1996 MAZDA MPV HEAT WONT GET HOT ENOUGH

Mazda MPV Dash Trim Removal, Stereo Removal - Auto ...

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Jul 1, 2013 - Uploaded by Robert DIY
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164. 1996-UP MAZDA MPV. MINIVAN. RADIO REMOVAL USING SCOSCHE DT-1 TOOLS . FRONT DOOR PANEL. FRONT AND REAR DOOR 61/2" 3-HOLE.

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www.carstereoremoval.com/htm/stereoremovalMazda.htm

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You might have a bad thermostat, you might just be low on coolant, and check the actual radiator, not the plastic overflow tank. If both of those are fine, you could have a restricted heater core, you can check that by touching both heater core hoses, if one hose is hot and the other isn't, then it's clogged.

I think you may need to replace the thermostat.

The firing order 123456 is correct. See notes at the link below for more help with starting issues

Do It Yourself Diagnosis and Repair

Should be 2 radiator fans that come on when AC is turned on,check coolant fan switch or relay, check fans themselves to see if come on and turning fast enough to cool radiator fins. Is it sitting still or when driving running hot? get back with me.

I was browsing unsolved problems. If you still have the problem, I'll try to help you. But it's going to be awhile trying to communicate back and forth. First...Check the engine for spark. Take off a plug wire and stick a screw driver in the wire end and place the metal part of the screw driver next to something on the van that's metal. Have someone crank it over for just a second or two and see if a small spark jumps from the screw driver to the metal part. I'll check back for your answer.

THERE IS A DOOR UNDER THE DASH THAT MOVES FROM COOL OR AC AIR TO HEAT CHECK AND MAKE SURE ITS MOVING WHEN CHANGING SETTINGS

Are you sure you where using electric solder and not radiator solder ?
there is a tiny tourch they make that is premixed with oxygen and propane that should be hot enough

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If changing the thermostat didn't work, have the heater control valve checked, it may not be opening all the way to let the coolant circulate thru the heater core fully.