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3.2 - high temperature

G

Gstockman

New member
Hi

Following a recent motorway run and around an hour in town with fairly long periods of standing in traffic I noticed the temp gauge on my 3.2 was higher than usual.

It usually gets to and stays at just under the first mark. On this occasion it got close to half way before dropping again when I was back on the motorway.

I do drive quite a number of motorway miles but I haven't before followed a long run with long periods of standing still as I did this time. So, I guess that might be the answer ?

I'd welcome any thoughts on whether these circumstances could quite normally result in a high reading or whether it seems odd ?

It has plenty of oil and and the fan belt was changed recently so should be OK.

Thanks
 
Sounds to act just as mine does only going up gauge in traffic and coming down again at cruising. Might be worth checking the thermostat is opening. Feel under the sill on oil pipes to see if getting hot with the gauge indicating high(relative)
Geoff
 
ORIGINAL: nathan 1981 930 G50

To get the oil to warm up as quickly as possbile just leave the engine at idle.
Click to expand...

From what I understand that's pretty bad thing to do, from cold and at idle these cars run rich which does your valve guides no good at all. As per the owners manual - startup, drive away and keep it sensible for the first 10-15 minutes.
 
yeah echo big nige's comments!! deffinateley start and drive (gently) until warmed up - then drive sensibly (but more spirited)!![;)][;)]
 
All interesting stuff but maybe I should re phrase my question.

Essentially, I'm asking whether (assuming all is in working order) you just shouldn't get higher temps regardless of the situation ?
 
The 'best' and the factory recommended way to get the engine oil to the correct temperature is do drive it until that temperature is reached. Leaving a stock air/oil cooled 911 at idle in the hope it reaches correct operating temperature is absolutely not the way to do it. [:(]
 
You may be correct, but that would never happen in my 3.2 carrera. I simply couldn't drive it hard enough to get him that hot. I know my thermostat is not letting by as the oil pipes up front don't get hot. Same for my 930.
On an Autobahn or race track in the 930 it would be possible but I still find it hard to believe that my 911 would get hot enough.
 
ORIGINAL: Gstockman

All interesting stuff but maybe I should re phrase my question.

Essentially, I'm asking whether (assuming all is in working order) you just shouldn't get higher temps regardless of the situation ?
Click to expand...

Let's hope some more 3.2 owners comment as I think your car is fine, maybe mine has a problem too.
 
I notice some changes during motorway traffic, the gauge is usually very stationary once up to temp. It will creep up a touch if you are seriously pushing on, and will obviously rise if you suddenly hit traffic after abit of a thrashing. But provided all settles back down with normal driving I wouldn't worry about it.
 
I agree with Nathan, Mr. Stockman's car seems normal, I would have expected the temperature to have risen after some hard motorway work and then sitting in a traffic jam as this simulates allowing the car to idle as Nathan suggests. What's important is to check when the temperature is rising that the stat opens and the oil circulates the cooler, this can be done by checking the pipes running the length of the car on the offside are at engine temperature.
There was a thread entitled "oil cooler on 87 Coupe" started on 31/10/07 which may help.
Al
 
As a passing 964 owner I can't help reacting to the "let it idle and warm up" routine. When an engine starts from cold it is naturally over fueled (as has already been stated) and at idle it is running with the barest minimum oil pressure after only a few minutes. If you had to pick the absolute worst case scenario to leave an engine running - THAT'S got to be it. Oil washed off the bores by over fuelling, precious little oil being pushed around the bearings and cams etc. etc. You certainly won't find me doing it - but it's your choice.

I don't know about the 930s and 3.2s, but my 964 gets the oil thermostat open after about 10 minutes of quite normal driving - and I won't push it over 4,000 rpm until it does!!!

Regards

Dave
 
Hi

Regarding warming the engine on idle, as these are dry sump engines, I think you are only warming the oil actually in the engine at idle, as soon as you pull away, the cool oil from the dry sump tank is pulled into the engine. So you need to have all the engine oil from the reservoir tank up to operating temperature (this is only my theory..)

On my old 32., and my current 993, the only way to get the oil hot enough to hit the mid mark on the oil temp gauge is to either be on a track, or idling in a traffic jam (first time it got this hot, I was worried by the cloud of vapour coming from the front wheel arch, until I was advised it was rainwater that had been sitting on the oilcooler evaporating when the hot oil hit it :rolleyes:)

Rgds

Pete
 
ORIGINAL: Computamedic

As a passing 964 owner I can't help reacting to the "let it idle and warm up" routine. When an engine starts from cold it is naturally over fueled (as has already been stated) and at idle it is running with the barest minimum oil pressure after only a few minutes. If you had to pick the absolute worst case scenario to leave an engine running - THAT'S got to be it. Oil washed off the bores by over fuelling, precious little oil being pushed around the bearings and cams etc. etc. You certainly won't find me doing it - but it's your choice.
Regards

Dave
Click to expand...

I agree with you, I am not suggesting anybody does this to a cold engine.
 
ORIGINAL: Computamedic

I don't know about the 930s and 3.2s, but my 964 gets the oil thermostat open after about 10 minutes of quite normal driving - and I won't push it over 4,000 rpm until it does!!!

Regards

Dave
Click to expand...

IIRC the 964 engine doesn't actually have an oil cooler like the 911 and 930 does so therefore our thermostat for the front cooler may not need to open on a cold day at all.
 
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