Vipec V44 A/c Issue

[PM-R33]

This shoudn't really effect anything as it is just settings of under what conditions to disengage the aircon clutch. In this case when TPS is above 90%.

I still need to take it for a drive tomorrow to make sure the aircon is working, as idling in the garage I couldn't really tell if it was cold and my aircon aint that cold anymore so it's hard to tell. But ECU wise it seems to be setup correctly.

Edited September 24, 2010 by PM-R33

[Trozzle]

You should be able to hear the clutch engaging and disengaging.

For now, until I can set my ECU settings exactly the same as yours, I have removed the solenoid for the A/C pump as well as turning both the AUX3 and DI4 OFF.

Will give this a shot tomorrow, hopefully setting mine the same as yours solves it for me too.

Thanks

[PM-R33]

Yeah let me know how you go. I'm not sure if I will be able to hear the clutch engaging or disengaging because the car is so bullshit loud. I will try though.

[Trozzle]

If you get a second person to press the A/C button for you, then you should hear it with your head in the engine bay lol....otherwise it's still pretty audible for me in the cabin, but my car wouldn't be nearly as loud as yours.

[PM-R33]

Just thought I would update this since it has been a while and maybe you have sorted your issue out

My clutch on the aircon compressor aint engaging no matter what I do with the Vipec settings. I can hear the relay click when the aircon is turned on and the Vipec displays it to be working, but it simply won't engage.

I had the gas level tested and there is gas in the system so it aint the low pressure switch.

So possibly my problem is actually a seized clutch on the compressor? I don't know that much about aircons.

I'm trying to find out whether I can manually give the compressor 12V to see whether the clutch engages. Not sure exactly what wire to do that to though...

Edited November 2, 2010 by PM-R33

[Trozzle]

I haven't fixed my issue unfortunately, gave up when the fking thing just "broke" itself for no reason....like when I got it working, power cycled the ignition, still working....then f**ked again the next morning.

Just ripped the blue relay solenoid thingy out so it just doesn't engage at all....I'll have at it again next time it's gonna rain down here, coz I realised why I loved A/C the other day....drove in some heavy rain and fogged up BAD.

[PM-R33]

F**king aircons lol.

[PM-R33]

Well the plot thickens!

It is something to do with the Vipec in my case afterall.

I kept playing around with the electrics that control the aircon and got it to work.

First of all I checked all the fuses and put different relays in, nothing changed as they are all in perfect working condition. So I got the multimeter out and the test light and started working my way back from the compressor. I discovered that on the low pressure switch to the right of the radiator, if I gave one of the pins an earth BIGNO compressor kicked in and cold air. If I disconnected the relay that controls the aircon and tried this again, nothing happened. Therefore the relay is working correctly and the compressor is working correctly, but for some reason the Vipec isn't switching on that relay.

Would my assumption be correct? The strange thing is, when I turn my aircon on, I can hear a click under the bonnet, but I don't think it is coming from the same relay, sounds like it is coming from somewhere else.

Does any one have a bloody aircon wiring diagram?

Maybe I will just call Ray and ask if he has had any issues with aircons with the V44 on a RB25.

Edited November 4, 2010 by PM-R33

[Trozzle]

Give Ray a call imo...

Otherwise, at least in my case, I'm 99% certain it's to do with the ECU itself or the settings within the tune. Going back to my original troubleshooting, you can see that by changing NOTHING except for the order I was doing things in, it would differ the outcome. Also once it was working, it "broke" again after an extended period of the ignition being off.