Jump to content
SAU Community

Recommended Posts

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!!

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

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.

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?

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.

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?

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

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

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

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

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

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

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...
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...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I'm looking for some real world experiences/feed back from anyone who has personally ran a EFR7670 with a 1.05 exhaust housing or a .83 I'm leaning towards the .83 because its a street car used mostly for spirited driving in the canyons roads. I"m not looking for big numbers on paper. I want a responsive powerband that will be very linear to 8000 rpm. I dont mind if power remains somewhat flat but dont want power to drop off on top. The turbo I've purchased is a 1.05, although the mounting flange T3 vs T4 and internal vs external waste gates are different on both housings, I not concern about swapping parts or making fabrication mods to get what I want. Based on some of the research I've done with chat gpt, the 1.05 housing seems to be the way to go with slightly more lag and future proofing for more mods but recommends .83 for best response/street car setup. AI doesn't have the same emotions as real people driving a GTR so I think you guys will be able to give me better feed back 😀   
    • Surely somebody has one in VIC. Have you asked at any shops?  Is this the yearly inspection or did you get a canary?
    • This is where I share pain with you, @Duncan. The move to change so many cooling system pieces to plastic is a killer! Plastic end tanks and a few plastic hose flanges on my car's fail after so little time.  Curious about the need for a bigger rad, is that just for long sessions in the summer or because the car generally needs more cooling?
    • So, that is it! It is a pretty expensive process with the ATF costing 50-100 per 5 litres, and a mechanic will probably charge plenty because they don't want to do it. Still, considering how dirty my fluid was at 120,000klm I think it would be worth doing more like every 80,000 to keep the trans happy, they are very expensive to replace. The job is not that hard if you have the specialist tools so you can save a bit of money and do it yourself!
    • OK, onto filling. So I don't really have any pics, but will describe the process as best I can. The USDM workshop manual also covers it from TM-285 onwards. First, make sure the drain plug (17mm) is snug. Not too tight yet because it is coming off again. Note it does have a copper washer that you could replace or anneal (heat up with a blow torch) to seal nicely. Remove the fill plug, which has an inhex (I think it was 6mm but didn't check). Then, screw in the fill fitting, making sure it has a suitable o-ring (mine came without but I think it is meant to be supplied). It is important that you only screw it in hand tight. I didn't get a good pic of it, but the fill plug leads to a tube about 70mm long inside the transmission. This sets the factory level for fluid in the trans (above the join line for the pan!) and will take about 3l to fill. You then need to connect your fluid pump to the fitting via a hose, and pump in whatever amount of fluid you removed (maybe 3 litres, in my case 7 litres). If you put in more than 3l, it will spill out when you remove the fitting, so do quickly and with a drain pan underneath. Once you have pumped in the required amount of clean ATF, you start the engine and run it for 3 minutes to let the fluid circulate. Don't run it longer and if possible check the fluid temp is under 40oC (Ecutek shows Auto Trans Fluid temp now, or you could use an infrared temp gun on the bottom of the pan). The manual stresses the bit about fluid temperature because it expands when hot an might result in an underfil. So from here, the factory manual says to do the "spill and fill" again, and I did. That is, put an oil pan under the drain plug and undo it with a 17mm spanner, then watch your expensive fluid fall back out again, you should get about 3 litres.  Then, put the drain plug back in, pump 3 litres back in through the fill plug with the fitting and pump, disconnect the fill fitting and replace the fill plug, start the car and run for another 3 minutes (making sure the temp is still under 40oC). The manual then asks for a 3rd "spill and fill" just like above. I also did that and so had put 13l in by now.  This time they want you to keep the engine running and run the transmission through R and D (I hope the wheels are still off the ground!) for a while, and allow the trans temp to get to 40oC, then engine off. Finally, back under the car and undo the fill plug to let the overfill drain out; it will stop running when fluid is at the top of the levelling tube. According to the factory, that is job done! Post that, I reconnected the fill fitting and pumped in an extra 0.5l. AMS says 1.5l overfill is safe, but I started with less to see how it goes, I will add another 1.0 litres later if I'm still not happy with the hot shifts.
×
×
  • Create New...