Aircon Problem during hi speeds

[tomtom]

Hi sirs,

Whenever I drive within the city, I do not have any probem with my A/C. But the problem starts when I cruise in NLEX or SLEX specifically during a long stretch or road. Humihina po yung lakas ng buga ng A/C pero may lamig naman. What I do, I turn it off muna and then after 20 mins on ulit. Malakas naman ang buga ulit. pero kapag long stretch, 15 kms pataas with a constant speed of 70kph pataas, humihina ulit yung buga ng A/c.

Ano po kaya ang problem. Blower kaya? Thanks.

[downshift2]

Nope its not the blower.Palit ka ng expansion valve at general cleaning na rin.. Malamang nag yeyelo yung evaporator kaya mahina yung buga ng aircon.

[tomtom]

nagpalit na ako sir ng expansion valve and linis din last april. napansin ko din na mas malamig ang A/C kapag tumatakbo compared kapag nakahinto pag traffic. hindi naman sya mainit mas malamig lang kapag hindi nakahinto.

may connection kaya ito?

[bambino]

tomtom, humihina ba ang buga ng blower ? yun ata ang pagkakaintindi ko.

[tomtom]

tomtom, humihina ba ang buga ng blower ? yun ata ang pagkakaintindi ko.

correct sir, humihina lang ang buga ng blower pag nasa long stretch of road, 15kms pataas, with constant hi speed. pero kung city driving naman, ok naman ang buga ng A/C

[bambino]

try mo i monitor yung positive and negative ng blower motor mo .

kailangan mo ng multimeter sa procedure .

with the voltmeter hooked-up to the plus side , at least 13v at highway speed.make sure to connect the neg lead to ground and record the result for now.

[dealermate]

Hi sirs,

Whenever I drive within the city, I do not have any probem with my A/C. But the problem starts when I cruise in NLEX or SLEX specifically during a long stretch or road. Humihina po yung lakas ng buga ng A/C pero may lamig naman. What I do, I turn it off muna and then after 20 mins on ulit. Malakas naman ang buga ulit. pero kapag long stretch, 15 kms pataas with a constant speed of 70kph pataas, humihina ulit yung buga ng A/c.

Ano po kaya ang problem. Blower kaya? Thanks.

General cleaning lang po ng evaporator kailangan mo kaya humihina blower mo pag long run kasi nag yeyelo ang evaporator dahilan para di makalabas ang hangin

[jick.cejoco]

[quote=dealermate;1305508]General cleaning lang po ng evaporator kailangan mo kaya humihina blower mo pag long run kasi nag yeyelo ang evaporator dahilan para di makalabas ang hangin[/quote

i agree with dealermate, this points out to evaprator icing caused by any or more of the following:
dirty, clogged evaporator
low charge and pressure
marginal operation of an expansion valve (expansion valve system)
restricted orifice tube ( closed cyle orifice tube type)
dirty or partially clogged inlet air filter
jick