Thread: TM2 Average Temperature Readings

90 degrees average, give or take a couple depending on the situation.

My sensor is bolted up to the front rhs of the head to a bolt that screws into the block. It is quite long. From this I get readings ranging from low 70's to 88 degrees on a hot day with the a/c on.
Regards
Robbo

Depends whether the sensor is mounted - temperature on the display in itself is not important - what is, is noting the temp when the engine is at normal operating temperature the setting the alarm at 10 - 20 degrees hotter.

On my V8 petrol I had the sensor at the front of the head in the airflow caused by the fan - indicated 70 degrees when water temp was 80 - I have now moved the sensor further along the engine where the cooling impact of the fan is reduced - haven't tested it yet.

So - if your standard operating temperature is xyz then stick with that - mine did not change much except when stopped in traffic when it went up 5 degrees. On the road it stayed within 1 degree of 70 irrespective of what I was doing but water temp was rising and falling.

Garry

Hello,
Thanks for the replies.
I'm getting about 90 degrees average temp(the sensor is mounted on the left hand side of the head near the rear of the motor) , I thought that maybe it should have dropped a little given the new radiator and a water pump that wasn't blocked with crud.
It seems that these TD5 motors reach a critical head temperatures reasonably quickly when given a bit of a hard time.
Perhaps ignorance is bliss in relation to head temps.

Cheers,

Jason

Jason,
my sensor is in about the same position as yours. Averages around 80-84.
when air temps exceed 40, aircon going flat out, sitting on 110kmh will get up around 85-88.

Dylan

Hello,
a few cordials and silly thought later.
Perhaps the sensor is getting false readings through radiant heat from the turbo and exhaust manifold(as the sensor is in the direct vicinity of both them). I'm thinking that an alternative mounting point of the heat sensor could provide more accurate/stable reading.

Are there any alternative sensor mounting points that anyone has used that are a bit further from the turbo and exhaust manifold??
I will look for one myself in the light tomorrow but suggestions are always good.

Cheers,

Jason

I have a D2a TD5 Auto with approx 146K on the clock and have had a TM2 monitor installed for a couple of months. The temperature sensor is mounted in the recommended position at the rear-left (passenger side) of the head.

Around town the temperature normally sits around 85-90 degrees, rising to 92 sometimes when idling at an intersecion etc.
On the highway when towing a 750kg camper trailer, it will sit on about 89-92 degrees. On a long, steep grade, particularly when the overdrive is not locked in, it can get up to 98 degrees but will come down again quickly when running down the other side of the hill.

Last weekend we did some beach work down south (Yeagerup Dunes) and it was sitting on about 92-93 when ploughing along the softish beach. When we tackled Calcup Hill, a very long steep sand climb, the temperature rose to 102 degrees which is where my alarm is set, a couple of minutes at a fast idle quickly brought the temperature back down to 92 degrees and off we went again. Through all of the above the OEM temperature gauge remained unmoved.

In all of above situations, the ambient temperature would be >25 degrees, sometimes >30 degrees.

Can anyone tell me what temperature on the TM2 is into danger territory with a TD5???

Certainly on the weekend, I would not have had any idea of the changing block temperatures if depending on the OEM temperature gauge. I don't know if the additional information from the TM2 is good for my sanity or not!!

Cheers,
Chris

Originally Posted by cjc_td5

Can anyone tell me what temperature on the TM2 is into danger territory with a TD5???


Cheers,
Chris

Hello cjc_td5

I got told(forgive me, I have forgotten their name) that 105 degrees is the correct temp to set the head temp alarm at, as this is the temp that the coolant starts to boil at, therefore creating hot spots in the head wherever the coolant does start to boil.

I have my alarm set at this temp(105 deg)

PS. If anyone has information to support or denegrate this information, it would be most appreciated.

Cheers,

Jason