Question about 2002 Mitsubishi Lancer

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I have a 2002 Lancer and the AC works pretty well if I start the car and it's not really hot. Then after driving for a while it stops throwing cold air. I checked the freon and the gauge said it was something else. What could it be?

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  • ajshope Jun 02, 2010

    I notice that when I turn the AC on a belt or something starts squeaking a little. It's nothing major and it's not deafening or anything, just wasn't sure if that could be an issue?

    Basically it stays really cold as long as I'm not in heavy traffic or the temperature is super hot. A lot of times it will actually start throwing warm or even hot air.

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The noise from the belt could be a loose belt which could affect the cooling. The slipping could also be cause by the compressor being hard to turn when it's trying to cool. Watch the compressor when it's running. It should be engaged by the clutch for a while and then disengaged for a while. The line from the compressor should be cold. Is the radiator fan running as it should when the compressor is running. If the compressor cuts off and on quickly then the freon is low.

Posted on Jun 02, 2010

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  • Mitsubishi Master
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Freon is not used anymore. It has been replaced with R12 or R26, (no idea what R12/R26 is, but it has no impact on the ozone layer). AC units useing freon cannot use R12 without some modifications. Some repair shops will tell you that the entire AC unit needs to be replaced. That will cost serious $s. DON'T believe it. If your AC needs conversion only a few parts need upgrading at about half the price. Before you consider that option try turning the AC off and then immediately turning it back on. If that helps, it may indicate the compressor clutch is sticking. Also try turning the temp control to a warm setting the quickly move it to the coldest setting. If that helps the problem may be with the AC thermostat.

Posted on Jun 02, 2010

  • Bob Korsu
    Bob Korsu Jun 05, 2010

    The squeaking is probably the belt which drives the AC compressor. Tighten the belt and your AC will probably work fine.

  • Bob Korsu
    Bob Korsu Jun 05, 2010

    The squeaking is probably a loose belt for the AC compressor. Tighten the belt and your AC should be fine.

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Freeon is good dont know what else it could be. when its cold out the ac works fine but when its hot it doesn't blow cold? WTF


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Same happening here


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