Ac pressure switch

Ac pressure switch

Postby gengomepyle [OP] » June 9th 2020, 3:32pm

I have a 2003 Astro, do I need to vacuum down my system to replace the ac pressure switch?
2003 Cargo Astro Van
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gengomepyle
Fueling (3/8 tank)
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Van Model Year: 2003
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Re: Ac pressure switch

Postby Leeann_93 » June 10th 2020, 4:17am

No. There’s a seal to prevent that.
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'99 Safari XLE AWD - broke
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Re: Ac pressure switch

Postby gengomepyle [OP] » June 10th 2020, 8:22pm

Would a bad pressure switch cause the ac clutch from disengaging? It doesn’t disengage unless I turn the ac off.
2003 Cargo Astro Van
Original Poster [OP]
gengomepyle
Fueling (3/8 tank)
Fueling (3/8 tank)
Years of Membership: gengomepyle has been a member for 2 full yearsgengomepyle has been a member for 2 full years
Posts: 44
Topics: 10
Joined: December 2017
Location: Largo Fl
Gender: Male
Alias (AKA): gomer
Van Model Year: 2003
Van Make/Model: Chevrolet Astro
Extra Info: 4.3

Re: Ac pressure switch

Postby Leeann_93 » June 10th 2020, 10:24pm

I had to replace the switch on the accumulator on my '93 Bravada because the compressor wouldn't run until my husband jumpered the connector. That is the low pressure switch, though - and that's the switch I was thinking about when I answered you.

The high pressure switch is on the back of the compressor and I actually don't know if that requires you to recover the refrigerant first. I've never had to replace that one.

03astro_AC.jpg
'05 Astro AWD vin X
'02 Astro LS AWD vin X
'00 Astro LS AWD - WIP
'99 Safari XLE AWD - broke
'93 AWD EXT vin W - real broke
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