Turn up the Heater
12-30-2004, 12:18 AM
#51
Originally Posted by Omicron
... plus the seat heaters (which don't work fully unless the thermostat is set all the way to hot, BTW) make all the difference.
There is no connection between the seat warmer circuit and the HVAC system.
Originally Posted by Omicron
Yup, they are - AND they also cycle on and off as you mention. But to get them to come on "full power," you need to have your thermostat dialed all the way up.
Originally Posted by Omicron
Empirical evidence.
My seat heaters didn't seem to be functioning - barely tepid - last winter until someone suggested the relationship to the temp control. So I tried it, and poof, my buns are now toasty warm whenever I want them to be.
I think that there IS a relationship between the temp control know and the heaters, published or not. I believe it's like an AND switch, eg IF (temp control set to warm) AND {(temp less than 82 degF) AND NOT (temp GT than 99 degF)} THEN (turn on seat heaters).
My seat heaters didn't seem to be functioning - barely tepid - last winter until someone suggested the relationship to the temp control. So I tried it, and poof, my buns are now toasty warm whenever I want them to be.
I think that there IS a relationship between the temp control know and the heaters, published or not. I believe it's like an AND switch, eg IF (temp control set to warm) AND {(temp less than 82 degF) AND NOT (temp GT than 99 degF)} THEN (turn on seat heaters).
Originally Posted by Omicron
Perhaps in your car. In my RX-8, they definitely do not get as hot as they can unless the thermostat is turned all the way up. Maybe this is something variable in the ECU programming, and varies depending on which flash level one's car is on... hmmm....
There is no connection between the seat warmers and the CAN buss. It is a simple feedback circuit.
12-30-2004, 01:39 AM
#52
Metatron
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Agreement.....
I see you are all in violent agreement - "When it's very cold, I have the heater cranked to 'Max', and my (thermostatically controlled) seats get really warm".
Don't forget that when the seat and cabin are cold, the seat thermo is going to take a LONG time to cycle off, and they are getting cooled from below as well as warmed from above, from your (now warm) ***!
The floor heat not being as warm as the vent air is probably due to the a/c being on - this can be completely defeated by pulling the 10amp fuse marked 'a/c clutch' in the front of the engine fusebox. ECU stays happy, thinks it is still fooling everyone, and running the a/c to dehumidify!
:D S
Don't forget that when the seat and cabin are cold, the seat thermo is going to take a LONG time to cycle off, and they are getting cooled from below as well as warmed from above, from your (now warm) ***!
The floor heat not being as warm as the vent air is probably due to the a/c being on - this can be completely defeated by pulling the 10amp fuse marked 'a/c clutch' in the front of the engine fusebox. ECU stays happy, thinks it is still fooling everyone, and running the a/c to dehumidify!
:D S
12-31-2004, 11:13 AM
#53
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Originally Posted by MazdaManiac
There is no connection between the seat warmers and the CAN buss. It is a simple feedback circuit.
And, anecdotal versus empirical?
I figure I have 2 datapoints here anyway... left and right cheek. :DGenerally speaking folks, I'm trying to get a discussion going here, as the only thing that is clear is that the seat heaters seem to vary from car to car on how well they work. I can read a wiring diagram as well as anyone, and know the seat heater circuit shows as independant. BUT I think there might be something else going on here, and am trying to get data on what it could be.
We can all say "you're wrong!" to each other all day long, but that doesn't help solve the problem. I'd rather hear theories on what could be causing this so we can maybe figure out a solution. I have no vested interest personally, as both my seat heaters and heater work just fine. But there seems to be enough people with the problem that finding a solution would be a good thing for the RX-8 community overall.
The 2 theories I've put forth are the only ones I've heard so far:
Originally Posted by Omicron
First is that my partially blocking off the rear floorwell heater vents has somehow affected the sensitivity of the "between 80 and 99 degF" control to the better, maybe because of the proximity of the seat heater thermostat to the ducting under the seat. If the ducts don't get as warm or blow hot air up into the underside of the seat, then all the thermostat reads is the heat of the seat's heating elements. In other words, maybe the duct is causing the thermostat to think the seats are warmer than they are. At any rate, I blocked off my ducts about the same time I "discovered" the temp control helping make the seat heaters warmer, so it may be connected.
Second possibility is that the seat thermostat tolerance varies from car to car, as we've discovered other components do on this car, like the MAF for instance. So while one car really is letting the seats get up to 99 degF, another car due to the tolerance range of the seat thermostat, may only let the seats get to, say, 90 degrees.
Second possibility is that the seat thermostat tolerance varies from car to car, as we've discovered other components do on this car, like the MAF for instance. So while one car really is letting the seats get up to 99 degF, another car due to the tolerance range of the seat thermostat, may only let the seats get to, say, 90 degrees.
01-03-2005, 12:37 AM
#54
Felix the Wankel!
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Note to Self: RTFP (Read the 'ahem' Post)
Originally Posted by StealthTL
The floor heat not being as warm as the vent air is probably due to the a/c being on - this can be completely defeated by pulling the 10amp fuse marked 'a/c clutch' in the front of the engine fusebox. ECU stays happy, thinks it is still fooling everyone, and running the a/c to dehumidify!:D S
So here's what I learned, when you pull the AC fuse behind the drivers kick panel, none of the HVAC controls work--ac, fan, vent settings, etc. Just thought I would pass that along in case anyone is curious :D If it ever stops raining (I have to park my baby outside
), I'll try pulling the correct fuse.
Last edited by RotaMotion; 01-03-2005 at 12:41 AM.
01-03-2005, 01:44 AM
#55
my gets HOT fast...within a few minutes, faster then any car I have ever been in
this occurs even in -15F degree temps...yes you read that right -15F
it is great! then once it gets burning hot I turn down the temp and even when it is a tiny bit in the 'blue' area it is still cooking the car, amazing
this occurs even in -15F degree temps...yes you read that right -15F
it is great! then once it gets burning hot I turn down the temp and even when it is a tiny bit in the 'blue' area it is still cooking the car, amazing
11-27-2005, 02:23 AM
#57
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Originally Posted by Atacdad
concerning heating up quickly...I've noticed that leaving the controls on VENT results in more, hotter air than the traditional "on the floor" heat. I have one theory with two components. The floor setting seems to be restricted...I don't get as much air flow when directed to floor (as an aside, it gets alot noisier too...like the intake is the defrost area at the base of the windshield). Secondly, the floor setting turns on the air conditioner as well (Dry the air)...which probably results in a colder base air charge that the heater core is trying to warm or vice versa....same result...air is not as hot.
Some days it feels like the seat warmers are hot, some days not. Read your manual and it'll say controlled by thermostat in seat.
Why no block heater? Every other car in Canada offers it!
11-28-2005, 10:04 AM
#58
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...
Originally Posted by truemagellen
my gets HOT fast...within a few minutes, faster then any car I have ever been in
this occurs even in -15F degree temps...yes you read that right -15F
it is great! then once it gets burning hot I turn down the temp and even when it is a tiny bit in the 'blue' area it is still cooking the car, amazing
this occurs even in -15F degree temps...yes you read that right -15F
it is great! then once it gets burning hot I turn down the temp and even when it is a tiny bit in the 'blue' area it is still cooking the car, amazing
11-28-2005, 10:25 AM
#59
Oil Injection
Once my car is warmed up (about 10-15 mins of driving) my heater can get up to 170*F-190*F (measured at the top dash vent outlets) id say thats pretty warm. That was on a day last week when the cars amb temp gauge was reading 42*F
05-20-2008, 12:45 PM
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heater prob
what you should try is remove 1 gal off coolant replace with iso alcohol it will not freeze but will increase your heatup time to less than five mins, and this is not a thermo prob if it were you wouldnot get any real heat for about 20 to 30 mins under the temp conditions becuase it would have to be stuck open and the fluid cap and water pump cycle rate along with the ambeint air temp which would be amp when driving the same as we do wind chill in short any heat put into the coolant would be sucked by passing into the cold rad core and thats why people use the cardboard to block the air flow thru the core not a good idea by the way.the propeties of alchohol allow it to heat up very fast and added with the coolant gives a great mix that wont freeze wont over heat but gets hot fast and as an added bonus it is an incredible way to flush out the corrosive byproducts that antifreeze creates thus giving you a longer lasting cooling system and no alcohol will not harm anything internal
05-20-2008, 01:05 PM
#61
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seat heaters
i put the heated seats of an 8 in my son nissan pickup and the heaters work fine and they are not conected to any climate cotrol but if any one can help with wiring diagrahm for the climate controls on the bottom of the head unit i would be most greatful
06-05-2008, 04:02 PM
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While i agree that the heater feels weak. Most other cars i've had I turn the heat full blast for 5 minutes and then i'd have to turn it down because its too hot.... the rx8 i keep full blast and it never seems hot enough (Although not cold), just doesn't seem "hot".
I had it tested at the dealer and they said its pumping out the correct temp (i forget what he said it was).
i would suspect that considering the engine temps the rx8 gets, they have a system that would tone down the heat delivery a bit.
Personally I find although it feels weak, i like the temp it gives out. It's perfect. Only downside is the noise of the fan at full blast.
I had it tested at the dealer and they said its pumping out the correct temp (i forget what he said it was).
i would suspect that considering the engine temps the rx8 gets, they have a system that would tone down the heat delivery a bit.
Personally I find although it feels weak, i like the temp it gives out. It's perfect. Only downside is the noise of the fan at full blast.
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