Question about Pontiac Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: replace expansion valve
The only expansion valve that I can think of that you may like to replace is on the air conditioning unit....This valve is found usualy mounted onto the AC unit....You'll have to remove the dash board and centre consul....This is qute a job....You should then see the expantion valve on the cabin side of the AC housing....where the pipes go thru into the engine compartment....NOW HOLD EVERYTHING.....before you can remove the valve you need to depressurize the AC unit....That should be done by an expert....The gas is dangerous and you must wear safety googles at ALL times....Once you have removed the valve, you must seal the system so that as little moisture as possible enters the system....If it is left open, you'll have to replace the dryer unit too....when you've finished your replacement, assembly is the opposite as disassembly.....You'll then need to have the system recharged....Don't try to engage it until that has been done....It wont work even if you tried ,as there are pressur switches which will inhibit the opperation....If you have had practice, it will take about three quarters of a day......if not, three or four days
Hope that this helps you
Best regards Johngee10
Posted on Sep 01, 2008
SOURCE: Replace the A/C exansion valve
i am not really sure on this but try these websites fix & troubleshoot heating & A/C its www.automedia.com and the other one is car A/c repair www.directgardening.com if you have a autozone near you there you can rent the special tools you will need take them back and get your money back try www.autozone.com
Posted on May 25, 2009
It looks like the blower unit needs to come out, you need a recycling machine
and a very accurate evacuation and charging setup to make sure the amount of
R134 is correct, as well as the correct oil type and amount that will need to be
added to the system once the part is replaced.
Even a couple of ounces off can make the car not cool correctly
Posted on Jun 14, 2012
Tips for a great answer:
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Remove the filter lid (A), then pull out the dust and pollen filters (B).
Pull out the evaporator temperature sensor (C) from the evaporator fins.
Remove the screws, carefully separate the upper housing (D) from the lower housing (E), then remove the evaporator core (F).
If necessary, remove the expansion valve (G). Use a second wrench to hold the other fitting on the valve so the evaporator line won't twist. Leave the first fitting loosely connected so you can use it to hold the valve while you loosen the second fitting.
Reassemble the evaporator in the reverse order of disassembly, and note these items:
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