Temperature a bit high?

Cranium said:

Hi Trax,

After running this for a few months and the weather getting colder, I now have a better idea of what temperature this engine is running at.

Generally the engine runs at 70°c.
I went up a long steep hill today and the temperature rose to 80°c, then once on the flat went back down to 70°c.

The thermostat would not effect this as it opens at 82°c and in the warmer weather under load when the temperature did rise above 82°c, there was a sudden drop suggesting the thermostat had opened.

But this running at 70°c and only rises to just about 80°c is more likely the fan running too much?
At 70°c the thermostat hasn't opened?
I'm tempted to change the viscous fan coupling, I will investigate to see if there is a way to check if it is working right...

Although the thermostat could be stuck open, so I should check that...

What are your thoughts...?

Click to expand...

probably not getting worked hard enough to get to 82. they are known to be cooler engines... as you'll find out in winter when you wish the heater worked

if the stats stuck open then the pipes/rad should be warm.

i think it's probably all fine. just start worrying when it gets hot

trax said:

probably not getting worked hard enough to get to 82. they are known to be cooler engines... as you'll find out in winter when you wish the heater worked

if the stats stuck open then the pipes/rad should be warm.

i think it's probably all fine. just start worrying when it gets hot

Click to expand...

It probably is fine, but not hot enough to keep my feet warm!!!

Ok, thick socks and boots on whilst in the Landy in winter then....

I've designed and fitted a thermal regulator.



Safety clip keeps it in place..


Now runs at 83°c


Will remove the regulator after winter...

You think this is acceptable ?

that's just stopping the rad from cooling it down.. not really needed over here.

if i were you i'd just go and buy/fit an oem 200tdi 88C thermostat. It's cheap enough and rules out yours opening early. ERR2803

Worth noting I had 2 x bearmach thermostats that were both out of spec. For the extra £3 it's worth getting a genuine waxstat one

Just ordered the original Waxstat Err2803 Thermostat.
with a replacement gasket just in case...

I'll tell you what happens when I fit it, I will remove my thermal regulator once I fit the thermocouple...

I chased my order as it hadn't arrived and I was beginning to wonder when it would arrive and I discovered that the original WaxStat Err2803 Thermostat is no longer available, well John Craddocks are having difficulty sourcing it.
So I changed my order to the OEM Err2803 Thermostat which should arrive tomorrow.
I can fit that and at least see if the current thermostat is faulty, must investigate if the WaxStat has been discontinued...

A quick search results in 2 or 3 websites the page is no longer available, another website you have to call to place an order when other parts can be bought online.
This does suggest that the WaxStat has become difficult to get hold of...

Hmm I got mine off a surplus seller on eBay about a month ago - when I get home will look up the name for you

Ok thanks, will go with the OEM one as it is only a few pounds and will arrive tomorrow, but I might then order the WaxStat if I can and keep it in 'stock', I intend to keep this Land Rover for as long as I can afford to in my life, so spares are good!

I actually bought one over the counter last year from Craddocks, it was in a Britpart blue bag with a 'g' at the end of the part number and when I opened it in the shop it was a waxstat one

Marmaduke said:

I actually bought one over the counter last year from Craddocks, it was in a Britpart blue bag with a 'g' at the end of the part number and when I opened it in the shop it was a waxstat one

Click to expand...

The Waxstat one that I tried to order of their website had a G at the end of the part number

The thermostat has been replaced with an OEM 88°c. Two of the thermostat housing bolts snapped and had to be replaced. Good news is the temperature reaches 90°c underload, driving uphill on the motorway, but stays at 90°c. Cools to 83°c>85°c'ish otherwise. So the previous thermostat must have been stuck open...

Cranium said:

The thermostat has been replaced with an OEM 88°c. Two of the thermostat housing bolts snapped and had to be replaced. Good news is the temperature reaches 90°c underload, driving uphill on the motorway, but stays at 90°c. Cools to 83°c>85°c'ish otherwise. So the previous thermostat must have been stuck open...

Click to expand...

excellent.. apart from the snapped bolts.. not too bad a fix

Now I have heating and dark nights I have discovered the battery is low spec. and worn out, would not start the other day. Battery has now been replaced with a new higher spec. battery. Although the alternator is charging it doesn't seem to charge very well when the fan and lights are on so I'm getting a 65 amp alternator fitted. The old alternator has two medium brown wires and a thinner brown wire with a yellow mark on it going into a connector. The new alternator has terminals B+ for the main battery feed and D+ fit the warning light. I was told that the thick brown needs to be connected to the B+, I'm assuming that the two medium brown wires need to go to the B+ in my case and the thinner brown with a fleck of yellow to the D+, do you know anything about this?
I'm hoping for a good battery with excellent charge from the alternator so I can have the heater on all the time without worry...

Big wires to battery = B+
Charge light (small wire) = D
And if you have a tach that needs a feed = W

Marmaduke said:

Big wires to battery = B+
Charge light (small wire) = D
And if you have a tach that needs a feed = W

Click to expand...

Thanks Marmaduke, I expected that response, was cautious as I had been told the large wire, when I have two.
Will carry on with the plan to connect the two larger wires to B+ and the single small wire to D+...

You've got two wires as on older tratters there are two and this was changed to a single fatter one on newer models

Marmaduke said:

You've got two wires as on older tratters there are two and this was changed to a single fatter one on newer models

Click to expand...

Thanks, thought that was right, feel assured now