3800 Supercharger problem?

[Adam86]

Today I went over by J.E.T.'s place to gut out my cat. Well we gutted out the cat and got that done, and then hoooked up the autotap to see why i was getting mis-fires. it turns out that i was mis-firing in cylinder 6, so we replaced the spark plug wire and mis-fires went away. now my problem is that whenever i get on the gas enough for the supercharger to give the engine boost, there is a metallic clanking/helicopter (yes the helicopter noise again lol) noise audible coming from the supercharger. we checked the supercharger oil, and there was barley any in it, so we added what was left of a bottle that J.E.T. had. the supercharger is still making the noise, however. is something in my SC fried, or what should i do to fix my problem? thanks!

--Adam

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[sweetness]

Sounds like you have a misfire again. At least that is what the "helicopter" sound is. Did you check to see if you were misfiring again?

BC

you still planning on coming by my place tomorrow? If you are we can try and hunt it down, if not, dont' sweat it, ill sleep.

 

[Adam86]

we checked with the autotap and there were less than 8 counts of missfire for the 6th cylinder. now it's just that metallic sound. sweetness i wont be able to make it today, i got a job at the chicago auto show that just came up last night when i was at J.E.T.'s place. we can definatly do another time during the week if your avaiable, however!

Thanks

--Adam

 

[sweetness]

whenever. Just let me know if you need any help.

BC

 

[blueGTP4me]

Dont know to much but I pretty sure there is a bearing in there. My be going bad.

 

[imported_snoop]

coupler inside the snout

 

[alexgtp]

Well first thing you need to do is disconnect the SC belt. Drive around town and see if the noise goes away . If it does than you know it is the SC causing the sounds.


Remove the SC SNout.
Like SNoop said inspect the coupler. And check the SC blades for any sign of damage also you can check the bearings.

 

[gtphale]

Sounds like your wrecked the bearing in the SC. Willmost likely have to be replaced

 

[Adam86]

the bearing will have to be replaced or the whole supercharger?

 

[Fish]

I think its the whole supercharger. StarrGTP had a bearing go bad in his car and had the whole thing replaced under warranty.

 

[alexgtp]

Well they calimed thet the snout is not re-buildable. But someone on club-gp said he rebuilt it and has all the part numbers needed and a how to. DO a search..

"EATON SC rebuild " or something like that.

Well worst case.. Just buy a MAGNUSON snout..

 

[J.E.T.]

Can the rotors go bad and make horid noises? Has anyone ever hear of a case as such? I know the rotors teflon can peel, but is there anything else that can go wrong? Doesnt seem so... but my sc is also making a noise similar (no where near as loud though) to Adams. But the noise only comes on after 2K RPM.

Back to Adams problem:
At idle, there is no noise. If it was the coupler or bearing, it would make a grinding noise all the time at all RPMS, right?

We should have taken the belt off. It was getting really late though... Next time!


I'm having an expert GM tech look at mine over the weekend B) .

J.E.T.
'97 Red GTP

 

[CoolGTX]

zooomer sells rebuilt snouts.. h34r:

 

[GTP]

Hey guys, im new to this forum...it looks like i have the same problem...the engine stutters kinda like a "helicopter" after i accelerate hard or give it some boost...this happened after the spark plugs have been replaced...but before i replaced the plugs, it made a similar noise, but it wasnt a fast stuttering/helicopter noise...it bogged after i accelerated hard, but it wasnt like the fast engine stutter/bog or helicopter noise im getting now with my new plugs when i accelerate hard...weird...but i do not hear any metallic clanking/sound at all, just bogging, but really fast...and this only happens after about 3k+ rpms, basically when i accelerate hard to get boost...the car runs smooth and all below 3k rpms and idles very smoothly... the problem kicks in right when i accelerate hard, doesnt matter how fast or slow im going...the fuel filter, belts, and supercharger oil have also been replaced at the same time my spark plugs were replaced...I did not get the spark plug wires replaced...I think that this is my problem, since i had'nt replaced my spark plug wires ever since i got my car...it sucks cause everytime i give my car boost, i end up getting almost no boost ... it might be my pcm, but i dont know... sounds like im getting mis-fires...but the problem for mis-fires may be solved just by replacing my spark plug wires, just as Adam86 did...but i dont know...if anyone could help me out on this problem, i'd really appreciate it

a little bit about my car:
98' GTP, 3.4", magn. snout, CAI, borla exhaust

 

[alexgtp]

I thnk you might have a different problem.

Sounds like massive misfires above 3000.
Did you have the car scanned?
Did a shop replace your plugs?
Have someone scan the vechicle..to check for massive misfires. than you can go from there..

 

[LP 3800]

Just a possibilty:
if it is not from the SC, I was getting that noise everytime I hit the gas and boosted. It urned out to be misfiring from a cracked head. :huh: Sorry to be the guy who scares everyone, just a thought

 

[GTP]

no i didnt have the car scanned...yea a shop right by me replaced the plugs...
where can i go to scan my vehicle?? can anyone from this forum help me in scanning my car? thanks

 

[alexgtp]

Yeah dude.
ALot of ppl on here have scanners.
Just post your addy and maybe someone near by can help.
I would offer but my autotap is not working..

 

[GTP]

yea i live in Lincolnwood, which is near skokie/morton grove/niles... i would greatly appreciate it if ne one near me can help me out and scan my car to see what the problem is.. thanks

 

[alexgtp]

Oh wow. I am like 10 minutes from you.

I am over on wilson and damen for work.

LEt me see if I can get a scanner. I have some serious SES lights on right now also..

 

[GTP]

does it matter if i do not get any SES lights showing up?? because they are not showing up on my car..is that supposed to happen with the problem im having?? thanks...

 

[GTP]

my AIM screename is : snowclawz ... if anyone could help me out you can contact me that way .. thanks