Car Aircon Problem

**jodski** · June 23rd, 2016 09:37 AM

Some pointers na natutunan ko sa Ceejays

Importance of having a shroud sa area ng condenser fan. Lagyan pag nawawala kahit yung foam type lang para concentrated ang airflow sa condenser... and you also need to check kung malakas pa buga ng condenser fan mo

Kapag nagpalit ka ng filter drier, it is recommended na magpalit na din ng expansion valve as precautionary measure. May chance kasi na yung dessicant na laman ng drier is bumara sa expansion valve.

Invest in a thermometer... check mo temperature na lumalabas sa blower mo. Recommended is 10 degrees Celsius and below ang reading... kapag 12 degrees and up hilaw yan.

Importance of checking your tint kung maganda pa heat rejection specially during hot months...

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**rodetor** · June 25th, 2016 08:13 AM

Originally Posted by ivo3

thanks mga papsie.. problem solve.. replaced compressor, 70/290-300(low-high reading) ata..wala na talaga bumigay na.. stock compressor pa yun considering its 98 model 17 years old hahaha, palit compressor nissan parin, super lamig nanaman

Tama ba? 70 psi ang Low at 290-300 psi ang High readings ng mga pressure ng sa iyo.

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**weisshorn** · June 25th, 2016 11:00 AM

Originally Posted by rodetor

Tama ba? 70 psi ang Low at 290-300 psi ang High readings ng mga pressure ng sa iyo.

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290-300 psi high side? 134a or R12 refrigerant?

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**rodetor** · June 25th, 2016 04:03 PM

I was asking ivo3. Kung yung ang pressure na nai-karga sa kanya, when he install a new compressor.

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**glenn manikis** · June 25th, 2016 06:36 PM

Originally Posted by rodetor

Tama ba? 70 psi ang Low at 290-300 psi ang High readings ng mga pressure ng sa iyo.

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High pressure na yan.. High side should read only 150psi up to 240psi

Low side should be between 25-40psi--

**rodetor** · June 25th, 2016 11:30 PM

Originally Posted by glenn manikis

High pressure na yan.. High side should read only 150psi up to 240psi

Low side should be between 25-40psi--

Paano po sir? Kagaya ng sa akin, ang reading ng low line side, ay 35 to 45 psi. Ok lang kaya iyon? Kung hindi ko pa ipilit mahingi makita sa pinagawan ko, hindi ko rin maaalaman kung ilan ang pressure ng freon na nai-charge sa a/c system ng car namin. Kapapalit ko pa lang ng brand new compressor.

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**rodetor** · June 25th, 2016 11:44 PM

Sabi ko pa naman sa a/c technician kung pwede ko ba malaman, kung sapat ang karga o kulang ng freon sa a/c system ng car ko. Ang kinabit yung low pressure gauge lang, di pa kinabit ang gauge para sa high. Watching the gauge, while the pressure reach 45psi, the a/c compressor automatically engage. At that point, while the compressor is running or activated, it slowly decreases its pressure until it reaches 35 psi, and it disengage the compressor from running.

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**weisshorn** · June 26th, 2016 10:37 AM

Normal na mag disengage ang compressor kasi low pressure na. Hindi dapat bumaba yan sa cut-off pressure kung di pa malamig sa loob ng cabin.

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**weisshorn** · June 26th, 2016 11:40 AM

Dapat pirme ang about 35 psi low side & 150-200 psi sa high side with compressor running till aabutin ang cabin set temperature. Hindi taas baba, cut-in/cut-out ang compressor. Stand-in pressure dapat nasa 100-110 psi, yan ang pressure both low & high side at least 30mins after AC off. Pag di nakaka abot ang low side the most cause ay bara or defect ang expansion valve or filter.

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**glenn manikis** · June 26th, 2016 05:03 PM

Originally Posted by rodetor

Sabi ko pa naman sa a/c technician kung pwede ko ba malaman, kung sapat ang karga o kulang ng freon sa a/c system ng car ko. Ang kinabit yung low pressure gauge lang, di pa kinabit ang gauge para sa high. Watching the gauge, while the pressure reach 45psi, the a/c compressor automatically engage. At that point, while the compressor is running or activated, it slowly decreases its pressure until it reaches 35 psi, and it disengage the compressor from running.

Put an Aircon thermometer-- kung NASA max ang thermostat mo it should reach 0-5degrees... Kung above 8 above hilaw yan..

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Yung reading mo is I presume dual condenser and dual Aircon-- kung single condenser and Aircon nasa weak side yung Aircon mo..you'll probably need to do internal cleaning of your condenser or replaced it with a Bnew one-- or check you aux fan first..
Get an Aircon thermometer-- dapat between 0-5 degrees ang temp. Ng Aircon mo.. Kung yung 18 year old van ko-- nakaka zero degrees-- dapat yung car mo would yield similar results