Question about 1997 Chevrolet S-10 Pickup
1997 s10 pick up ac it works fine when sitting still but when moving doesnt work as well
Your going to need a gauge to see your reading from your hi and low side pressure from your A/C system.
Below are normal car AC pressure readings with 134A.
1. Both low and high side readings are lower than normal, this indicates a cars AC system is low on refrigerant and is under-charged.
2. If both low and high side readings are too high, this indicates an overcharged system – too much refrigerant. This also can indicate that the condenser fan is not working, is too slow or the car is overheating and heat is transferring from the radiator to the condenser.
3. When the low side goes so low that it’s reading shows it is in a vacuum, the most likely cause is a bad expansion valve or blocked orifice tube. Another possibility is a restricted condenser. Blocked condensers are not as common as they used to be but if a compressor fails and comes apart inside the remnants can end up in the condenser causing it to restrict the flow of refrigerant.
4. When the compressor clutch is definitely engaged and the low side is high and the high side is low, the most likely cause is that the compressor is failing – it is not pumping sufficiently. Rarely an AC clutch could be slipping but usually this will be accompanied with a squeal or chip.
The line going from the compressor to the condenser is the discharge line – it is normal for it to be very hot to the touch. The other line going from the drier or accumulator to the compressor is normally colder. The liquid line can be hot up to the point an orifice tube is in place. Just remember that LOW Pressure = COLD and HIGH Pressure = HOT.
Thank you for using fixya and be safe.
Posted on Jun 01, 2010
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Posted on Jan 02, 2017
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