I just installed a new ac compresser on my 2000 gmc pickup I pre oiled it before installing I also replaced the dryer and orfice tube and flushed the system but the compresser is making a noise

Johnny Brown

• 5763 Answers
• Posted on Apr 06, 2010

SOURCE: My ac compressor locked up. What needs to be

Well, the compressor and dryer and orfice tube should be replaced, then the rest of the system flushed, with the old compressor and dryer and orfice tube removed flush the condensor, the evap-core and the hoses, some of these chryslers use a liquid line with a built in orfice tube, if thats the case on yours then replace the line,now, ive found that when the compressor locks up and metal shavings get into the system, they lodge in the condensor fins, flushing gets some out but not all,and then as the system operates they loosen up and flow through the system clogging the orfice and maybe damaging the new compressor,then ive had some that ended up working fine,if it was my van i would spend the extra money and replace the condensor now, hope this help, good luck.

SOURCE: how do I install the air conditioner orfice tube

You are not looking in the right place, it is either in the lower metal line out at the condenser with the 45 degree angle, or it is further up on that sme line where it connects and there will be demples in the line about three inches from the connection to hold the orifice tube in place and you should use an orifice tube extraction tool to remove it, and be sure not to break the end off of the orifice tube trying to remove it with needle-nose pliars because then it will really become difficult to remove. Here are a couple of diagrams that should help you out.


Orifice Tube.



Orifice Tube Location.

SOURCE: 2000 vw jetta 2.0 checked oil no oil showed on dip

Most likely place for oil into coolant is oil cooler, the aluminum box that mounts between the oil filter and a flange that comes off the block.

SOURCE: my ac was blowing fine

If the car was retro fitted with R134a this was a common problem. There was a low side pressure sensor that needs to be changed. R134a runs different pressures than the r12.. When you go down the road the condenser cools off the system and the pressure drops below the minimum pressure. You need to make sure that the system is fully charged, not just cold to the feel. Both pipes coming out of the firewall need to be the same temp. this makes sure that the evaporator is flooded.
I hope this helped. Re-post if you need more info. Have a nice day and good luck.

SOURCE: 1999 GMC Yukon. Rear AC cooling great. Font AC not

If the rear is working well and front is not I would suspect a blend door or actuator issue in the front.Double check and see if you can hear anything moving when you are adjusting temperature from hot to cold.Also check and make sure the air flow moves properly from defrost to vents and floor etc.