Technical How long does a metal vaned water pump last?

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Technical How long does a metal vaned water pump last?

I bled the radiator and the problem was still there. So I drained the coolant and flushed the system and then refilled.

Strangely as I re filled the coolant bottle, the liquid did not flow into the system but stayed in the bottle. Squeezing the top and bottom pipe had little effect. So I blew in to the top of the bottle (avoiding blow back) and the liquid level in the bottle dropped a little. I had to repeat this process several times to get enough coolant into the system to get it to come out of the 2 bleed points.

Then I ran the car expecting the level in the bottle to drop so I could re-bleed, but the level didn't drop very much at all. So I got the car up to temperature and the problem overheating is still there. Top and bottom pipes hot, radiator hot, heater hot.

I got the strong impression that the coolant just isn't circulating very much, if at all. So I assume this is either the water pump or the thermostat or a blockage somewhere?

Should I start with replacing the thermostat?

Thanks
 
I bled the radiator and the problem was still there. So I drained the coolant and flushed the system and then refilled.

Strangely as I re filled the coolant bottle, the liquid did not flow into the system but stayed in the bottle. Squeezing the top and bottom pipe had little effect. So I blew in to the top of the bottle (avoiding blow back) and the liquid level in the bottle dropped a little. I had to repeat this process several times to get enough coolant into the system to get it to come out of the 2 bleed points.

Then I ran the car expecting the level in the bottle to drop so I could re-bleed, but the level didn't drop very much at all. So I got the car up to temperature and the problem overheating is still there. Top and bottom pipes hot, radiator hot, heater hot.

I got the strong impression that the coolant just isn't circulating very much, if at all. So I assume this is either the water pump or the thermostat or a blockage somewhere?

Should I start with replacing the thermostat?

Thanks

You choose either thermostat, fan switch or heater gauge sender unit .
If you think coolant not circulating do thermostat.
To fill system remove a hose from heater matrix it's in engine bay easy access, put funnel in hose and fill through funnel. Make sure you set heater control to hot. Loosen bleed points etc
The tank at side of radiator is an expansion tank and only has a small hole at bottom through to radiator. With engine running the level this expansion tank is not likely to drop because there is no way of any air in the rest of the system to escape and no pressure above the coolant in the expansion tank to push coolant in tank into the system.

Trying to fill system through the tank is not effective and there is most likely air in your cooling system.
 
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Thanks.
Thermostat ordered.I will refill via the heater pipes as suggested
I was thinking that if I am going to drain the coolant again when changing the thermostat, I may as well replace the fan switch and temp sender at the same time
 
You choose either thermostat, fan switch or heater gauge sender unit .
If you think coolant not circulating do thermostat.
To fill system remove a hose from heater matrix it's in engine bay easy access, put funnel in hose and fill through funnel. Make sure you set heater control to hot. Loosen bleed points etc...

Trying to fill system through the tank is not effective and there is most likely air in your cooling system.

The hoses to the heater matrix run into a boxed in insulated section with a grill on top. Does that just come apart to expose the hoses?

The Haynes manual shows this for the 903cc, but not additional detail for the 999cc Fire engine (like mine)

Thanks
 
I had a 999cc years ago and think remember that the pipes were very easy but to get to ( fixed heater valve)
So give it a pull and see how it is attached. You may have to remove battery , but that's easy.
 
The hoses to the heater matrix run into a boxed in insulated section with a grill on top. Does that just come apart to expose the hoses?

The Haynes manual shows this for the 903cc, but not additional detail for the 999cc Fire engine (like mine)

Thanks
Take out battery, the hoses for Heater are on outside of box with grill on top possibly there is some type of synthetic stiff fabric covering the heater valve and heater pipes.

Sorry can't be more certain my panda was recycled over 15 years ago.
 
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