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Need to replace 1997 Mazda MPV 3.0 4wd heater core hose from under the exhaust manifold on the passenger side of engine

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Posted on Jan 02, 2017

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SOURCE: Heater core and heater hoses

beig there, done that.
most likely is not the heater itself. most of the leak is from the water **** (heater control valve) located at the passager side of the heater. if you need instruction e-mail me at, I have all the instruction and diagrams for the thing.

Posted on Sep 30, 2008

  • 78919 Answers

SOURCE: problems with locating heater core in 1997 oldsmobile achievea

U must remove the entire dash to service the heater core, once the dash is out then the heater core case must be split to get core out.

Posted on May 19, 2009

  • 1 Answer

SOURCE: 1997 Mazda MPV, 3-Ltr. V6, destroys Timing Belt

i need help install a timebelt in a mazda mpv? please help me out

Posted on Aug 05, 2009

  • 3433 Answers

SOURCE: 2003 Montero: Water leaking under dash passenger side

Is the leaking liquid antifreeze or clear water? Anti freeze is slimy. Ck your AC drain . its under the blower housinfg under the hood on the fire wall. The drain is easier to seeb from below looking yp. Squeeze it open and make sure it's clear. Good luck -Ned_

Posted on Sep 22, 2009

  • 22 Answers

SOURCE: i need a diagram of a 2001 mazda tribute engine ,

Get a haynes manual they are priceless. Check out Ebay

Posted on Oct 20, 2009

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Just bought a 2001 mazda mpv coolant fluid was low refilled it & disappeared (no leak under car, etc) car temp went up to H and the cel came on. turned car off found cracked hose by battery need diag

need diag Dani, Check the attached links,instruction and guides shows all cooling components in diagram and part #'s, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

2001 Mazda MPV Parts MileOneParts com

2001 mazda mpv cooling system diagram Google Search

Heater core coolant hose lines inlet and outlet location mazda mpv viewer...

Apr 04, 2016 | Mazda Cars & Trucks

1 Answer

Rear heater working ok , but front heater blows cold ?

Best case is you accidentally left the AC switch on... Check for pinched/bent hoses near firewall of passenger side. Worst case is the heater core is clogged. In this case someone can backflush the heater core to clear it. Good luck!

Apr 30, 2015 | 2001 Mazda MPV

1 Answer

I posted a question about my 2000 mazda mpv when I turn on the heat in the front it blows hot on passenger side but not on driver side in fron by steering wheel

i cant give a direct answer i can only ask questions has anyone been under the dash put radio in heater core anything and knocked the vents loose do you hear air hissing or vacumm leak check fuse box for heater vents a/c vents blown fuse look under hood if you hear air look for loose hose going to firewall

Oct 13, 2014 | Cars & Trucks

2 Answers

Is there a freeze plug in the back of the block on a mazda mpv 3.0 liter engine?

do mean a frost plug not to sure bout that whats the year of your car it will most probs be a alloy pipe or metal pipe that runs under your manifold they tend to corrode a bit sometimes stopleak works but if hole is to big you will have to replace it hope this helps ya

Jun 23, 2014 | 1993 Mazda MPV

1 Answer

How to fix busted heater core hose to lower engine on MAZDA1997 MPV

Remove the dash and replace the heater core would be my suggestion. Have a radiator repair shop look at this first before you tear it apart.

Jun 06, 2012 | 1997 Mazda MPV

1 Answer


Tcs is not related to the engine. Please get a scan and post the trouble codes here.

Jul 19, 2017 | 2003 Mazda MPV

3 Answers

My 89 chevy caprice with a 305 is leaking antifreeze from the back of my firewall (passenger side) onto the exhaust pipe. It is dripping onto the exhaust just past where the two exhaust pipes come together...

Check the heater control valve and the hoses where they go into the firewall. If the leak is not there, then the most likely problem is a leaking heater core. You need to look carefully to find the source of the leak before you can repair it. Use a flashlight, mirror or whatever is necessary to do that. If it is a hose, use extreme care removing it from the heater core connection. best to cut it off with a razor blade. If it is the heater core,most times it will make the passenger side rug wet. If it is the core, it isn't an easy job and I'd consider either getting a haynes or chilton manual to guide you, or, have a good shop do the work.
good luck

Feb 10, 2010 | 1989 Chevrolet Caprice

1 Answer

Heater not blowing hot but its blowing

Check the heater hoses for being hot when the engine is at normal operating temperature. If both are hot, then the core is good. If the blower motor runs, then look for a diverter valve in the air duct system that is not in the right position--possible problems are kinked or split vacuum hose to the valve. Check the engine area for a bad hose from the intake manifold going to the temperature control panel. Check the passenger side under the dash for the heater components.

Dec 23, 2009 | 1997 Ford Expedition

2 Answers

When driving, heater blows warm air. When idling, cold air.

check your anti-freeze level, I'd bet that you're a little bit low!

Dec 15, 2009 | 2001 Mazda MPV

1 Answer

How i replace the heater element in my 1997 Pontiac SSEI

I assume you're referring to the heater core.Its located under the passenger side of the dash.I removed the passenger side seat and did it on my back.It took me about 4-5 hours as I had never done one before.The hose clamps(in the engine compartment side) are very difficult to get to without a special hose clamp tool.If you've never done it I say take it a good mechanic!

Nov 01, 2009 | 1997 Pontiac Bonneville

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