help please still over heating

4.0 v8 1997 I've just tried bleeding the system again with the car at a angle. The car temperature gauge sat in the center. Car was ticking over for about 20 mins. Then the temperature went to the red with the light on. Car engine was not hot still had the expantion tank cap off so no pressure. But does have alot of pressure when the cap is on and taken for a drive. Any advise please. I can see the water flowing back into the tank. However radiator is Stone cold and the thermostat housing at the bottom of the radiator the water pipe is cold (from bottom of rad to thermostat) any ideas??? I've changed the temperature gauge and sensor. Also changed the radiator thermostats and expantion tank cap also flushed the system and new coolent put in but still the same problem. I don't know if there is a air lock as there is no bleeder valve. Can anyone shed some light on this for me please or no the best way to bleed the cooling system.

Possibly the water pump impeller is off the shaft, there seems to be no significant circulation of coolant . . .

A

Mania - try to keep the problem in one thread otherwise we'll get confused.

I've had another thought - I'll put it on your other thread.

OK sorry new to all this lol. How do I check the water pump impeller?

Take the pump out.
There's no other way.

So now thats 3 threads on this topic.....

Stick to one thread it makes it easier to follow and for responders to see what advice and result you have already been given.......

water pump !

as datatak said check the viscous fan as well.

i do have a spare waterpump for a p38 you can have it if you arrange collection. you'll just need a gasket.

if not they are about, £30 same for the viscous fan. don't get a britpart (****part) one

Where about are you?? Would really help me out

Surrey. Nr Guildford.

mania08 said:

Where about are you?? Would really help me out

Click to expand...

Add your location, someone local may help.

ukadamwest said:

Surrey. Nr Guildford.

Click to expand...

Jinx.....only I'm on the less posh side of G'ford

I'm in rugby

Stat jammed shut?

OP says he has flow to the expansion tank - thermosyphon won't do that, I wouldn't have thought.

Got to do the gas test (block test) to eradicate gasket/head failure.

I'd take the 'stat out and see what happens then.