Automotive Air Conditioning Information Forum (Archives)

pippo on Tue December 11, 2012 6:27 PM

Year: 1987
Make: Alfa Romeo
Model: spider veloce
Engine Size: 2.0
Refrigerant Type: R12

Low side says 45-50. High says only 100. man, thats low. Get cool ac. Still, isnt aht high psi way too low?? BUT, geez- when the car gets parked/shut off after a trip, the rad cooling fan runs for maybe 1/2 hour!!! Geez- I had to disconnect battery! What could be up, people? Clogged condenser?

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Edited: Tue December 11, 2012 at 6:28 PM by pippo

mk378 on Tue December 11, 2012 8:40 PM

What's your ambient temp? High side highly depends on it.

You'll need to pull a schematic to see how the controls work. Just about anything could be going on with an Italian car.

pippo on Wed December 12, 2012 5:47 PM

OK, MK, ambient (outside ) temp was about oh, 85 deg F. Yes, could be electrical wire feeding the button style temp sensor on the rad fan shroud. That thing is finicky- sooooo delicate. I could check the 2 leads going into it, although, if it was loose, that would trip the fan to run constantly, I think...

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pippo on Wed December 12, 2012 5:48 PM

Somthings goofy about thios site- yesterday, I posted and today as well, but still get 314 posts on 2 differnt days!!

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beware of the arrival

Edited: Wed December 12, 2012 at 5:48 PM by pippo

TRB on Wed December 12, 2012 7:46 PM

Test1

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

TRB on Wed December 12, 2012 7:46 PM

Test 2

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

TRB on Wed December 12, 2012 7:46 PM

Works for me.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

chris142 on Wed December 12, 2012 9:04 PM

I would suspect a stuck fan relay. but im not familiar with this car at all.

pippo on Sun December 16, 2012 7:11 PM

Quote
Originally posted by: TRB
Works for me.

Geez, I finally get it, TRB!! Thanks, Man. I was looking at the "posts" #, which is always the same. That confused me, as Im used to seeing the "post #", which, for each subsequent post is one more than the previous . Not sure if Im explaining it right. But I get itnow. Thanks for checking.

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pippo on Sun December 16, 2012 7:12 PM

Quote
Originally posted by: chris142
I would suspect a stuck fan relay. but im not familiar with this car at all.

OK, thanks chris. Im still in process of looking iinto it. hard, this time of year.......

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Z2TT on Mon December 24, 2012 1:25 PM

Sounds like the Compressor is Tired, at that Ambient Temp, 100 degrees is pretty close to Static Pressure, Amazing that the system still cools. Your gauges might possibly be faulty?

For fans, study the wiring diagrams, they may be ECU Activated. Try Find the Relay and Test it on the bench to see if it's sticking.... otherwise the trigger signal for the relay (Whether it be power or ground triggered), is staying on when it should not.

pippo on Tue December 25, 2012 9:28 AM

thnaks.

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pippo on Mon April 22, 2013 8:45 PM

Youre not gonna believe this, but I left this alone during the winter, and recently added a new higher Amp alternator, and BOOM- the ac fan running problem DISSAPPEARED!!!!!!! No more problem!! How can that happen by just installing a new alternator, people?? I am haaaaaaaaappy!

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pippo on Mon April 22, 2013 8:46 PM

havnt checked psi yet, but am happy with the very cool air. Not c-c-c-c-cold, but cold enuf.

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beware of the arrival

Edited: Mon April 22, 2013 at 8:46 PM by pippo