Q: The AC in my truck isn't working - 2005 Ford F-150
My pressures on my manifold gages are reading 0 psi on low side and 200 psi on high side. Supply temp is around 77 degrees. I figure I have a restriction but I wanted to make sure if there is an expansion valve that monitors refrigereant.
My car has 74000 miles.
My car has an automatic transmission.
Your a/c should of cycled out at 24 psi on the low side and you should not let it get to zero. The a/c cycling switch will need to be replaced first then the system rechecked. You will find the system is low on refrigerant from a leak most likely from the compressor front seal. Have the cycling switch replaced and system topped off with refrigerant. Then leak check after the system is operating normally.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
What does the powertrain malfunction/reduced power (RTT) Warning Light mean?
The Powertrain malfunction/reduced power is a warning that is illuminated when the vehicle is experiencing a condition - that if driven can cause damage to the engine, transmission or drivetrain. The warning is to let you know to decrease the...
Wheel Hub Assembly
Hi there. Every tire and wheel on your vehicle is secured to the wheel hub assembly (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-damaged-wheel-bearing). If the wheel bearings or the hub itself are damaged, then it can break, causing the wheel and tires to literally fall off...
My 2003 Town Car is showing that the 8th cylinder is misfiring. Do I have to replace the ignition coil as a result?
Hi, thanks for writing in. A misfire code only says the cylinder is not contributing to power in the motor. You may have no or low compression, a bad coil (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-coil), injector problems (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-injector), or a plug problem (https://www.yourmechanic.com/article/symptoms-of-bad-or-failing-spark-plugs). Have...
Check engine light
The problem with the code that the mechanic is getting is that it says the evaporative system has a small leak. This is why it takes a few days to come up. The leak can be from any of the...
No heat after adding coolant and thermostat almost to H
Hello. If the coolant was that low then that will cause the heater to not work. The most important thing at this time would be to determine where the coolant went. For it to be this low that means it...
Battery light comes on when I crank the car but then goes out. Is this normal?
The battery light and the other warning lights should come on when you turn the key to the on position before you start the car. This is a bulb check function and is normal. Some lights may remain on while...
I got a code p0335 on my 2006 bmw 750I ...I replace crankshaft position sensir cicuit A and more codes pops out
Sometimes solving a series of codes can be like playing Whack-a-Mole. It might be because having one bad sensor can prevent the car from running some of it's self-check monitors. So you solve one problem, the monitors run and the...
Do you think with what I have described that that is the problem
Hi Future. Thanks for the follow-up question. Based on the symptoms you're describing, I would assume you have multiple issues beyond the crankshaft position sensor. The thing about engine codes is that they are simply recording facts on systems that...
My odometer is out on my car. How do I find out how many miles is on it?
Hi Jasmine. Thanks for contacting us today. On a digital speedometer, the mileage is stored in the ECU and simply displayed on the gauge. By having the speedometer fixed, the milage should appear on the dash. You can set up...
Related articles
How Can I Have the Vents Set to Cold Without the AC on?
The The modern automotive HVAC system offers a number of different capabilities to help keep drivers and passengers comfortable during hot or cold weather. There’s the air conditioning system, the heater, and the vent system (which doesn’t use either the...
The Best Used Cars to Buy for First Time Car Owners
Owning Owning your very first car is an exciting time in a person’s life. Likely you want to put a lot of thought and research into the process to ensure you get something that meets your needs, is fun to...
Symptoms of a Bad or Failing AC Accumulator
Common signs you need to repair your AC accumulator include rattling noises during operation, noticeable refrigerant leaks, and a moldy smell.
Browse other content
Maintenance
Cities