A/c Problems

[tek_01]

hey fellas i dont the diagnostics on my r33 a/c system

the symptoms are, i get hot air on and off when i turn on the A/C (can hear compressor turning off and on randomly so i rekon it thinks that car has reached desired temp)

hold the off button for 5 sec, all lights up

press UP and 2 flashes.... gives error 25 (sun sensor)

press UP and 3 flashes.... gives code 30 (all good i assume)

press UP and 41 comes up and sounds like the air con starts going..nothing else happens

press UP and 5 comes on but nothing happens

can someone explain each step for me

i thought it done some temperature test aswell but maybe coz it wont pass code 25??

yes i tried the car in bright sunlight and in the night and still get the error 25

almost 100% sure its a sensor just not sure which one... had the drier/filter replaced and regassed at the end of 06

[adam-__-]

You're getting hot air on and off so I assume it's something wrong with your sensors. First off try holding down the cold button for about 8sec/until a sign 'FC' comes up. It should ignore all sensors and push out the coldest air possible. See what happens then.

[Godzilla32]

First off try holding down the cold button for about 8sec/until a sign 'FC' comes up. It should ignore all sensors and push out the coldest air possible. See what happens then.

Thats handy to know

[Keeper]

You're getting hot air on and off so I assume it's something wrong with your sensors. First off try holding down the cold button for about 8sec/until a sign 'FC' comes up. It should ignore all sensors and push out the coldest air possible. See what happens then.

hehe its FEEKEN COLD or FEEKIN HOT

can someone guide me to the aircon diagnostics link? i searched, but feel retarded today

[adam-__-]

hehe its FEEKEN COLD or FEEKIN HOT

can someone guide me to the aircon diagnostics link? i searched, but feel retarded today

http://www.skylinesaustralia.com/forums/in...showtopic=93814

There you go mate.

[Keeper]

http://www.skylinesaustralia.com/forums/in...showtopic=93814

There you go mate.

thanks mate, 25 (sun sensor) wasnt working, in my garage this is to be expected, but there was a 4c difference from inside and outside so ill see how she runs in the day today!

[tek_01]

is this the same for r33 ?

i know that guide is written for an r32 which has the ambient button, but the r33 doesn't have that button

[adam-__-]

is this the same for r33 ?

i know that guide is written for an r32 which has the ambient button, but the r33 doesn't have that button

Just try holding down the 'cold' button first mate. It should react the same way the R32's unit does.

[sugus]

I also have a problem.

When I start my car 'n turn A/C on, I get cold air. But after the car runs to the normal temperature, hot air comes out.

Any ideas that what's goin wrong with my A/C?

ill try 'FC' tomorrow.

[adam-__-]

I also have a problem.

When I start my car 'n turn A/C on, I get cold air. But after the car runs to the normal temperature, hot air comes out.

Any ideas that what's goin wrong with my A/C?

ill try 'FC' tomorrow.

Sounds like your motor which controls the hot/cold is stuck on the hot. Give the 'FC' thing a try and see what happens.

[m0rt]

okz, mine is startin to annoy me, i've done the test get 25 which i know don't worry bout, get 30 then i go into the 4 range and it goes from 41 to 46 fan speed changes and stuff, then i get into a 5 range where if i push the window demist button it displays 29 i push it agian it shows 26 and again then it goes back to 5, if i push the fan button it comes up with 0, pushing temp down allows a minimum of -3 and temp up allows max of 3 does any one know waht this is??

And how do you get FC to come up do you need a/c on?? eng running??

[m0rt]

scratch that i found the ansewrs on a R34 manual i have, forgot to write my origional problem, when at 18 the air is nice and cool, as soon as 19 is selected its all hot and stuff, would i be lookin in the right direction if i started pokin around at the air mixer door area???

[adam-__-]

scratch that i found the ansewrs on a R34 manual i have, forgot to write my origional problem, when at 18 the air is nice and cool, as soon as 19 is selected its all hot and stuff, would i be lookin in the right direction if i started pokin around at the air mixer door area???

It doesn't seem like the door is the problem to me. It seems to be moving alright. I would probably start looking at the sensors. You said in your previous post (bit confusing ) that you had a temperature reading of '-3'. That's not supposed to be possible.

[sugus]

Sounds like your motor which controls the hot/cold is stuck on the hot. Give the 'FC' thing a try and see what happens.

i've tried to hold the "cold" button but nothing happen (no any "FC" sign) on display screen.

still have hot air

if it caused by those motor, can i fix it myself? or any workshop recommend? (I live in Sydney)

[adam-__-]

You've got to hold the button for pretty long. About 10sec continued after the temp reaches 18 degrees. So hold until it gets to 18 degrees and continue holding until 'FC' comes up (about 10sec later).

You've also got an R33 so I'm not sure if it's the same as the 32's.

[m0rt]

It doesn't seem like the door is the problem to me. It seems to be moving alright. I would probably start looking at the sensors. You said in your previous post (bit confusing ) that you had a temperature reading of '-3'. That's not supposed to be possible.

I found out that the -3/+3 is some form of calibration in which you can set the difference between the indicated temperature and sensed temperature