V6 Petrol Overheated

[lb81]

I would suggest that your engine has been running hotter than usual for some time. Nether of my V6's has the cooling fans come on that frequently that I regularly hear them. Only notice them running when Air Con is on. I would check that the thermostat is operating correctly. Not easy to do unless you have a good thermometer to check the temp at the top hose when the stat opens.
May actually be worth investing in a new stat anyway & having the coolant system flushed at time of fitting.

Cheers

Thanks that is what I now suspect. Not having anything to compare it too I assumed it was normal and it seems that its not, at least not unless the A/C is on etc.

The stat was only renewed a year ago with a genuine Mazda item but as its overheated I will probably renew anyway as I work round the system.

[lb81]

You will probably find that the V6 has a solid crank pulley and not the harmonic type that the diesel uses, also the v6 will probably use only 2 belts of the horizontal fine ribbed type, rather than the 3 belts (used on a grooved pulley)that the diesel uses.

Never the less it is worth checking that the pulley is in fact secure.

Good Luck.

Good point about the pulley, the diagram on LushProjects makes it look like its got a rubber section in between the two pulley wheels for the Aux belts. I guess there is only one way to find out!

[lb81]

Whats the best way to test the waterpump is working?

Is it a case of pulling of the top hose with the engine cold, rev the engine and depending on how wet I get indicates the pumps operation?

[cmm303]

Whats the best way to test the waterpump is working?

Is it a case of pulling of the top hose with the engine cold, rev the engine and depending on how wet I get indicates the pumps operation?

I recall somebody taking this approach with a diesel.
Stat removed to ensure a flow to the top hose when cold?