98 mazda millenia no heat. blow cold air. there is a canister at bottom of raditor, when replacig raditor the line to that busted and since replacing it i have had no heat?? did coolant flush no help..

Ever consider the fuel pump has failed?

You don't run wires to items to test them

The are many places you can power up a fuel pump,
but you need to check for a good ground connection

You have a 16 year old vehicle,may as well drop the tank &
get involved.

The hose from the valve cover to the air cleaner is just a fresh air source for the crankcase.
What you are describing is a radiator low on coolant or has air in the cooling system.

First check your fluid in your radiator if its low your heater will not work. Check all your heater hoses and make sure they are not kinked.
Your heater core may be plugged That will stop the heat flowing as well. If it's the heater core it will have to come out and replaced most likely. Not sure if there is a heater valve on that car.

Follow the top raditor hose to motor. Sometimes it following bottom. But some of time its following the top.

Misfirng...

1998 Mazda Millenia S 2.3 liter DOHC V-6




1998 Mazda Millenia L 2.5 liter DOHC V-6




Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day and Merry X-mas.

When I turn on the heat in my 2004 mazda mpv the front air vents blow heat but the rear air vents are blowing cold. I have adjusted every setting is there something I am overlooking.

Te fan that is not working is for the a/c. Fan probably needs replacing. You can check fan by running a direct current from battery if it does not run replace, if it does have a/c system checked

Available engines

• 6 Cylinders 2.5L MFI DOHC (found in 67% of 1999 Mazda Millenia)
• 6 Cylinders 2 2.3L MFI DOHC SC (found in 33% of 1999 Mazda Millenia

sounds like too rich of a mixture check for vacuum leaks and check fuel press regulator

check water level in rad if ok check thermostat or couldbe a plugged heater core.also check for vacum to heater door is working