I have a 2001 mazda tribute lx v6 that I have recently started having coolant issues with. The coolant light came on randomly last week, I pulled over and filled it just barely above the suggested line and went on my way. The next day same thing except this time when I parked coolant was steadily dripping from the front passenger. I had the radiator, hoses, reservoir and water pump replaced in January (they were all the original parts and in bad shape) so far I have replaced the thermostat and the water pump again today hoping that might be the issue but it's still pushing out of the overflow (as far as I can tell) and I'm having to replace coolant every time I drive a few miles. It has never overheated and I have always pulled over immediately as soon as the light comes on.
Any other ideas on what I can check?? I really need to figure this out so I can get back to work.

 

When you start the engine, the overflow fills and overflows?

"Dripping from the front passenger", you mean outside the vehicle right? The reservoir bottle is filling and overflowing?

Best case, your reservoir bottle cap has failed and it's opening to let out the water instead of allowing the correct pressure to build.

Worse case, blown head gasket is pressuring the coolant system forcing the fluid out of the overflow bottle.

Start with the bottle at correct level then walk through what happens to the bottle when you start the car and let it come to full temp.

 

I figured it out, I replaced the entire reservoir and haven't had a single issue since.

 

It was probably the bottle cap.

That cooling system plumbing is a ton of fun!

Nightmare of hoses and plastic connectors.