Sounds like it's not working. Mine did that when it wasn't running.

If you pull the cap off and look down into the neck you should easily be able to see bubbles coming up. Or just siphon a little out until it's at the bottom of the neck and it should REALLY be sloshing around.

 

Where can I get a new pump or does anybody got one for sell

 

Just checked mine. Its working haha.

 

x2..

 

Where should I hit it with a hammer and is the pump loud when its working

 

Hammer mod ftw lol and just tap the pump you will know when it turns on it makes a distinct noise

 

Maybe I'm not hitting it hard enought lol don't want to break it

 

Make sure you're hitting it on the metal part of the motor and not the plastic part which houses the impeller.

 

Your pump may be shot lol

 

You acutally want to hit the pump by the brushes, which are all the way at the back end, where the harness plugs in. That's the only thing hitting it does, lets the brushes move back into contact with the armature until they wear down more.

 

sub'd will check it out very very soon

 

I think its shot to but hey its worth the try and plus i don't have much to spend right now it sucks lol

 

damn mines out thank god for meth

 

it appeared mine was working, looked in when the car was running and it kinda looked like it was bubbling/brewin' haha but glad I found this, I was worried for a bit.

 

Ok so i just brought my car back to chevy because i thought my pump was blown and i still have my factory warranty blah blah blah, long story short, the guy just told me that everything checks out fine. yet i have low coolant in the resivar with little to no flow, i can not hear the pump turn on when the key is put to the "on". and my car feels sluggish....hmmm

 

Would are cars pull a code if it was broke jw

 

nope, mind didn't

 

So I went to the dealer and they told me are cars don't have if pumps their air to air dumb lazy dealers

 

wow that is just bad!!!

 

the answer is there pumps die too, its a common problem.
the brushes in the motor ware out(just like all electric motors) i do believe the brush they used in this particular motor were too soft for the application. iv noticed in applications were the pump runs non stop there is failure around 60-80 thousand miles. In most vw/Audi/merc and so on apps the pump is used as a secondary pump.the pump and cycled on and so they tend to last longer.

the interment problem is due to carbon dust (from the brush) caking up inside the motor, the dust prevents the brushes from sliding in their guide and thus prevents them from making contact with the commutator , when you hit the motor you jar the brushes back into place,but once the brushes ware you loose contact again.
best thing to do is to take the motor apart and clean it if the brushes are still good. but its not a novice task.
heres my write up...
https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/look-intercooler-pump-lots-pics-199169/

 

How much do the dealers want for a new pump? ottp wants 100 bucks

 

I checked mine, it doesn't seem to be doing anything. The engine hasn't blown up yet. I don't have IAT guages anyway so I suppose I won't know if its about to melt down.

I wonder if its ever worked, I've always thought the motor was sluggish. My fastest 1/4 mile was 14.59 @ 99.453

I'll hit it with hammer tomorrow when its daylight and if that works I'll order a new one Monday.

So when does this become a recall too?

 

mine doesnt really seem to do anything either. im in the exact boat as you and have 80 k miles

 

Can these pumps be bought at auto zone or Napa?

 

I went to the dealer today and this is covered under my powertrain as long its the pump that is bad. My supercharger is running super hot my fluid identified flowing is that general problems but I guess is a 500 dollar part dam they rape us coming and going