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Most likely a plugged core. You can try flushing it, but you may end up replacing it.

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โˆ™ 2011-10-18 21:11:23
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Q: Why would the heater core be hot going in but cold coming out on a 1993 Mazda Protege?
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Related questions

How do you change heater core on 93 Mazda protoge?

Replacement of the heater core on a 1993 Mazda Protege is going to first require the removal of the entire dashboard. Once that is removed then the heater control box will need to be removed and disassembled in order to get access to the heater core inside.

How do you change a heater core on a 2003 Mazda tribute?

The heater on the 03 Mazda Tribute is going in and out. What is the problem and how can it be fix?

Where can you find the fuel filter on a 1994 Mazda protege?

try going on ebay!

Your 1992 Mazda Protege will turn over but wont start what could be wrong?

battery may be dying and altenater may be going out

Where is the data link connector on a Mazda Protege?

It Is underneath the dash on the drivers side, You are going to have to stick your head up underneath sometimes to find it.

Can 1997 Mazda protege auto transmission swap to 1999 Mazda protege?

not likely. the 1997 Mazda protege is a different chassis than the 1999 protege (BHA to BJ, respectively). the two transmissions between the two generations are also different, the BHA utilizing the FB4A-EL automatic transmission and the BJ utilizing the FN4A-EL automatic transmission. they also have different engines. you're better off going to a junkyard and pulling a auto trans from a third generation protege (1999-2003)...that would work. if you have any further questions, you can follow this link: hope this helps!

How do you fix a horn that won't stop going off in a 1997 Mazda Protege?

if your horn wont go off its a short to power or faulty conector

Seatbelt wont work on a 92 Mazda protege alarm keep going off?

Check out this site:

What Bad smell is coming from my defrost in my 98 f-150?

the heater core is going out

What could be wrong if a Mazda Protege 2001 the heat only works on high setting?

Probably have a burned out resistor. These are not expensive and usually easy to change. They are locaded near the heater fan motor and have a plug going to them of 3 to 4 wires... Unplug it then remove the screw(s) & pull it out. Replace in reverse order.

Why would a 1997 Honda Protege almost die when coming to a stop and the idle is very low?

I had this issue just a few months ago. Your clutch is going out. I had the flywheel and slave cylinder replaced on my '96 Protege (stick-shift) to fix it.

Why would the transmission on a 1993 Mazda Protege slip especially when going up hills and when it's cooler?

Possibly low of fluid. If it is not low, then have the transmission and filter changed and see if this helps.

Steam coming through vent when you turned on smells bad what's going on?

Heater core is leaking

Why does Mazda protege jerk after shifting in almost every gear?

your clutch is going out. i had the same problem. look into getting a new pressure plate and while your at it, get a new flywheel. if you done look at it soon, you will be walking

Is the antifreeze going into the heater core coming from the lower radiator hose?

No. The top hose goes to the engine. The bottom hose feeds from the engine to the heater core back to the radiator.

Where is the egr valve position sensor on 98 mazda protege?

It's bolted right on top of the egr valve which is on the back of the engine under the throttle body there will be a small vacuum line going into where the egr valve bolts into the intake

How do you unblock a heater core?

To unblock the heater core, remove two heater hoses coming off of the engine going to the heater core. They are usually located on the passenger side of the vehicle near the firewall. Then use a high power water or air source to blow through the lines both ways.

Why does my 1995 Mazda MPV heater cuts on and off?

Check your coolent level! Yours is low and the on/off heat gives you a warning that your going to run out of coolent and trash your engine.

If a clay or rust substance is coming from only the hot side in faucets is this caused by the water heater rusting or going bad?

You are more than likely correct. Try draining the water heater to remove any sediment.

Where is heater hose on 1992 olds?

There should be two hose's coming off the engine going to the firewall. Black in color and about 1 inch across.

Where is the fuel pump in a 1992 Mazda Protege and how do you change it?

It's in the fuel tank. You access it by going under the rear seat. Sounds easy enough, but there are dangers here where you really need a repair manual to do the job right, and most important, safely.

What are the signs of a alternator going bad in a 1997 Mazda Protege 1.8?

alternators go 'bad' in various ways; bearings = noise diodes = no charge, insufficient charge or discharge. brushes = no charge

Where is the location of the horn on a 1992 Mazda Protege?

It is buried up under the right front fender. I am going to replace mine as it is not sounding very loud. You can get at the feed wire easy enough. So I will mount the new horn in a more accessable location

Is the heater coil going bad on my 2001 ford f 150 if I smell antifreeze coming through the air vents if I turn the air controller to off I do not get the smell anymore?

More than likely the heater core is leaking.

What do you do when the heater fan does not work?

1st check fuse , then or resistor and then blower motor itself resistor is usually under hood right by blower motor or on the ducking it self google images resistor for your kind of car so you know what your looking for power should be going into it when your heater is on and coming out the other side the higher the setting the more power coming out the other side going to blower motor

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