I've ordered a set of adapters so I can use my gauges to check the high side pressure. I've also ordered a kit that includes dye, UV pen, and a set of glasses. However, don't I need to get the compressor running in order for the dye to circulate the system? I feel like I'm in a catch 22 position.
Fortunately, the warm weather is a way off so I have time.
Thanks for your suggestions.
Deke

 

Thanks. That's a good start and I'll get on it. I think I might have to remove some panels to get where I can see it though.
Deke

 

You might want to read about the pressure transducer (switch). It may be too cold for you to be trying to solve this? Not an expert but you are 10 degrees off from the operating temp that protects the system. read these..

http://picasaweb.google.com/lh/photo...eat=directlink

http://picasaweb.google.com/lh/photo...eat=directlink

Also... I only see mention of reading any pressure on the high side not much talk about the low side. If you don't have one, a manual on CD from Ebay might help you out tremendously.

 

get me up to speed on this make it simple and short facts only =)

 

I'll attempt.

He is trying to check his A/C. Ambient temp just got up to 50 deg in his area.
No pressure high or low side. Compressor is not engaging (I think). Maybe his gauges are not working right? Maybe it is too cold out to tun the A/C. Was reading some test efficiency tables in the manual and the lowest temps in the charts were for 70deg.

 

that table thing is not correct
NO ac clutch ok easy enough go to the ac clutch relay jump it see if u hear the clutch click on and off when u remove the jumper pin 30 and 87

 

Thanks, all for the input. I really appreciate it. I wasn't aware that the ambient temp had to be above a certain point for the AC to operate so perhaps we're on to something here?
First, I have not been able to get the compressor to kick on at all. I do not yet know the high side pressures as I need R134 adapters for my gauges and they haven't yet arrived, but should shortly. The low side reads zero with engine running or off, but I'm not real sure I trust the cheapo Kmart gauge that came with a can of $134a.
Outside air temps in 40s and one day 50s, not sure what the inside ambient temperature is. Obviously the AC system should be reading inside ambient air, correct? What temp should the ambient inside temp be for the compressor to kick on?
I can find no evidence of a leak anywhere and the car is relatively new with low miles.
Could it be that everything is OK, that I just don't have the temps for it to operate? Should the AC kick on if I turn on the defrosters?
As soon as my adapters arrive I'll report both high and low pressure.
Thanks,
Deke
07 TC Touring 3.8L 51k miles
northeastern Michigan

 

07 TC Touring 51k
No AC
Outside temps 50s
Compressor does not kick on
Low side pressure zero, engine on or off
High side pressure unknown until adapters arrive
No evidence of leak anywhere I can find.
Must inside ambient temp be above certain point?
Tnx,
Deke

 

Fox

temperature may be minus 1 000 degrees, you MUST have some pressure inside the AC system. when the engine is OFF, pressure is more or less equal on both sides. only when AC is ON, then you have different pressure in low press.part then the hihg press. part.

no pressure = no AC. no cooling, compressor is not running.....nothing.

 

Thank you. Unfortunately, everything you say makes perfect sense to me, just one (probably irrelevant) question. If the compressor won't engage then how can the high side have any pressure? Currently, until I receive my adapters, I have no way of knowing what is really going on. The one thing that is for sure is that with the engine off or on, the low side gauge (Kmart special) reads zero, even after I added a 14oz can of ID Chill. I'm pretty sure than when I can use my manifold gauges that I won't be any better off, but I don't want to do anything until I get that part out of the way.
More than likely, I have a giant leak somewhere, but so far I haven't been able to locate it. Perhaps one of those leak detector kits with the dye, glasses, and UV pen will help, but I would think that I should be able to see it without a kit. Sure is puzzling.
Anyway, thanks again for the support. I'm not the type to give up as long as I can keep trying something new and I'm not out of ammo yet. What I need to do is get it up on a rack where I can follow every line. I've also ordered a repair manual that may be of some help.
Deke
07 TC Touring Walter P series51k