2001 Mazda MPV -ES 135,000 miles. Coolant reservoir needs constant filling. Recently had the rear heating/cooling unit water pipe manifold replaced,which was leaking anti-freeze. That is now resolved, but I still need to fill the reservoir constantly. Do I need a new thermostat, or something else?

SOURCE: cold air coming from rear vent of 2000 mazda mpv

Your ventilation shutter is not closing properly.

SOURCE: Mazda MPV Coolant Loss (but no overheat)

i had the same thing on my wifes 2000 mpv van...the ends of the radiator are made of some sort of composite type material....it had a slight crack in it....wasn't obvious until it got worse and started streaming water from it when warmed up....even after it cooled enough not to be spewing it was hard to actually see the crack though a few inches long....was hard to even see where the water and antifreeze mixture was coming from until i took out the radiator

Romy Kettlewell

• 154 Answers
• Posted on Aug 07, 2009

SOURCE: Intake manifold runner control stuck closed?

you don't have to replaced the manifold just the runner control. see this all the time at work the part is about 175.00 and an hour and a half to install. your local dealer should be able to fix this for you

SOURCE: I have a 2002 Mazda MPV 6 cylinder. The 3 spark

http://www.imazda.com/forums/showthread.php?t=3059

this should work.

SOURCE: 2003 Mazda MPV ES that idles very rough when warm

that means could be vacuum leak