1992 Mazda MPV heating problem

1992 MAZDA MPV
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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SINGIDUNUM
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  • 4 POSTS
92 MPV, 6 cyl, front wheel drive, around 153,000 miles.
Heater is blowing cold (kind of worm) air when selector **** is on HOT position.
If selector is on COLD I have realy cold air coming out.
Both water lines to/from heater in engine compartment are hot when engine runs on normal opereting temperature.
This started few weeks ago; I had heat in the car and than sudenly no more.
If actuator (electric motor ) is suspected, is there any fuse for it?
Or, if blend door is jammed, does whole heating core has to be pooled out of dash?
Dec 5, 2010 at 10:25 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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RASMATAZ
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 75,992 POSTS
Check and test the thermostat and also the air blend door/actuator
Dec 5, 2010 at 10:36 PM
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SINGIDUNUM
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Thanks a lot for your response.
To check blend door does whole heat unit has to be removed from dush?
Dec 5, 2010 at 10:48 PM