Easy lifehacks

Where is the vacuum check valve on a corvette?

Where is the vacuum check valve on a corvette?

If the green LED above the climate control buttons is NOT flashing when the car is running, there are likely no fault codes stored. While you could have a more serious problem such the programmer, the fist thing I would inspect is the three port vacuum check valve located under the right side fuel rail cover.

Where is the vacuum hose on a GMC Truck?

Its the silver line next to the trans dipstick tube The year range is pretty non specific. If the truck has a vacuum hose to the transmission (to the vacuum modulator), the line will be a metal tube attached to the large tube that the transmission dipstick is in. It will come up and connect to a hose that will run to the base of the carburetor.

Why are the vents on my Corvette breaking off?

It is common for the ports to break off as they become brittle due to age and temperature, when that happens the system defaults to defrost mode for safety reasons. In the pictures below the valve is the black and white plastic piece with three hoses attached, yours may look slightly different.

What kind of air conditioner does a 1985 Corvette have?

1985 Coupe-L98/Auto,Bright Red/Carmine. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe. Sounds like a bad HVAC programmer issue, but there could be an electrical problem, such as a loose/bad ground that could cause this.

Why does my GM Truck AC keep blowing out?

The 1995 and earlier have a different circuit board layout, the transistor numbers and concept should still apply but the the locations shown in the video will be different. If you find that the transistor keeps blowing out after replacement, then its because of too much current passing thru due to a short to ground in the circuit.

Why does AC stop blowing out the defrost vents?

After installing a new blower fan motor the ac would only come out the defrost vents. The factory vacuum check valve is very hard to get to. So i bypassed it. Now it is working like it should and ac comes out the dash vents. I do not have a vacuum reservoir installed i will have to see if i will need to add it later.

If the green LED above the climate control buttons is NOT flashing when the car is running, there are likely no fault codes stored. While you could have a more serious problem such the programmer, the fist thing I would inspect is the three port vacuum check valve located under the right side fuel rail cover.

Why does AC come out the dash vents?

The factory vacuum check valve is very hard to get to. So i bypassed it. Now it is working like it should and ac comes out the dash vents. I do not have a vacuum reservoir installed i will have to see if i will need to add it later. Don’t forget to like, comment, share and subscribe to my channel. Loading…

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Ruth Doyle