Thread: An interesting observation (to me anyway)

That is kinda interesting Peter.
I guess this is part of the reason we pay substantially for our cars, The tech involved is pretty incredible when you think about it.
I've done a fair bit of towing with our car, and in some very hot weather too, and I can't say I've seen anything like that come up at all.
Looking at things like slowing down engine capacity etc when running low on fuel, and shutting off the air-con to alleviate heat buildup etc,, pretty cool ways to help protect our investments.

And I must get my Gap Tool and practice working with it

PeterJ. Have you checked for coolant leaks? Is the bottle level correct still? The temp gauge moving is an indication of a problem in my opinion. I would be checking for the underlying root cause.
Top radiator hose cut by the engine cover?
Top plastic water fitting the connects to the top hose (known as the thermostat housing even though there’s no thermostat in it)?

Like DJ said, also how old is the coolant? I believe your D4 is a MY13, so coolant would be about 6 -7 years old in the vehicle. Maybe time for a flush and /or concentration correction? Especially if towing frequently in hot conditions, your coolant has done a lot of hard work.

Yeah, thanks all for the input, I have checked and no fault codes, coolant level is exactly where it was when I did the service 2 weeks ago, exactly mid-range on the side of the bottle when cold, so no leaks. I take your point about the age of the coolant but it should still be OK. I have already changed the troublesome plastic housing so no worries there and checked the top hose when I first read that thread, great thing this forum! I did notice a bit of a collection of bugs and grass in the collection of heat exchangers there at the front, so I am going to pull the grill and have a bit of a clean out, but it's not much. While I would expect to loose coolant if the system was not holding pressure I think I will have a look at that as well, stranger things have happened.

Has any one with a diagnostic tool looked at EGT, I would be interested to know expected range and limits. Next time out with the van I think I will set up a more comprehensive data logging exercise.......just for the fun of it.

Peter

Coolant should be change every 12mths or so.

A question, did the car loose power when all this happened??

Originally Posted by Redback

Coolant should be change every 12mths or so.

A question, did the car loose power when all this happened??

Umm, not any OAT or HOAT, that's the point of them, they can go 4/5/6 or more years.
As well as not having silicate dropout and better heat transfer.

Originally Posted by Redback

Coolant should be change every 12mths or so.

A question, did the car loose power when all this happened??

What on earth? Red coolant is around 8-10 years. Land Rover spec it changed every 10. Even if you halve that, it’s not 12 months. Do specific gravity testing of it to actually check whether it’s still functional.

Dunno how that happened, should be 10yrs or so, I was responding to the 6 or 7yrs old assuming he suggested it be changed.