Water pump and thermostat

[jamie9048]

Ive spent the day changing the thermostat it opened at close at boiling point, but was ment to open at 86*c.

So I was confident I`ve fixed the car only to fire up and find that it still runs hot I wonder if the water pump is working correctly if at all?

The bottom hose from the thermostat is cold as well even though the bottle is steaming hot the guage is saying 100 but the pipe is cold it has collant in it and is bleed.

on the bottle should I see coolant being pumped in at the top?

[Pirvu Eugen]

Is a big chance that you have the plastic water pump....remove the termostat...make another test....iff is the same..then the radiator fins are blocked or the pump is gone.
Goodluck!

[jamie9048]

I`m going to whip the water pump off tomorrow I presume its on the timing gear

Is there a upgrade for the water pump doing away with the plastic impellers maybe replacing with alloy?

[Pirvu Eugen]

just to chage the entire pump....
hmmmm alot off work and coolant loss
goodluck!

[jamie9048]

is it worth getting a rs2 pump?

[chezz]

Is the thermostat fitted correctly? It fits both ways, one way allows water to pass and the other destroys your engine...

[jamie9048]

what is the right way

Ive fitted it with the open side toward the engine

[AndyP]

What do you mean by the open side?

It should be fitted like this

[driftin jo]

If you want to test the pump just take the top hose off the radiator and rev the engine ,it should pump the water out quite well ,if not is is no good . You can catch the coolant in a bucket so you can put it back in .

[jamie9048]

yeah that is how its fitted.

when you say top hose do you mean the large one or the small one that goes to the bottle

[driftin jo]

yeah that is how its fitted.

when you say top hose do you mean the large one or the small one that goes to the bottle

large hose from head to rad .

[chezz]

Ive spent the day changing the thermostat it opened at close at boiling point, but was ment to open at 86*c.

So I was confident I`ve fixed the car only to fire up and find that it still runs hot I wonder if the water pump is working correctly if at all?

The bottom hose from the thermostat is cold as well even though the bottle is steaming hot the guage is saying 100 but the pipe is cold it has collant in it and is bleed.

on the bottle should I see coolant being pumped in at the top?

Is the new thermostat opening at the correct temperature?...I'd check it and eliminate it before pulling the pump out etc.

[jamie9048]

new thermostat fitted

[chezz]

Read my post again mate...you are assuming the new stat is opening at an earlier temperature than the old one when it may be a remote possibility that it is no better than the one you have just removed. Just because it is new does not mean its operating as it supposed to...I'd be inclined to test its opening temp and remove it from the equation.

[jamie9048]

Oh sorry did`nt read it properly I`m going to do the water pump and belt any way for peice of mind and I`ll check the new thermostat