1994-2002 [Subscribe to Daily Digest] |
![]() | [Main NG900 & OG93 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
It sounds like the A/C and cooling fan is working perfe Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Re: Saab 900S No Radiator Fan When A/C On, David Loewen, Thu, 5 Jun 2003 07:13:28 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Some explanations about the Rec/dryer switches.
The 2 wire (BL and BK) switch is a "hot climate" installed switch, not all markets have it.
It turns on the HIGH speed cooling fan at 22 Bar.
The 4 wire (WH, GN/GR, BK and BL) switch is a multi function switch.
It closes a ground circuit over BL and BK at 16 Bar and turns on the LOW speed cooling fan, and opens the circuit (turn off fan) at 12 Bar.
The GN/GR and WH wires closes a circuit at 2 Bar (engage the A/C clutch) and opens the circuit (disengage the A/C clutch) at 30 Bar. This function is used as a mean to turn OFF the A/C compressor when the amount of Freon is to low (low pressure) and turn OFF the A/C compressor when pressure is too high (engine over heat and A/C pressure protection).
So as I said, your A/C system is probably working as it should, the cooling fan is not suppose to kick in as soon as the A/C clutch engage (like it did on the older 900 model)
Anders
posted by 67.113.85...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
![]() |
![]() |
![]() |
![]() |
![]() |