alright i relaced my coolant temp sensor, my thermostat, my water pump, radiator and radiator cap. but still keeps overheating, and my temp guage just goes all the way up. i pulled a p0128 code and i'm trying to figure out how to repair this so i can actually drive my car happily to and from work? please if anyone can help, i'm about ready to burn this car!!!! 2002 pontiac grand prix 3.1
repair code p0128
- Thread starter dnomaam1
- Start date
minichopper6hp
Banned - Busted For Scamming
did you pressure test the system?
There are two nodules on the coolant system one on the left above the water pump its black with a bolt going into the piping loosen this one all the way out and there's another one on the right on that same piping just loosen that one two turns and open the radiator cap while its cool of course and pour the 50 50 mixture in until it starts coming out of the first bleed screw and seal it up then wait for it to come out of the other and then seal it up as well. You don't need and rtv on the first one after opening the screw it will seal on its own. Hope this helps. 
3100sfi
New member
There are two nodules on the coolant system one on the left above the water pump its black with a bolt going into the piping loosen this one all the way out and there's another one on the right on that same piping just loosen that one two turns and open the radiator cap while its cool of course and pour the 50 50 mixture in until it starts coming out of the first bleed screw and seal it up then wait for it to come out of the other and then seal it up as well. You don't need and rtv on the first one after opening the screw it will seal on its own. Hope this helps.
+1 it's air bubbles
