On the verge of overheating up steep hills

[billy739]

short the relay out above the fuse box , thats full (2nd speed)

1st (slow speed) is the usual live from the fuse box , fan switch ,resistor(maybe b4 switch , cant remember) , fan

[pierce]

Cheers

[Titus A Duxass]

bigger wheels mean you go down the box earlier on hills I have found

Agreed.

[California Dreamin]

At around £14.00 for a good quality Merle thermoswitch..certainly worth changing if you have any doubts...

From 1986
Stage 1 cut in 89 - 94C cut out 81C
Stage 2 cut in 95 - 100C cut out 87C

Rad flush sounds like a good idea
Plus an oil cooler really does protect the oil from getting so hot that is fails.


Martin

[martinj]

I had a similar problem with a Volvo 740td, turned out the radiator was badly clogged up, replaced it and the car ran cooler than it ever had.My gauge fluctuates slightly on my westy but I have found that the water pump drive belt requires regular checking and tightening.I now know if it is a bit slack as the gauge rises further when on hills but the belt does not squeal.

[pierce]

Just had a look over the engine, while checking which bits to buy and I noticed a loose wire tucked away out of the way.



Is this the switch for the aux water pump?

http://www.brickwerks.co.uk/shop?page=s ... ory_id=110" onclick="window.open(this.href);return false;

I had a similar problem with a Volvo 740td, turned out the radiator was badly clogged up, replaced it and the car ran cooler than it ever had.My gauge fluctuates slightly on my westy but I have found that the water pump drive belt requires regular checking and tightening.I now know if it is a bit slack as the gauge rises further when on hills but the belt does not squeal.

I have a bit of a squeel on start up but the belt tension seems ok, one of the reasons that I am going to replace the water pump. Such a pain to tension though.

At around £14.00 for a good quality Merle thermoswitch..certainly worth changing if you have any doubts...

From 1986
Stage 1 cut in 89 - 94C cut out 81C
Stage 2 cut in 95 - 100C cut out 87C

Rad flush sounds like a good idea
Plus an oil cooler really does protect the oil from getting so hot that is fails.


Martin

Merle thermoswitch, are they the ones on the side of the rad (getting confused by the amount of switches involved )

Has anyone used the thermostat from brickwerks that cuts in a bit earlier, worth buying?

http://www.brickwerks.co.uk/shop?page=s ... ory_id=110" onclick="window.open(this.href);return false;

[pierce]

Finally got around to fitting the bits, took it for a test drive 30 mins on the motorway and the temparature gauge just sat on the half way mark.

No power to the aux water pump even after fitting a new switch though, so will have to get the wiring diagram out