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UPDATE S90-V90

uid 11021's pic
posted by  dewfpo on  Wed Jun 30 14:12 CST 2010
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last visit: Thu Oct 23 18:34 CST 2014
[RELATED]

There's no high side on the 960/90 series, but it can be read with a Volvo Scan Tool.

At idle with the compressor on the low side system pressures should read between 25-45 psi.

The fan comes on when either the coolant temp is at a certain temperature or the pressure in the HVAC system reaches a certain pressure. When first turned on, the compressor will come and and few minutes later the fan should come on when the pressure reaches the preset psi.

The sensor down at the bottom of the condenser is the one that controls the fan speed for the HVAC operation.

DEWFPO
--
1998 S90 083,228 and 1995 964 154,100






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