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 AC 1996 RMW

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SweMos



Posts : 5
Join date : 2020-06-27

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PostSubject: AC 1996 RMW   AC 1996 RMW Icon_minitimeSat Jun 27, 2020 3:45 am

My compressor won't engage.
Seems like no signal (+12V) comes to the pressure switch. Is there some known issue? I can force the clutch to engage if I remove the relay and use a wire there. The system is filled with R134.
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jayoldschool

jayoldschool

Posts : 2664
Join date : 2009-06-14

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeSat Jun 27, 2020 11:46 am

"filled with r134": what is the pressure on the low side?
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SweMos



Posts : 5
Join date : 2020-06-27

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeSun Jun 28, 2020 8:17 am

After i feed the blue wire at pressure switch it engages when I put the socket back on pressure switch, no clue why this worked.
But it don't blow so cold air. The pipes are ice cold in the engine bay.
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jayoldschool

jayoldschool

Posts : 2664
Join date : 2009-06-14

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeSun Jun 28, 2020 10:28 am

Has to be a blend door issue under the dash. Turn up the heat slowly and then down and see what happens...
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SweMos



Posts : 5
Join date : 2020-06-27

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeSun Jun 28, 2020 10:35 am

Heat goes up but never gets really cold
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jayoldschool

jayoldschool

Posts : 2664
Join date : 2009-06-14

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeSun Jun 28, 2020 12:36 pm

I'd still start with checking the pressures. How long does the compressor stay on when cycling? A few seconds? Or, 30 seconds or more?

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SweMos



Posts : 5
Join date : 2020-06-27

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeSun Jun 28, 2020 1:12 pm

Around 15 seconds.. The pressure is 45psi and goes down to 25 when compressor is running then up again.
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SweMos



Posts : 5
Join date : 2020-06-27

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PostSubject: Re: AC 1996 RMW   AC 1996 RMW Icon_minitimeMon Jun 29, 2020 1:14 am

I can hear the blend door motor running but can't see anything when looking. How much do I have to tear apart.? The plastic under glove box?
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