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Air con problems!

zzsprade

By zzsprade,
in General Maintenance

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zzsprade Enthusiast

zzsprade

Posted
Posted

Sorry guys this may be a bit lengthy... but I figure the more detail that I give the more it may help.

A while back my A/C started constantly blowing hot air on any setting. Even when it was off I could slightly feel it around my feet. So did a bit of searching on the forum and later even tried SDU.

I honestly thought it was the coolant, which I should get filled anyhow so if someone has any recommendations for someone in Brisbane that can do it at a good rate I am all ears

So I did a diagnostic test and came back with a PBR error (26), with all modes ok. So at this stage I was thinking servo or sensor problem. I had no idea what a PBR and still am a little unsure. Also I only had 2 temp readings from the diagnostic test which both were a little strange (29 degrees on the 1st and 41 degrees on the second - I thought that there would be more.

Then later I reset my ecu. It still was hot air, but on the recommendation of something I read here I put my air con up past 32 then back down to 18 and it was blowing cold air again for a while. I kept on playing with it and it stopped blowing cold air.

Thus, my thinking is that it probably is not mechanical (ie a servo) but sounds more like a sensor. Possibly the one behind the slits since my dash was ripped off months ago when my car was broken in to.

Does this sound about right to everyone?

Any suggestions guys?

Cheers!

-Alex

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Sumo Mentor

Sumo

Posted
Posted

zzsprade: when you car is running get out and check if the compressor is cutting in and out, you can tell on most if its cutting in and out because the revs will vary (you know when you hear a car load up when the ac comes on). If its cutting in and out they have a pressure switch in the a/c system that stops them from cooking themselves due to low gas or high gas... its gotta be just right. If you can diagnose these symptoms, take it round to a gas mob and they should be able to help, otherwise it could be in the wire that goes to the compressor, not putting power into it? Anyways, its prolly best left with someone who knows what they are doing - because by the rule of thumb A/C's can be expensive to find parts for and if you go mucking round with it, you may cook something.

Sumo

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