My car has no heat, no warm/hot air into the car, it constantly blows cool air....and my need on the temp gauge doesn't rise...it stays At 1/4 of the way up in the C part....

what is causiing this?

 

I live in canada and it's a bit chilly outside...but the gauge should go higher, no? it pretty much stays at idle temp...and doesn't seem to move even if i drive for 30+mins

 

The temp gauge on the 2nd gens are less gauges and more idiot lights. They never seem to work quite right, but it tell you 100% when you’re cold and when you’re overheating (Thanks Mazda )

So you are turning on your heater inside the car I assume? And when you turn that on you do not get warm air? You might be looking at a clogged heater core.

- Dana "Got to love Mazda electronics"

 

Clogged heater core is unlikely, Dana. You should know RX-7 common failure modes better than that

Your heater controls are called the logicon. The logicon was manufactured rather poorly, and tend to develop some gremlins over the years.
The logicon controls a stepper motor called the air/mix motor. This little guy simply controls a valve that opens and closes the flow of coolant through the heater core.

To check the operation of the logicon/air/mix motor, put the keys in the ignition with the door closed, and turn the car to run (but don't start the engine.)
Poke your head beneath the dash on the drivers side, and move the heater control on the logicon from hot to cold. You should here a little electronic solenoid moving back and forth. If you don't here is your problem.

To fix this, you will need to replace both the logicon and air/mix motor with a used working one. When the air/mix motor goes, it normally takes out the logicon with it. If you want, I have several logicons and air/mix motors which I know work.

IF you hear the little air/mix motor motor moving back and forth with conjunction to the logicon heater control movement, then you might have a clogged heater core. It is unlikely, though, as when they clog they typically allow the air to be heated a little, as they never clog completely.

The temp gauge is normal.

Summary: Most likely, something electronic went wrong. It is common on these cars. Your temp gauge should not move from 1/4. If it did, there would be a problem.

 

Damn I am getting 0wn3d all over the place today.

What he says is true I just plain didnt think about it

- Dana "can't be right all of the time"

 

yes, good call scathcart....

-Markus

"This is true" CHEERS!

 

I don't hear the air mix motor but I hear the logicon switch..but i think that works no matter what...damn so i'll probalby have to replace both...which is easier?