Need help with A/C

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Aug 16, 2004 | 01:23 PM

ptd0647

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Need help with A/C

I have a 98 Explorer w/ 4.0 SOHC and recently my A/C does not blow cold air any more. I check the lower pressure port and it reads around 35-40 psi. I notice that the compressor clutch is engaged all the time. It will not engage if I pull the connector for the lower pressure switch off and will engaged if I jump it. What could be the problem? Any helps are appreciated.
Paul.

Aug 16, 2004 | 04:16 PM

CowboyBilly9Mile

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From: Eastern WA

Possibly a blend door failure.

Aug 16, 2004 | 05:07 PM

ptd0647

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I change to max A/C but only cool air not cold air come out. Could it be the blend door failure?

Aug 16, 2004 | 08:30 PM

Gary B

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From: Il.

move temp.control from cold to warm, does the air get hot? if so blend door is ok. if air temp does not change the blend door is broke or stuck(pencil stuck in it)either way requires housing removal(no fun)

Aug 17, 2004 | 04:53 PM

ptd0647

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The temperature does goes from cool to hot as I change the setting from lower to higher temperature.

Aug 17, 2004 | 05:15 PM

Gary B

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From: Il.

no problem with blend door. now what is wrong? you said the lo side was 35-40 psi. but we need to know the hi side pressure too. you stated the comp. runs all the time?
may just be low on R-134