callmechad

as topic says. my a/c is so freaking hot even when i have it on cold. and yes i have plenty of coolant. what could it be?

Former User

1) Is the heater valve on the firewall stuck open?

2) Does the condenser fan run and the compressor clutch engage when you press the A/C button? Does the A/C button light turn ON?

callmechad

umm im not sure about the valve on the firewall stuck open how could i check?

fan does run i beleive the one by the radiator? compressor clutch? how do i check? and yes the light does come on for the A/C

Former User

For the heater valve, see diagram in my first post. Is the cable connected? Does pushing the dash heater lever to the extreme positions move the heater valve to the open and closed positions?

When you press the A/C button, you should hear the compressor clutch make a click sound when it engages.

callmechad

yes open and close positions work fine. ill go check and see if i hear a click sound. and for the heater valve the picture is hard to make out were on the car i should look at lol. sorry im new to this haha.

callmechad

ok as for the click sound. i dont really hear a click. but when i hit the A/C on my rpms goes up some when i turn it off it idles down some. so i guess that works right?

Former User

Do you hear the compressor clutch make a click sound? Have a friend push the A/C button while you stand above the compressor to listen.

Former User

If you believe the clutch is engaging, the next step is to hook up a manifold gauge set to the low and high sides to determine whether the R134a refrigerant pressures are low or abnormal. You may be able to rent the gauge set from a local auto parts store. With the A/C running, the low side should be 22 to 36 PSI and the high side should be 220 to 295 PSI.

callmechad

how much does that cost?

Former User

Try to rent the gauge set from an auto parts store (free hopefully). Otherwise, the gauges cost $50-$100.

civic_driver

Could be a leak in the A/C system somewhere. We just had a similar problem on my dad's Lincoln and there was a leak in the accumulator.

trustdestruction

If you need to see if the clutch is engaging, take a look at it with the A/C off. There's some short studs or bolt heads sticking off the side of it and they will be stationary with the compressor not engaged. When the compressor engages, you'll see the side of the compressor spinning and the studs will be spinning too.

callmechad

ok heres an update. my air has gotten alot colder. but its still not cold enough. now what could the issue be?

Former User

What so far did you do to get colder air?

runninclean

**** a/c roll down the windows