Question about 1997 Pontiac Bonneville

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1998 buick regal - where is the orifice tube located

How do I access the tube once I find out where in L it is ??????

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Procedure:
Tools Needed:
13mm Socket - to Remove cross brace above airfilter box
10mm Socket to remove Air Box
11/16 openend wrench to hold one end of ac line coupler
15/16 wrench to turn the AC line brass nut

1:) - Recover R134a Refriderant Low side by firewall center (Black Cap)
Highside by Air filter Box (Driveside)
2:) Remove cross brace
3:) Remove Air Filter
4:) Remove Cover from Airbox Box (S.S. Latch)
5:) Pull rubber gromet from above Computer cable
6:) Lift out Computer & Set out of way.. No need to remove wires
7:) use 10mm socket to remove the three bolts in the bottom of Air Box
8:) lift out air box (Good time to wash out)
9:) MAKE SURE YOU HAVE NO FREON IN SYSTEM...Proceed
10:) On the condenser lower line remove using opened end wrenches listed above. (Condenser Lines: Drivers Side by radiator)
11:) Now the fun part. Follow the line towards the rear of the engine compartment. Unhook the sensor connector. Keep following this line you will go past the Highside test port loop & when you see the brass nut up by the firewall remove this line (Use same open end wrenches). The part it's connected to will move some because you unhooked the line up front (Right). Once you get it off look in the part that you unhooked the line from.
12:) Grasp the end of the orfice with a needle nose pliers & pull out. Note orentation of the orfice. If you drop just look for your plier marks.
13:) Oil new orfice o-ring w/ PAG oil & replace. Also replace the other two o-ring w/ new ones. Again oil o-rings w/ PAG oil.
14:) Reverse to assemble. The Line nuts do NOT need to be very tight.
15:) Evac. system & charge with 134a & use the amount on the label. Mine was 1.88lbs = 30.08oz.
16:) Your Welcome!! Ron

Posted on Jun 10, 2012

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The a/c orfice tube if thats what you want it will either be in the inlet line going into the condenor or it will be the hose from condenser to accumulator

Posted on Jul 22, 2009

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Remember the flow for the a/c system is :
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