LSx lump warmed up its 8 litres of oil pretty fast and if I wasnt careful it would hit 150°C without any effort at all.
Rockster said:
IIRC, Porsche recommends keeping RPMs below 4200/4000 until the engine is warmed up
Really, I don't remember reading that. Nor can I find it http://www.911uk.com/docs/Porsche-Manual-911-996GT...Bert
BertBert said:
Really, I don't remember reading that. Nor can I find it http://www.911uk.com/docs/Porsche-Manual-911-996GT...
Bert
When starting the engine, be ready to drive immediately.Bert
Drive vehicle at moderate speeds and avoid engine speeds above 4,200 rpm during the first 5 minutes.
Page 53.
Rockster said:
When starting the engine, be ready to drive immediately.
Drive vehicle at moderate speeds and avoid engine speeds above 4,200 rpm during the first 5 minutes.
Page 53.
Thanks for finding it. Just to be pedantic that doesn't say what you said it did. You said Porsche recommend keeping those revs until the engine is warmed up. Now it certainly isn't going to be warmed up (in the sense of fully up to operating temp) in 5 mins. It's going to be not cold.Drive vehicle at moderate speeds and avoid engine speeds above 4,200 rpm during the first 5 minutes.
Page 53.
I only mention it not just because I am a pedantic knob
but because I've watched with amusement over the years as warming up myths get created around various performance brands. Mostly around design flaws admittedly.Bert
willfinch36 said:
belfry said:
On my 996.1 I can access the oil temperature via the climate control functions (together with much other useful data). It is simple to see the current oil temperate in degrees Celsius.
How??To switch from F to C:
Hold down the recirculating button then push both the temperature + - buttons.
To access diagnostics:
Hold down the Recirculating & Air up buttons for 5 seconds. The + - buttons go up and down through the list of "c" codes. The center vent button switches the left display between the "c" code and its actual value. Press the Auto button to exit.
Here is a list of what can be seen:
0c - ERL
1c - Oil Temp
2c - Inside temp. Sensor mounted in the aspirator assembly at the side of the dash.
3c - Outside temp. Sensor located inside the air inlet of the A/C unit.
4c - Outside temp. Sensor located in front grill of the radiator. The data is fed to the Climatronic from the instrument cluster. When not moving, the instrument cluster OBC temp display retains it's last setting until moving. This is to prevent heat emanating from the radiator affecting the temperature sensor. The A/C unit uses the lower of the two outside air temp values in determining fresh-air temp.
5c - Outside temp. (matches with OBC outside temp display)
6c - Coolant temp.
7c - Footwell discharge temp.
8c - Sun sensor (dash top)
9c - Sun sensor.
10c - Passenger compartment fan speed.
11c - Passenger compartment fan voltage.
12c - Temperature mix Flap command 1=COLD, 100=HOT
13c - Temperature mix Flap position
14c - Central Flap command
15c - Central Flap position
16c - Footwell/Defrost Flap command
17c - Footwell/Defrost Flap position
18c - Recirculation Valve command 1=OFF, 100=RECIRC
19c - Recirculation Valve position (feedback)
20c - Vehicle speed in kph, updating only once per second. (real speed, not speed+safety margin as in the speedometer)
21c - Engine RPM in hundreds. This too only updates once per second.
22c - ?
23c - ?
24c - Sun sensor, exterior lights switch & panel lights control (term. 58 & 58d voltage) - used for A/C panel display illum.
25c - ?
26c - ?
27c - ?
28c - Fan speed?
29c - ?
30c - Engine run time in seconds (255 max.)(=0xff)
31c - Timing counter
32c - Displays test
33c - Software version? Mine states 3.4
34c - ?
35c - Outside temp. from inlet sensor (filtered?)
36c - temp?
Rockster said:
BertBert said:
Really, I don't remember reading that. Nor can I find it http://www.911uk.com/docs/Porsche-Manual-911-996GT...
Bert
When starting the engine, be ready to drive immediately.Bert
Drive vehicle at moderate speeds and avoid engine speeds above 4,200 rpm during the first 5 minutes.
Page 53.
From a small sample of 4 engines, my old 997, my 991, my mk4 golf track car and the wife's gti, oil temp lags water temp by roughly 20C during warm up. All have oil over 50C witin 6 mins of cold start in town traffic.
Basically once you're water is over 80c, you're good to go. On the public road there's no way you can put these things under stress for more than a few seconds at a time.
A trackday will put a hundred times more stress on all the components.
On the road stop worrying and gun it when you get the rare opportunity.
Basically once you're water is over 80c, you're good to go. On the public road there's no way you can put these things under stress for more than a few seconds at a time.
A trackday will put a hundred times more stress on all the components.
On the road stop worrying and gun it when you get the rare opportunity.
My 981 Box S seems to take for ever to warm up. Today, ambient temp 12 degrees, the water temp got to the operating temp (middle of the gauge) after14 mins and 8 miles, at the end of the trip the oil was at 79 degrees after 18 mins and 9.7 miles of mixed A and B roads, admittedly in traffic and at a leisurely pace. Does this seem slow?? Need to drive for at least 5 mins before I can even think about putting the heater on or it just blows out cold air. 
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