Question about 1996 Cadillac DeVille
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Posted on Jan 02, 2017
Sounds like you have a problem with the pressure switches on the ac system. Find the aluminum lines for the ac, attached to the lines are two pressure switches plugged in to the car wiring harness. Make sure the sensors are tight into the fittings on the lines. If they are unplug them one at a time and bridge the two terminals in the plug going to the car's harness not the switch, with a jumper wire or cotter pin which ever wire turns on the ac compressor remove that switch and take it in to the auto parts store and get another one.
hope this helps you out
Posted on Jan 07, 2009
first "Evacuate the system" make sure it holds 18" of vacuum. If it does it is safe to charge you must put the oil back in the system after evacuation and before the refrigerant. The amount of refrigerant should be marked on a label under the hood.
Posted on Jul 27, 2009
SOURCE: my ac wont work
Must be Air-Condition System Lines/ Hoses leaking R12 Freon (gas).
MAYBE THE PULLY HUB BEARINGS FAILED OR
DUE TO VERY LOW R12 FREON (GAS ) will not work.
Because there is a switch in the receiver/dryer prevent AC from working when low R12 Freon present, to protect the system & compressor damages.
You must fix the leaks, before recharging it.
They must **** the old (residue) gases from the system & lines / hoses...... & stay in the vacuum pump 30 minutes to proof no more leaks.
Recharge some oil for the old type R12 Freon gas.
Before recharge it to 62-67 psi R12 Freon
See the web site like www.youtube.com/video site to see How they service & repair air-condition system?
Put the question to their search window.
This is the question u should.
How they service & repair air-condition system?
Posted on Aug 04, 2009
The most common overheating problem with the Northstar engine is a blocked purge line. It's job is to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.The hose goes in to the engine to a crossover and comes out the other side to near the thermostat housing,the blockage may be there.
Posted on Feb 27, 2010
the shop is trying to sell something not needed. i have done many change overs without changing anything but refrigerent ant adding they oil supplied in the 35$ change over kit offered everywere.some have many years and miles on them and are ok.the arguement the shops will give are well sir, your compressor will go out.not, and if it did so what change it when it broke. the orings will leak.not my first change over kit job was in 1999 and the a/c still works fine. so get the r12 to 134a kit at walmart it will work unless it dont work now wich would mean it leaked out or some other failure. if so fix leaks/repair system then recharge
Posted on Jun 18, 2010
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