car13

i have had problems with the thermostat in my car. i have put in 3 different ones, 2 from autozone and 1 from napa and my car kept getting way to hot. so i tookit out and ran it with out a thermostat and it ran fine. i looked in a hanes manual and it shows a jigglepin? none of the 3 i bought had one. does it need to have one ? and were could i buy one from that would or atleast has a good thermostat?

Black13B

iTrader: (1)

always ALWAYS use a mazda OEM thermostat.

Icemark

Never use an aftermarket thermostat in Rotary. Only use the Mazda OEM

Icemark

And don't drive without a thermostat, again on a rotary engine the coolant will flow too fast to pick up the heat and you will end up with hot spots and eventually coolant seals that fail.

Black13B

iTrader: (1)

So this means running the engine too cold all the time could be attributed to failed seals?

I've seen a few guys who (possibly out of laziness) run their e-fan during an entire drive, resulting in overcooling.

Related, no?

RoninAutoBoX

Different situations. In one situation, you have the water going by so fast, that the engine isactually not rejecting enough of its heat into the water, in the second situation, the e-fan is taking too much of the engine's heat away.

Overcooling an engine will make it run improperly in some cases, but the thermostat still regulates the coolant temps far more than the fan does.

If the engine does not reject enough heat, on the other hand, it can cause serious damage, as mentioned just before.

Black13B

iTrader: (1)

Ahh ok I see.

Aaron Cake

iTrader: (1)

And yes, e-fans should always be thermostatically controlled (thermostats are cheap, and all aftermarket EMS systems...Haltec, Microtec, etc. have fan controls). No excuse for an improperly connected e-fan (except laziness).

Black13B

iTrader: (1)

Hmm.. anyway I can hook up the e-fan to a stock thermostat (I'm guessing.. hmmm NOO!!)? or an aftermarket temp gauge out there that has a control for fan? is that kind of thing available?

I'd rather do this than use an entirely different unit.. If you catch my drift..

Aaron Cake

iTrader: (1)

The stock thermostat just controls water flow, so it can't control the fan. You could build a simple circuit (based around an op-amp/comparator) and use the stock temp sensor, but by the time you do that and test reliability, you might as well just use an aftermarket thermostat.