pajero aircon

[KCboy]

why kaya nawawal yung lamig ng aircon ng pajero ko kung i turn on the rear aircon ang the coolness comes back when i turn it off....

[nugundam93]

i also experience that pero momentarily lang since the air being blown by the rear aircon is hotter than the fronts and takes about a minute or so (all on #1 setting lang) for the temp to equalize.

di kaya barado na filters sa likod or the aircon at the back's overworked? not sure lang ah, but suggestions lang naman what to check.

[KCboy]

strange kasi, hirap talaga pag summer, on both front and rear, wala na talaga lamig.....

[nugundam93]

hmmm...wala naman sigurong blockage sa condenser 'no?

[KCboy]

wala, usually me lang naman drive pajero so bihira ko on yung likod but kakahiya kung may visitor. d lumalamig eh. la pa naman tint yung pajero ko.

[tebs]

subukan mo muna pa-general cleaning ang aircon mo. front and rear. malamang barado na yung rear mo.

sabi ng mga gumagawa ng aircon, when you're using the front aircon, rear must also be turned on, para di magkabara.

[KCboy]

how much ba pacleaning? wala pa one year since last repair ko sa aircon....due for cleaning na ba?

[tebs]

nung nagparepair ka, kasama ba nagcleaning sa rear?

kahit magisa ka, on mo lagi yung rear aircon mo kahit sa lowest setting lang. para magcirculate yung mga laman loob ng rear aircon.

[OTEP]

Hindi ako expert dito pero hindi kaya expansion valve iyan?

[KCboy]

hirap manghula. pag nandun ka na shop, babaklasin na at talo ka na sa freon so kahit mali diagnosis nila, talo ka na dun.

[OTEP]

Si Mang Mario nagbibigay naman ng diagnosis without necessarily having to take the system apart.

Minsan test lamp at multimeter lang gamit nila.

[KCboy]

saan yung mang mario?

[OTEP]

Sa likod ng SM north edsa. Hanapin mo na lang thread niya dito sa Workshop.

[estee96]

Sir KC,

I have an ex JDM pajero Gen II. I also experienced the same problem, kaya lang pag nakatapak sa gas (recta) malamig. Pag traffic, umiinit na. Yup... mukhang aux fan di ba? Ok naman aux fan, i had it checked. May expansion valve pala sa rear aircon, at yun lang ang sira. After that, malamig na.
Please check na lang, kung naka 'on' ang rear mo, if you hear any form of "humming" sound or noise from the rear aircon that is out of the ordinary. Pwedeng expansion valve! Hope this helps.

Regarding temp. Pag traffic (as it sobrang trafic), my outside temp reading is around 40-42'C, pag normal driving bumababa sa 30-31'C. I think its normal. Also, tama si OTEP, engine temp ang cause ng mataas na reading, especially pag traffic.

[v22]

same symptoms with my besta. malaki hinihina ng ac pag naka ON pati rear, unless naka high rpm.. cause is mahina na ang aking compressor.

[KCboy]

nakau pag expansion valve, mapapamahal na yata yan....

[zeagle]

Aircon kasi plays around with pressure. Usually, pag nawala ang lamig nabago ang operating pressure. May leak, magbabago pressure. Mali ang valve in terms of calibration, iba ang pressure. Sira aux fan, tataas ang pressure. Mahina compressor, mahina pressure. KCboy, malamang expansion valve yan. Baka malaki ang buka ng valve sa likod kaya humihina pressure ng valve sa harap pag-on mo. Subukan mo pa calibrate yung valve sa likod. Pasakal mo ng konti o palitan mo.

[KCboy]

zeagle,
ask ko lang, tatapon ba yung refrigirant ko if they adjusted my expansion valve?

[OTEP]

EV's are usually replaced. Yes papakawalan ang coolant mo. Expect the whole thing to cost less than Php 2K. Labor, parts, materials na iyon.

[odell]

panu pag un malamig naman siya pag ccoldstart... pero pag un temp niya half na tapos pag on mo aircon.. wla ng lamig...