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Search: Posts Made By: captainjunket
Forum: Export Grand Cherokee 2011+ 08-14-2012, 02:36 AM
Replies: 171
Views: 10,170
Posted By captainjunket
Re: Harmonic noise coming from engine...

Yes totaly agree, the VSD that controls the fan speed is set too high or out of calibration. as you can see as you move air thru the condenser with the car moving you dont seem to get the HP noise...
Forum: Export Grand Cherokee 2011+ 08-09-2012, 05:16 AM
Replies: 171
Views: 10,170
Posted By captainjunket
Re: Harmonic noise coming from engine...

Do it on the cold line, it makes no differance what the engine is doing hot or cold but dont have it running running.
Purge in 10 second bursts then run AC and see if there is a gradual improvement....
Forum: Export Grand Cherokee 2011+ 08-09-2012, 02:10 AM
Replies: 171
Views: 10,170
Posted By captainjunket
Re: Harmonic noise coming from engine...

Sounds like the AC compressor is slugging liquid refrigerant at cut in. A common problem in conventioal refrigeration and air conditioning systems. what actualy happens is one of two things the TX...
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