Correct cooling temp

[bismillah]

Hi guys, I would like to ask for some information. I have a Defender Td5 and as soon as I got the Nanocom I noticed that the water temperature of my Defender came to a maximum of 82 degrees driving slowly with rare peak of 87 going fast on the highway and had not an idle temperature infact if I stopped or in the traffic the water temperature began to fall even reaching 75 degrees.

Reading the Nanocom's manual and after a quick search on internat I known that the hot temperature should be around the 88-89 degrees.

For fear of damage to the car I asked to a mechanic to replace the thermostat and while I take this opportunity to completely replace the coolant with a 50% OAT original Land Rover antifreeze.

Now the idle temperature is 89 degrees and is around 92 degrees going up in city and highway about 90km/ h with peaks of 94 on the highway going fast. (ambient temp near 5 degrees)

What do you think? Is Now the cooling temp correct? What temperature do you have on your Td5?

[djam1]

Hi guys, I would like to ask for some information. I have a Defender Td5 and as soon as I got the Nanocom I noticed that the water temperature of my Defender came to a maximum of 82 degrees driving slowly with rare peak of 87 going fast on the highway and had not an idle temperature infact if I stopped or in the traffic the water temperature began to fall even reaching 75 degrees.

Reading the Nanocom's manual and after a quick search on internat I known that the hot temperature should be around the 88-89 degrees.

For fear of damage to the car I asked to a mechanical to replace the thermostat and while I take this opportunity to completely replace the coolant with a 50% OAT original Land Rover antifreeze.

Now the idle temperature is 89 degrees and is around 92 degrees going up in city and highway about 90km/ h with peaks of 94 on the highway going fast. (ambient temp near 5 degrees)

What do you think? Is Now the cooling temp correct? What temperature do you have on your Td5?

Your original temps seem too low but I think your new thermostat has corrected that issue
Mine will run at 88-89 degrees around town and up to 94 on the highway on a hot day
You need to slow down or reduce load over 110 degrees

[OffTrack]

Your original temps seem too low but I think your new thermostat has corrected that issue
Mine will run at 88-89 degrees around town and up to 94 on the highway on a hot day
You need to slow down or reduce load over 110 degrees

The thermostat remains fully closed until 82°C and isn't fully open until 96°C. You shouldn't see temperatures below 82°C when the engine has warmed up. If you were seeing below 82°C when running it's a good indicator that the thermostat has failed in a fully open position.

Duane recommendation of 110°C being an upper limit is about right. Some sources suggest 115°C is the absolute maximum you should run a Td5 to. The ECU will begin engaging strategies to drop coolant temp once the temperature is above 110° so that does seem to be the point at which to start seriously thinking about letting the engine have a rest.

cheers
Paul

[bismillah]

So, are my temp now good? I wanted to be sure that now they are not too high

89 in idle - 92 at 90km/h - 94 at 130km/h with outside temp 5 degree. I have to warry if the temp go over 100 degree

[rick130]

They are fine, as mentioned, they were too low previously.

[nedflanders]

Thats the same sort of temperatures I get from my 90 TD5, big difference to cooling was cleaning the radiator as it was blocked from to many muddy crossings, once the intercooler was clear too it runs like a new car. Be aware if you have A/C on it will raise the temp a couple of degrees, as does driving style

[bismillah]

perfect! Thank you

[OffTrack]

Just thinking about the low ambient temperatures I remembered something I'd come across in RAVE. The Td5 thermostat element is exposed to 90% coolant direct from the motor and 10% coolant flowing from the radiator. In cold ambient temperatures this has the effect of increasing the operating temperature of the engine by up to 10°C compensate for the cold coolant coming from the radiator. This should mean that in warmer weather the thermostat will open earlier keeping the coolant temperatures in a similar range to what they are now.

cheers
Paul

[brian2go]

I have just fitted an Engine watch dog to my 03 130 td5 the sensor is located near the T/stat and the temp on idle is about 80 and when doing 100km it goes up to 89c , then if im going up a hill it goes to 92c then drops back to 87-89 when reached the top, reading the other posts would that indicate my stat could be open all the time and will need replacing, if so is it an easy task.

thankyou Brian

[bismillah]

Are the same temp I had before changing the termostat