C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

air pump not turning?

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Old Dec 3, 2008 | 06:15 PM
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Default air pump not turning?

i tried to start the car after putting in a ported plenum and tb

when the parts where out, i simple greened the engine bay.

water was everywhere, but i wiped everything down as best as i could.

fast forward, 1 and a half weeks later, the parts are back and the engine starts.

smoke and squeal is coming from the belt area, and the engine stumbles,

i feel the pulley's and the air pump has a hot one,

my guess is it is siezed,

is it repairable?

serpentine removal:::::::

my breaker bar is too long and hits the ac line on top i try to reposition it now it's parallel to the cross memeber, with no room to release the belt, any suggestions?

my half inch rachet won't fit between the crossmember the tensioner, now what?

Last edited by slickfx3; Dec 3, 2008 at 06:22 PM.
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Old Dec 3, 2008 | 09:14 PM
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Sounds like your air pump is seized. You can get rebuilt ones fairly cheap from most auto part stores.
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Old Dec 4, 2008 | 01:56 PM
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yes you are right, didn't take much corrosion ( i took it apart) to seize it,

just little water and a little time for it to do it's number, i guess if i were able to drive the car sooner the heat in and around that part would have cooked the water out, no matter

the bearing grease on that thing was dried out anyways, just a matter of time.
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Old Dec 5, 2008 | 11:19 AM
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Slick,
My air pump is making noise, probably needs a greasing or something. In taking it apart, did you notice if the unit is sealed or, can it be easily greased?
Thanks!
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Old Dec 5, 2008 | 01:39 PM
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not sealed, needle bearings, you may want to clean clean the insides too, it is all exposed, 49.99 at autozone i don't know if it's worth to chance itwith all that labor
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Old Jun 26, 2009 | 04:10 AM
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Yup, the same thing happened to me after I washed the engine. Everywhere I read, it said about covering or removing the alternator, battery, and cap/rotor. But nothing about the smog pump. I'll be getting me one from Autozone. I have the radiator drained. When I was checking the other pulleys. I noticed when turning the water pump pulley, that it will make a squeel sound that goes away when I turn the pulley really fast. I was thinking that may be because the radiator is drained, but maybe the pump is going out?
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Old Jun 26, 2009 | 09:00 AM
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anyone consider just taking out and putting in a bypass? I know lots of guys have, but I am not sure what the benefit/drawbacks are to removing it. I havent done much of anything on my new 86 yet, but I think I want to get rid of as much of that smog control stuff as possible. There is no requirement for emission on 25 yo cars here in CT, so that wont be an issue the next time it comes due.
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Old Jun 26, 2009 | 09:09 AM
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During my top end L98 build that I just finished up the exact thing happened to me. I had removed the air pump and cleaned the heck out of it and everything else. the pump had seized while sitting on the bench and before install I pulled it apart to grease it up but it never got real loose.

I finally went and order an AutoZone replacement giing them my core which I cleaned and repainted. WARNING, the Autozone one they have had different threads for the two bolts on the back that hold the bracket to the manifold and the other bracket!!!!!! Maybe fits an F-body.

So back to Autozone 2 days later they still had my core, I took it back greased it a bit more and slapped it on, at least the threads were correct! It's running fine but would not surprise me if it didn't last long. It seems like the smallest amount of water will cause them to seize.
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Old Jun 26, 2009 | 09:12 AM
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Originally Posted by Dolfan
During my top end L98 build that I just finished up the exact thing happened to me. I had removed the air pump and cleaned the heck out of it and everything else. the pump had seized while sitting on the bench and before install I pulled it apart to grease it up but it never got real loose.

I finally went and order an AutoZone replacement giing them my core which I cleaned and repainted. WARNING, the Autozone one they have had different threads for the two bolts on the back that hold the bracket to the manifold and the other bracket!!!!!! Maybe fits an F-body.

So back to Autozone 2 days later they still had my core, I took it back greased it a bit more and slapped it on, at least the threads were correct! It's running fine but would not surprise me if it didn't last long. It seems like the smallest amount of water will cause them to seize.
nice to know: I am planning on getting under the hood tomorrow to clean up the big oil mess from when my dipstick spit out and shot a quart all over everything. Planning on Seafoaming it first, then hitting the whole engine bay with Simple Green and a case of paper towels!
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Old Jun 26, 2009 | 10:40 AM
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That Pump is ~$50 from Kragen. It is easier to replace than it is to rebuild. Just one thing, paint the Steel part of the housing prior to installing, it rust quickly.

There is a youtube on taking the Serpentine belt loose on an l98
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Old Jul 22, 2009 | 02:19 AM
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Originally Posted by Dolfan
During my top end L98 build that I just finished up the exact thing happened to me. I had removed the air pump and cleaned the heck out of it and everything else. the pump had seized while sitting on the bench and before install I pulled it apart to grease it up but it never got real loose.

I finally went and order an AutoZone replacement giing them my core which I cleaned and repainted. WARNING, the Autozone one they have had different threads for the two bolts on the back that hold the bracket to the manifold and the other bracket!!!!!! Maybe fits an F-body.

So back to Autozone 2 days later they still had my core, I took it back greased it a bit more and slapped it on, at least the threads were correct! It's running fine but would not surprise me if it didn't last long. It seems like the smallest amount of water will cause them to seize.
Did you try ordering another one? I'll be looking at getting a pump soon. Mine is no good as it is all rusted inside. Spinning it I can see it scraping. I have it unbolted, but for some reason, it won't come apart.

It looks like every parts store carries the same brand, Cardone.
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Old Jul 22, 2009 | 09:56 AM
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sucks !
when i did my rebuild my alternator seized !
i got a 105 amp brand new chrome replacement
and i rebuilt the old one just in case !

Delete that pump !
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Old Jul 22, 2009 | 10:43 AM
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Remember, if your area has smog checks, once that pump is gone, you won't get passed.
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Old Jul 23, 2009 | 02:55 AM
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I want to keep it stock. I plan on selling it in a year or so to get a truck. So, I don't want a potential buyer to pass cause they think I'm a "bubba".

Though, I say if the Cardone pump from Autozone isn't threaded for the stock bolts, then I say I may could just put the guts of the new one into the old casing.

But, I'd need to figure out how to get the casing apart as I've got all the bolts apart. It just doesn't want to seperate.
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Old Jul 23, 2009 | 08:33 AM
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sounds like it's time to hit it with a big hammer; it may be siezed along the joint. Spray it up with penetrating oil and give it a whack.
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Old Jul 23, 2009 | 09:02 AM
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Default Air pump

My 1987 did this exact same thing...I just ordered a SMOG Pump eliminator and was done with it. I had also done an underdrive pulley swap at this time, and after all was said and done, it felt like the engine responded quicker. I'm not sure which one of the two made the biggest difference. Maybe the both combined...not sure.
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Old Jul 24, 2009 | 01:54 PM
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Originally Posted by flynn508
sounds like it's time to hit it with a big hammer; it may be siezed along the joint. Spray it up with penetrating oil and give it a whack.
The OP isn't here. He was sent to Camp.
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To air pump not turning?

Old Jul 25, 2009 | 01:10 AM
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I got mine apart and lubed up the bearing things.

It turns fine, but I can feel it hang up some. Is it supposed to do that? I guess I could stop by Autozone and see if theirs hangs up any.
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Old Jul 25, 2009 | 01:36 AM
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i don't think so,i guess it have to spin freely
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Old Jul 27, 2009 | 02:26 PM
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Originally Posted by Calderone
i don't think so,i guess it have to spin freely
Do you have yours out to see how it spins? Mine spins, though I guess it doesn't really hang up like something is hitting. While spinning, there is one point in the rotation where I can feel a little resistance. Kinda like it barely sticks at one point. It's not real bad.

Though, I do know there are little plates that slide in and out while it spins, so it could be normal. I wish Autozone had one in stock I could compare to.
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