AC does not turn on right away when I turn it on

Tiny
BER04145
  • MEMBER
  • 2002 NISSAN FRONTIER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 185,000 MILES
How to replace the A/C pressure (transducer) switch on the drier? Do I need to remove the Freon?
Thursday, September 7th, 2017 AT 1:13 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,573 POSTS
That sounds more like you have a system that is a bit low on charge and as the engine heat gets to the R134A and makes it expand and increase the system pressure it starts working. It turns on at between 28-31 psi. Does the compressor cycle a lot as it works?

Anyway if you wish to replace the switch, yes you need to recover the current charge, replace the switch, draw a vacuum and recharge.
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Friday, September 8th, 2017 AT 1:00 AM

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