Losing Coolant Fluid
 

I have a 2002 MPV which just turned 100K.
We love it, although we have had a few problems.
Last winter it would not get warm. I suspected the thermostat, and the garage fixed it. They told me that I was correct, that it was the thermostat.
This summer, it got hot, so I checked the coolant level. It was low, so I filled it. Problem resolved. Happened again, same fix. Now I'm wondering if that was my problem last winter.
But, the big question is: where is the coolant going?
I saw an old post that said the reservoir was split.
Any other possibilities? Engine seems to run fine, no coolant in oil.
Thanks for any ideas.

RE: Losing Coolant Fluid
 

hi mate if you have rear heater controls just check the floor behind the rear wheel for any coolant leaking there.

my friends MPV which is 2003 model is just had this problem this is the link it'll save me explaining on here.

https://www.mazdaforum.com/m_81202/tm.htm

it might be something you've not checked, i'll be honest i was suprised coolant was leaking from the rear wheel arch

RE: Losing Coolant Fluid
 

Thank you, Eddieace.
I will check that out ASAP.

How did you fix the trouble?
 

Rear wheel may be water from rear a/c unit/

I seem to be loosing coolant through a piston or two. I get abnormal engine vibration and my coolant reservoir caps seems to want to blow out. Can this be diagnose with the onboard computer?