Datatek
Well-Known Member
Could well be an air lock, they can be difficult to bleed. Do you have a trickle of water coming out of the little bleed pipe at the top of the RAD into the expansion tank?
The fact that with the cabin blowers on and the blends set to hot suggests it's just lack of flow through the radiator. Is the RAD evenly hot all over? Is the aircon condensor so full of shyte that the airflow is restricted?
The fact that with the cabin blowers on and the blends set to hot suggests it's just lack of flow through the radiator. Is the RAD evenly hot all over? Is the aircon condensor so full of shyte that the airflow is restricted?
Should I have a constant trickle of water in to the expansion tank?
Was the fan new when you replaced it?
A little at least. The metal bladed waterpump return a little less to the tank than the plastic variant. What year is it?
brianp38dse
Well-Known Member
You say the viscose fan works, they all spin but does it roar like a tank if not its not locking up,
when you first start it it should be noisy they go quiet then noisy again at temp.
when you first start it it should be noisy they go quiet then noisy again at temp.
Yes brand new fan
2001
Yep fan definitely works
Toyota Twonk
Active Member
Drill a hole in the bottom of the radiator and fit a drain plug.
Can get the sludge out then.
Can get the sludge out then.
Datatek
Well-Known Member
It's a new RAD and they have a drain plug.
Datatek
Well-Known Member
Do the rolled up newspaper test, new these days does not unfortunately mean good.
Please explain the rolled up news paper test
Toyota Twonk
Active Member
Power it up from the bottom then with coolant forcing the air out through the heater matrix..
Datatek
Well-Known Member
Go back to your Toyota twonk you clearly know sweet FA about the P38.
Datatek
Well-Known Member
Tightly rolled newspaper, engine up to temperature and idling, keeping hands clear, shove the end of the newspaper into the fan blades, if it stops, it's no good.
@Wayne890 please ignore this idiot and follow what Data or somebody who knows is about to explain
If it’s up to temp and the viscous fan kicks in it should rip a rolled up newspaper to shreds if you poke it in.
If it’s up to temp and you end up with a newspaper and a stalled fan then it isn’t working.
J
Thanks I will give that a go. Do the two small fans in front of the rad have anything to do with cooling the engine or are they just for the heating system. Is there a way of testing them? I’ve never seen them on
