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R32 Skyline, Air Con / Heater Problem? Amb Button?

skylinetas

By skylinetas,
in General Maintenance

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skylinetas Enthusiast

skylinetas

Posted
Posted

I have a 1990 Model R32.

The Air Con does NOT get very cold at all. I assumed it will just need regassing.

However I then thought it may not be the problem because strangely the HEAT does NOT get hot at all, just slightly warm.

What i'm trying to find out is, if the air con needs regassing does it usualy affect the Heat at all??

OR am I experiencing a different Problem????

I also noticed when I click on that AMB button it reads a VERY high temp, Usualy between 34 and 45 Degrees.

What is this AMB reading telling me? Outside temp or Inside temp?? Either way it must be way off and that could be causing the problem??

Any help welcome!!

adam-__- Grand Master

adam-__-

Posted
Posted

Hey mate, try holding down the 'Cold' button for about 10sec until a 'FC' comes up on screen. In this setting, it should ignore all the sensor readings and just go to the coldest it can get. If this is colder than it normally is on the coldest setting (ie. 18 degrees), it's your sensors playing up. Even try holding the 'Hot' button for about 10secs for the 'FH' to come up on screen. It should go to the warmest the system can go.

If all the temperatures are the same as they were before, it could be your blend door servo motor (it controls your hot/cold).

Hope that helps.

Cheers,

Adam

blind_elk Grand Master

blind_elk

Posted
Posted

AMBient ie outside temp. The sensor is on the driver's side, just in front of the radiator, below the headlamp. Unless you are in FNQ or Darwin or Alice Springs, then the temp being shown is quite possibly in error. Run a diagnostic on the A/C (there's a thread somewhere about it).

If it needs regassing, then it probably wouldn't work at all, as it has a pressure switch to prevent operation when gas pressure is low.

skylinetas Enthusiast

skylinetas

Posted
  • Author
Posted

My air con doesnt blow COLD and the heater only blows slightly WARM.

I enter the test mode and get 25 (In my shed at night)

Flashes 3 for a few seconds then 30. (Is 30 Right?)

Outside 35.5 , This is too high??

Inside 18,

air intake 17

refrigant temp 15.5

Any ideas? The only problem I can see is that 35 degrees outside is totaly wrong?

I would have thought that the Aircon Would probably more seeing as though it thinks its so hot outside?

djr81 Grand Master

djr81

Posted
Posted
My air con doesnt blow COLD and the heater only blows slightly WARM.

I enter the test mode and get 25 (In my shed at night)

Flashes 3 for a few seconds then 30. (Is 30 Right?)

Outside 35.5 , This is too high??

Inside 18,

air intake 17

refrigant temp 15.5

Any ideas? The only problem I can see is that 35 degrees outside is totaly wrong?

I would have thought that the Aircon Would probably more seeing as though it thinks its so hot outside?

Check that the outside air temperature sensor is working. It is in front of the radiator. Put a hairdrier or something on it to warm it up and/or use a thermocouple to check it is getting atleast a half decent air temp measurement.

skylinetas Enthusiast

skylinetas

Posted
  • Author
Posted
Check that the outside air temperature sensor is working. It is in front of the radiator. Put a hairdrier or something on it to warm it up and/or use a thermocouple to check it is getting atleast a half decent air temp measurement.

The outside temp sensor must be faulty, as it says 35 degrees when its about 12 degrees at night.

I cannot locate the sensor? Is it the plug that links with a cable to the top of the A/C bottle?

skylinetas Enthusiast

skylinetas

Posted
  • Author
Posted
Have you tried holding down either the hot or cold button for about 10secs? It should ignore the sensors and go full hot or full cold. Give that a try and let me know what happens.

I did try that, It didnt get any Hotter or Colder, than what is does on max or min temps.

The only thing that looks odd to me is the outside temp reading, but apparently thats not ment to affect the climate control at all? Appreciate your help

adam-__- Grand Master

adam-__-

Posted
Posted

Hrmm. From the diagnostic you did you only got an error of no. 25 which is the sunload sensor. That shouldn't affect your temperature as far as I know. If it was your blend door servo motor, it should come up with the error no. 26, but it doesn't.

Did you hold down the hot or cold button until the letters 'FH' or 'FC' came up? As far as I'm aware, that should just ignore the sensor readings and blow as hot or cold depending on what you pressed. Also a stupid question but, did you let the engine warm up before you pressed the hot button? :O

If what I've suggested doesn't work, I'm not too sure what the problem could be because no error codes come up when you're doing the diagnosis.

Cheers,

Adam

Rekin Grand Master

Rekin

Posted
Posted
Hrmm. From the diagnostic you did you only got an error of no. 25 which is the sunload sensor. That shouldn't affect your temperature as far as I know. If it was your blend door servo motor, it should come up with the error no. 26, but it doesn't.

Funny thing that diag, mine doesnt come up with no.26 although when i took it to an aircon mechanic they told me the blend door servo motor isnt working. The flap isnt moving and has been manually set to cold for me.

Just take your car to an aircon workshop and get a free inspection. They will tell you whats wrong in 5 minutes :P

adam-__- Grand Master

adam-__-

Posted
Posted

Yeah, taking your car to a workshop would probably be the best thing.

Hey Pat, did you ever get that blend door servo motor of your's working? Thanks for your help again, winter's coming up and I'm glad the heater is working.

Cheers,

Adam

Rekin Grand Master

Rekin

Posted
Posted
Yeah, taking your car to a workshop would probably be the best thing.

Hey Pat, did you ever get that blend door servo motor of your's working? Thanks for your help again, winter's coming up and I'm glad the heater is working.

Cheers,

Adam

Got a quote of $70 for a 2nd hand blend door servo motor from wrecker.

I got others things to spend money on :P

Hot air isnt worth $70 for me haha

Maybe i might have the same problem as you.

Ill need you to have a look at it, cause im too lazy :D

Cheers

adam-__- Grand Master

adam-__-

Posted
Posted
Got a quote of $70 for a 2nd hand blend door servo motor from wrecker.

I got others things to spend money on :P

Hot air isnt worth $70 for me haha

Maybe i might have the same problem as you.

Ill need you to have a look at it, cause im too lazy :D

Cheers

If your problem is the same as mine, I wouldn't mind having a look. All that was wrong with my system was that the plug to the motor needed a shake. All was fixed after that. Biggest problem was finding out what was wrong in the first place.

From the sounds of things, your motor is busted. I don't know how to change that ;)

Cheers

HTMR32 Collaborator

HTMR32

Posted
Posted

hi,

my air con doesnt get cold,

but my heater gets fairly hot,

with the amb try slapping it when i did that the temp comes out working properly, i slaped it and punch it a few times lol,

but now it reads any temp,

let me know how you go.

  • 6 months later...
DjeMz Mentor

DjeMz

Posted
Posted
If your problem is the same as mine, I wouldn't mind having a look. All that was wrong with my system was that the plug to the motor needed a shake. All was fixed after that. Biggest problem was finding out what was wrong in the first place.

From the sounds of things, your motor is busted. I don't know how to change that ;)

Cheers

wanna meet up n can u fix mine :wave:

ill be ur fwenddddddddd

  • 2 weeks later...

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