engine watchdog sensor placement 4.5LTDV8

Hi,

Not directly relevant to your engine, but I fitted mine to the back of the engine block away from the exhaust manifold on my old 75 series Troopy. On my engine there is a lifting hook there firmly anchored to the block, so good thermal contact. Others have attached the sensor to the thermostat, but I reckoned that if I lose coolant, there'd be no circulation reaching the thermostat, so attaching to the block was better than to the thermostat.

The sensor responds quite slowly, which is probably intentional and ok unless you have a sudden major leak. My running temperature is surprisingly low - typically in the low 60's deg C, and up to 70 deg after a workout. As an alarm, I think it's fine, so long as the trip point is set a little above the highest likely operating temperature at that point on the engine. I doubt that actual placement is important - we are looking for out-of-the-ordinary temperature at the sensor, wherever it is.

HTH

John

bungarra

mine is only on a six cylinder but check out my blog.

I don't have one of these units on my Cruiser but I have a Scangauge 11 unit fitted and it reads the temp. Mine sits on 80Deg when towing and between 78 & 80 when normal cruising conditions.

On my 200 series I use a scanguage which says that the computer is reading a water temp of 80. It does rise on a pull up a range but quickly goes back to 80.

Alan

Thanks for those replys. I have the scanguage fitted and as the posts have said it is reading the coolant temp and mine is similar to those readings posted.

The reason for fitting the watch dog is that it will alert to a rise in engine temp long before the coolant temp causes the guage to rise and then you have to hope you notice it

where do you buy the TM 2 wtchdog from????

Cheers
Jeff

THanks Graham will check it out

Regards

jeff

don't have the cruisers or patrols coolant level alarms built in ?
I thought this is pretty much standard by now.
Surely the ECMs must have that info.

have fun
gmd