R32 Gtst Climate Control Question

[Shaun]

Hi,

Just wondering if anyone can help me out.

I have a late 93 r32 gtst, and my heater seems to be on all the time. Its not blasting hot air at me or anything, but it just seems to be slowly coming out near my legs; even when the climate control is off.

Also, the ambient temperature display is showing minus 30 degrees when the AMB button is pushed. Not sure if the problems are related.

Anyone know how to fix these problems??

Thanks,

Shaun.

[dmr]

the climate control will let air through the vents naturally, unless you press the button which cycles the air in the car (next to the AMB button) which will close the vents.

your temp display shows -30deg because the sensor must have been disconnected. it's a small black plastic object located infront of the radiator and near the horns. plug it back up and it will show the correct temperature.

[Shaun]

Thanks for the reply.

Ill see what happens when i recirculate the air in the cabin. Its just that the air feels really warm.

Ive done a fair bit of modification at the front, so i must have unplugged it at some point. So is the small black plastic object attached to a structure at the front or something?? Any ideas what it looks like? Ive removed all the a/c stuff incl. the condensor.

Shaun.

[dmr]

Thanks for the reply.

Ill see what happens when i recirculate the air in the cabin. Its just that the air feels really warm.

Ive done a fair bit of modification at the front, so i must have unplugged it at some point. So is the small black plastic object attached to a structure at the front or something?? Any ideas what it looks like? Ive removed all the a/c stuff incl. the condensor.

Shaun.

the temp probe should be connected to the vertical radiator support bar. if someone hasn't already by the time i finish work, i'll take a pic of it for you.

[Shaun]

Cool, thanks. Ill have a look.

[adam-__-]

The sensor itself is probably stuffed to be reading -30 degrees. I think you'll need to play with some resistors. There's a tutorial on how to do it somewhere.

If you want cool air to blow out, just hold down your 'cool' button for 10sec+ and the sign "FC" will appear. It should just ignore what the sensors are saying and blow the coolest air your car can produce.

If you're just wanting to stop the hot air from coming out. First switch off the unit, turn it back on, but without turning a fan on then pushing the recirculate button.

[Shaun]

Awesome. Thanks mate; will give it a go.

Is my heating problem related to the missing/broken sensor at the front?

How did you know how to do this? Have you got a manual or something?

Shaun.

Edited April 25, 2008 by Shaun

[adam-__-]

Because the sensor's reading -30 degrees, your system will try to make it warm again by blowing hot air out.

There's a thread in the tutorial/DIY section. Search by typing in "+cold +air" the thread should come up.

Edit: Here's the link, http://www.skylinesaustralia.com/forums/R3...mp;hl=cold++air. Pretty sure there was some guide as to how and what to do about the sensor's readings.

Edited April 25, 2008 by adam-__-

[Shaun]

Thanks for the link.

I had a read, and also searched other threads, but my car is a bit different because i dont have any air conditioning.

I removed everything to do with air conditioning (in the engine bay) when i converted to a single turbo rb26. So i removed the compressor, condenser, all the lines and the bottle thing in front of the condenser. Nothing was removed from inside the car though.

So im assuming that if i run the diagnostic test, it'll come up with errors everywhere. Also ive got an aftermarket computer (not sure if this matters).

Obviously i dont care if i dont get cold air, i just want to stop the warm air all the time.

Do you think i can still have a normally functioning heater/ ambient air system even though ive removed all the A/C stuff in the engine bay??

Thanks again,

Shaun.

[adam-__-]

Hrmm, that's a good question. I'm not too sure about that one.

My guess would be that the system will continue to try and get the temperature the unit's set at. So if the unit is set to 18 degrees, it'll keep blowing the coolest air it can get (ambient) till the sensors get that reading. But seeing that one of your sensors are reading -30 degrees (but it's really 25 for example) and you set the unit to 18 degrees, it's trying to get the 18 degrees so it's blowing hot air. Fixing the sensor up will make it read 25 degrees and to get to 18, it'll use the air con, but you don't have one so it'll just blow ambient till it does (probably never).

Does that make any sense?

Edit: I don't think what I wrote answered your question. With the diagnostic test, it should just test as if it had air con. The test just checks the motors which control the hot/cool air, the air directions, ect. It shouldn't give any errors if you've just removed the air con (from what I know). The after market computer shouldn't effect the climate control unit.

You should be able to run a normal air system in your car. I think you just need to get that sensor fixed up first. Because that's reading -30 degrees, the climate control thinks you're freezing so it'll keep blowing hot air till you're warm.

Edited April 25, 2008 by adam-__-

[Shaun]

Yep, i understand what your saying in regard to the faulty sensor and the unit trying to rectify the minus 30, and i agree with you.

Ill run the diagnostic tomorrow (first chance ive had), and let you know what came up. Probably in the afternoon. It'll be interesting anyway.

Thanks for your help Adam.

Shaun.