ok i have these 2 codes p146b-d i first cleaned the gas port thinking it may be realated and it is the easiest to do. i drove it for a few days and it did not clear so i cleared the codes and the next day after driving maybe a mile it came back this time only the p146d code.
i see it is related to the purge pump. and or purge valve. i think i see it on the passenger side next to the firewall but i'm not entirly sure that is it. it looks like it from rock auto photos.

anyway the wires are good and o tugged and pushes on all the connections in the area and they all feel good and none came off. and no wires look beat up.

so outside of tossing a new purge valve in it if that is it am i looking at the correct part? here are some photos of what i think is the part? so would i be good to replace this or do some more troubleshooting? i could take it off and measure the coil but being the code came back so fast i'm leaning on a bad part someplace..but if the gas port can cause this code and make it show up that fast then working on that would be the better thing to do. but then to find that part. i do not see it in rock autos site. thanks

That might be it. I can't really tell at this angle. Can you take some pictures from different angles?

i can but it is a bit crowed so here are some blown up, from yesterday and the top 3 are today as close as i can get without taking it out. it is located in the upper left corner looking at the engine. thanks





this is looking down at it




but it is rather cluttered in that spot. that is why i did one from over the front and then close and them pointing.

what i need to find out is if the p146b and or p146d are set by this valve? the buick code in my scanner says evap pump but in rockauto site i do not see a evap pump for parts.

It'* the purge valve. It has a line going into it from the back of the vehicle and the other end goes to the intake. It has an electrical connector on it with three wires.

I don't see a purge pump listed for that car, nor for it'* slightly older brethren. I bet you have a bad purge valve. Much more likely anyways. What I'm seeing in the pictures doesn't look like a purge valve. I bet they stashed it under the plastic beauty-cover/noise-damper. Take that off and look for something like this:



The red(?) side will have a bolt that holds it to something bigger, and the other end will have a fuel line (top of picture) and a wire with connector on the end (right side of picture).

Either way, take off the plastic beauty-cover/noise-damper and get us a few pictures of that. You might want to add some light from an angle, and also use the flash, to get better lighting on all that black plastic.

Don't forget to put the oil cap back on to keep dust out while you're fiddling with it.

thanks but i do not see anything like that under the cover either but i will double check again. and take photos of the top of the engine and area. i got some more photos but i do not anything that looks like a purge type pump. and like i said rockauto does not have a purge pump for parts on this car.

here are the top engine photos i do not see anything that looks like a purge pump. the item i point to looks like the purge valve. so that may be what is giving me the p146d code and possible the p146b code i got along with this code the first time.
if it was the filler port i think that code would have taken a bit more time to show after i cleared them the fist time as well. but it comes back within a half mile of driving. from a cold start. so i think i will get this valve in the acdelco brand. and see if that cures it. thanks
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ok this is the part i think is the issue. but i just do not see it on rock auto so it is not the purge valve as it has 6 pins and the pruge valve has 2 pins. and i ran the numbers on the part and i did not find it in rockauto. so does anyone know what this is? i just ran the numbers on the internet and it comes up as a tank vent valve. seems it is not on rock auto. so can the tank vent valve throw the p146b-d codes? also i can blow thru it both ways real easy so it may be stuck open. it would seem to me it should be closed until it is told to open. but i may be wrong. thanks

The 'd' indicates it'* a problem with the pressure sensor on the tank.