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While driving yesterday the AC in my Civic was working great on my way to the store. When I was going to leave the store my car started fine, but the idle dropped quickly like it was going to stall then it normalized and I noticed the AC was no longer working. There IS pressure in the system, all I did to check this was push the schrader valve a bit. I checked all fuses, swapped the ac clutch relay and the condenser fan relay, but the clutch still won’t engage. The blower motor works, condenser fan works; I jumped the pressure switch on the receiver drier, the clutch still didn’t engage.
What’s a good next step to take?
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Don’t you have to evac the system again and refill you forget to purge it, like Eric says he does and I seem to do as well ? I didn’t see in his recharge video if he stated so. I would think so because how would you do it any other way, unless you know of something I don’t that’ll work.
Air takes up volume in the system displacing that much room for refrigerant. I suppose if you want a “perfect” charge you would have to evac and recharge. If the only air that gets in is the few milliliters of air in the service hose it probably isn’t worth the cost of evacuating unless there isn’t much refrigerant in there.
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