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What would cause the heater on a Mazda B2300 to work on and off and blow only cold air?
Wiki User
∙ 17y ago
heater core is probably faulty if fan only blows cold, also check air temperature controls, vent may be stuck The heater core is basically another radiator in your vehicle that tranfers warm fluid from your engine/radiator to the inside of your vehicle. This usually means that it depends on continuous flow to work. The fluid supply line to the core could be blocked or routed incorrectly, or the core could be bad. Its possible that a previous owner had a leaking heater core and bypassed the heater core entirely (happened to me) and never told the purchaser.
Wiki User
∙ 17y ago
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No...
What would cause your manual 1998 Mazda truck to rev everytime you shift or take out of gear?
I have a 1997 Mazda B2300 that was having the same problem. When I went to have the emission done it failed. One of the codes on the print out was a possible issue with the Idle Control Valve. I replaced it and that has solved the issue of the high rev when I shift. Still not passing emission though. Hope this helps.
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it has a bad rear heater core
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