My ac come on when i start my car but goes off and on a few times then stays off. why ? it get a little cold then just hot or outside temp. i looked a the clutch while it was run right after start up and it engages and disengages about five times and no more after that. please help me fix it.
I would 1st check your fuses to make sure all are good. Fuse testers are cheap.
Next, I would try your blower motor sensor. On American cars it;s under the dash, easily accessible with just a few screws and 1 plug in. They range in prices, not sure about yours.
lastly, I would think about replacing your unit (switches). If too expensive, try a junk yard, they are always cheaper.
Good luck,hope this helps
Paul
Normally the ac shouldnt be starting when you turn on the vehicle. This shows that there is a faulty ac switch. You need to check the ac switch and then followed by the ac thermostat.
SOURCE: Volvo 2.3 Turbo 1997 stalls when the engine is hot
Check the turbo waste-gate actuator spring for proper tension.
SOURCE: My 1999 V70's AC stops working after a few minutes
this is a major problem on 850 and s-70 models with ECC climate control these cars have MAJOR problems with this system and you MUST have major knowledge of system to diagnose and fix
SOURCE: Loud Pop When I Start My Volvo, generally when its hot outside
it is probably the doors in heater /air conditioning box running through self check to be sure thats all functionin you probably hear the door hitting a stop in the box
SOURCE: TEMP GOES HOT WHEN I START CAR UP THEN GOES TO
Sounds like the thermostat needs to be replaced.
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