Goodman gas furnace light blicks 3 times blows cold air

SOURCE: 1993 goodman status light 4 times blinking

I have a goodman GMP075-3 that won't turn on. I think it is the pressure switch since I do not have a vent blockage. What is a venter and where can I find it??

SOURCE: pressure switch stuck open

It most likely is not stuck..... It is just doing its job. You "most likely" have over problems. To "properly" diagnos this problem you will need a manehelic gauge. You can have a wide variety of problems from as simple as a blocked or disconnected vacum hose to a lifetheatening problem.... a blocked flue pipe or a bad heatexchanger.
BE CAREFULL
GOOD LUCK!

SOURCE: Need to find the pressure switch on my goodman furnace

It's mounted onto the gas valve. It will be a button or lever that you have to push in or down, depending on the style.

SOURCE: goodman furnace fault light blinks 3 times it

Hi, what you have to do is where you see this light flashing, there is a circuit board. Remove the panel. If everything goes black, you have a door switch on the perimeter that you can tape down to restore power to the furnace. On the panel, you will find a error code sheet glued on it telling you what the flashes mean. 3 flashes may say you have an open pressure switch, or 4 may say the inducer motors off or something else. It will almost troubleshoot itself. Find out what the 3 flashes mean and if you cant figure out what to do, contact me and I will walk you through it. It sounds like you have a dirty flame sensor, or an intermittent problem in the ignitor module. Check it out as it will tell you.
Sincerely,
Shastalaker7

SOURCE: Our goodman furnace igniter trys to kick in, but

it sound slike the presure switch is not working , if it is not lighting try jumping it out it may work some times you can fool it in to working