92 240sx A/C intermittent

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jza80king
Posts: 119
Joined: Mon Aug 30, 2004 1:06 pm
Car: 1992 Nissan 240SX
1998 Toyota Supra Turbo

92 240sx A/C intermittent

Postby jza80king » Wed Jun 09, 2021 11:53 pm

I'll keep it short and simple. 92 240sx, A/C will blow cold then all of a sudden, it won't. I've checked the compressor when it blows cold and the clutch is moving and when it doesn't blow cold, the clutch is stopped. What are the chances the refrigerant (R12) is just low?
Last edited by Rogue One on Thu Jun 10, 2021 4:17 am, edited 1 time in total.
Reason: Revise title


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AZhitman
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Car: 72 240Z RB25, 63 Bluebird RHD, 63 NL320, 67 WRL411, 67 SPL311, 68 510 SR, 77 620 SR20, 92 SE-R, 97 D21, 98 S14, 11 LS460L, 12 Titan 4x4, 20 MX5 Club.
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Re: 92 240sx A/C intermittent

Postby AZhitman » Thu Jun 10, 2021 8:35 pm

Good chance. I'd recommend pulling vacuum on the system (check for leaks), install a R134 conversion kit, and charge with 134.

jza80king
Posts: 119
Joined: Mon Aug 30, 2004 1:06 pm
Car: 1992 Nissan 240SX
1998 Toyota Supra Turbo

Re: 92 240sx A/C intermittent

Postby jza80king » Thu Jun 10, 2021 8:52 pm

AZhitman wrote:
Thu Jun 10, 2021 8:35 pm
Good chance. I'd recommend pulling vacuum on the system (check for leaks), install a R134 conversion kit, and charge with 134.
That's what I'm leaning towards... Conversion kit, vacuum the R12 and recharge with 135a.

jza80king
Posts: 119
Joined: Mon Aug 30, 2004 1:06 pm
Car: 1992 Nissan 240SX
1998 Toyota Supra Turbo

Re: 92 240sx A/C intermittent

Postby jza80king » Wed Jun 16, 2021 1:09 pm

I'm reading both that you need to replace the mineral oil with PAG oil and that you don't. Anyone have any personal experience?


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