EXPERT NEEDING A ANSWER GUYS

1998 GMC Yukon

Tiny

carolinacarconnection

August, 25, 2012 AT 9:41 PM

Expert here needing some help with a/c
my truck is a 98 yukon. Had some a/c problems causing the high side to be super high and kick out. Got my blockage fixed but my high side is still running up there pretty high 350-375. Have I blown my compressor? System has been flushed oiled and vac'd and charged with the correct amount of r134.

FOUND 58 RELATED QUESTIONS

15 Answers

Tiny

carolinacarconnection

August, 25, 2012 AT 9:45 PM

Ps new condensor new reciver dryer new orifice tube.

Tiny

KHLow2008

August, 25, 2012 AT 9:57 PM

What is the low side?

Tiny

carolinacarconnection

August, 25, 2012 AT 10:15 PM

55-57 psi ambent temp is about 96-98

Tiny

KHLow2008

August, 26, 2012 AT 6:11 AM

There seems to be too much freon in system.

Tiny

carolinacarconnection

August, 26, 2012 AT 5:30 PM

Its not a overcharge issue. It started running high when the first 8 ounces were added

Tiny

KHLow2008

August, 26, 2012 AT 5:36 PM

Was the system evacuated? If it is not overcharging then there is air in system. Both low and high are showing high pressure.

Tiny

carolinacarconnection

August, 26, 2012 AT 5:52 PM

Yes the system was vacd for 45 minutes and pulled to 29hg v. From what I understand 55 psi on the low side is fine for 100 degree ambient

Tiny

KHLow2008

August, 26, 2012 AT 6:15 PM

Here are the specifications.

Referigerant is 36 ozs without rear unit and 64 if with rear unit.

Tiny

carolinacarconnection

August, 26, 2012 AT 6:20 PM

At 2000 rpm thats right where im sitting on the low side. High side shoots sky high and kicks out

Tiny

KHLow2008

August, 26, 2012 AT 6:29 PM

If you are sure the expansion valve, condenser and referigerant is correct, the other thing that can cause this would be the condenser is not being cooled sufficiently. Try spraying a fine shower of water onto the condenser and repeat the test. I don't think it is the compressor that is faulty because a bad compressor would not be able to push very high pressure, unless the relieve valve internally is stuck and supplying excessive pressure.

Please login or register to post a reply.

Air Conditioner Recharge - Simple
Serpentine Belt Replacement Chevrolet
Serpentine Belt Replacement
Serpentine Belt Replacement Chevrolet Tahoe