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Ac Pro Gauge Goes Up And Down
Ac Pro Gauge Goes Up And Down. The air blows hot when the gauges go down, and cool when they go up. When the compressor cycles on you should see the needle on your pressure gauge begin to drop.

If it is, there may be an issue with either the alternator or the voltage regulator (which is internal on the pcm). When the compressor turns off you will see the needle move back to a higher pressure. You will see the low side gauge at 45 psi, drop quickly to 20 psi, at which point the compressor will cycle off.
Then The Water Flows In Enough, The Pump Primes And Starts Pumping, Then It Sucks The Skimmer Dry Again And The Whole Cycle Repeats.
You probably have trapped air in. When the coolant goes through the heater core it gets cooled off enough that when it returns the thermostat closes again momentairly. You suck the water out of the skimmer and lose prime.
Discussion Starter · #1 · Nov 11, 2010.
First check fuel pressure with a mechanical fuel gauge that attaches to fuel line schrader valve. The radiator could be plugged, could have plugged cooling passageways, could have a defective water pump, loose belt issue, collapsed hose, excessive load on the engine due to dragging brakes, underinflated tires, and so forth. So the temperature goes up and the thermostat opens again, and then it goes back down.
So Is The Temperature Gauge Changing Is Normal Or I Have To Check The Car.
When the compressor cycles on you should see the needle on your pressure gauge begin to drop. However, when the ac pressure switch goes bad, warm air might be. While charging, shake the can up and down, alternating between 12 o’clock and 3 o’clock position.
I Have A 2008 Focus That The Temp Gauge Is Acting Up.
What does it mean when your temperature gauge goes up and down? Car ac pressure too high fix overcharged a/c gauge fluctuation reading jumps up down. When reading the pressure, if the arrow is below the range then charge the car until the needle on the pressure gauge is in the range.
When The Air Temp Gets Above The Mid 80'S, Then My Temp.
When you turn on the air conditioning, you expect to feel cold air pour out. If it went up and stayed up you might begin to be concerned. At this point, he compressor will kick back on and the cycle will repeat itself.
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