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My idle doesn't react to A/C! 900 1993

posted by  spasske on  Wed Aug 13 09:01 CST 2003
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last visit: Thu Oct 23 10:11 CST 2014
[RELATED]

I'm not familiar with rex/regina but the LH2.2 cars have a switch from the AC unit to the ECU which changes resistence when the AC is turned on. I think the LH2.4 cars also have a solenoid switch from the compressor that does something.

Find the wiring diagram for you fuel injection computer and check that the resitence changes when the AC is on.

BTW the Volvo manual for the fuel injection system is excellent and affordable. It has very detailed instructions on how to check components.
--
Paul NW Indiana '89 740 Turbo 103,000






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