Hi all,

My engines overheating because the water isn't circulating the system.

There's an A/C compressor on the back of the water pump that I haven't connected anything to as the fiesta doesn't have ac. Do these holes mean the pump can't build pressure to push the water around?

I'm really not sure what's happening apart from that
Any help will be appreciated

 

How do you know it's overheating, purely by the gauge?
as with the fiesta/puma conversion, depending on which ECU you use, you may need to swap some wiring over on the ECU as the temp gauge will read backwards.

As for the AC compressor, it has absolutely no bearing at all on the water pump.this won't be your proplem. It's easily removed, it's only held on with 4 bolts but you will need a new shorter aux belt.

 

Awesome thank you

It's overheating because the fan doesn't kick in as the coolant isn't circulating, the water is stone cold even if I've run the engine for a while.

How would I be able to test if the wires are the wrong way around?

 

Maybe you have an air lock,
was the engine tested before fitting in the fiesta? Do you know condition of the pump and thermostat?
What is the temp gauge showing?
Are you getting hot air from the blowers in side the car?

I'd recommend joing the project puma forum, you'll find it very helpful while doing the conversion.

 

Tested for an airlock by running it without the cap on the coolant tank

I was told it was running fine before it was taken out the old car, will check the blowers today then.

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I'll head over to the forum to see, thank you

Temp guage does really move much, which lead me to believe the sensor senses the water temp and as that it isn't circulating it doesn't increase



Thanks for the help I'll head over to the puma forum

 

Doesn't sound like YOU need to swap the wires over for the temp gauge tbh, when that is the case, the gauge reads the opposite way around. Yours isn't.

Did you turn the heater dial inside the car to heat when you ran the car with the coolant tank cap off?

​​​​​Is the aux belt routed around the water pump pulley correctly?

Thermostat could be stuck?

Are any of the coolant hoses hot?

 

Ah ok, will have a check tomorrow aternoon

I didn't so it seems like theres more i can do and test, thanks for the help. Hopfully i'll be back with good news fingers crossed.

 

I couldn't wait haha

Heat does come from the blowers and the pipes get hot

However, i've just noticed now that the wheel from the water pump when turned by hand makes a 'gurgling' sound like its drawing water. When it runs only the outside of the wheel that the aux belt turns and there seems to be an inner wheel with a triangle pattern on it that doesn't turn. I don't know what this means or what it is.

 

You may need to get some pics up as I'm not sure what you mean about the water pump pulley.

Sounds like everything's working as it should, bare in mind theethe has to get quite hot before the fan will kick in.

Are you sure your not looking for a problem that isn't there?

If your getting hot air blowing through the vents into the car that shows the coolant is circulating to me.