knocked solved... now its sluggish!!!!
 

just noticed this today... i have a LOUD knock coming from the engine... so loud i can't really pick out where it is coming from! none of the pulleys look like their wobbling, but i probably couldn't tell if they where. I did check all fluids and i notice the the PS fluid was pretty low. so i topped it off and the noise is still there... any ideas? my dad is on his way out with the truck for me to borrow till i get it fixed at least.

Oil pressure? What is it?

while driving its at 40, accel, above 40, idle, just under 40.


OH, forgot to mention this. its important too, just had too much in my head.

it only makes noise at about 1000 RPM or LESS!!! (idle speeds) odd...

I may be wrong but this sounds like it could be the harmonic balancer. One of the resident gearheads should be able to confirm this for sure.

that was one of my thoughts. I've heard of it happening but never heard what it sounds like...

well my dad agrees with me that it might be the PS pump. it seems to become more "intense" when I turn the wheel. i'll know tomorrow, its at the mechanic again...

When you turn the wheel, the PS pump is put under load. So the belt is harder to pull around its pulley. The belt is pulled by the crank pulley, or harmonic balancer. So, if the HB is failing -coming apart - applying an additional load at a low speed can be expected to make it worse.

PS pumps mostly whine when they go out or sometimes make a grinding noise. Not saying they can't make a knocking sound, but that would not be the most likely probability.

Darrel, grab ahold of you belt and see if you can move it by hand. If you can, then the rubber in the harmonic balancer has seperated an is making your knocking noise

well, that was it. the harmonic baleancer was shot. BUT, sence the visit to midland it has started leaking coolent even worse and a ball joint is popping when i turn now... anyhow, the mechinac is working on it as we speak and i'm having everything done. ought to be an alright car when i'm done... ;)

Hey Darrel..... your harmonic balancer is bad :lol:

yeah.... :roll:

did we mention something about that last weekend?

I don't know, it was all kind of a blur :lol:

i know what you mean.


got it back just now. seems to sound smoother too now :D

a little bummed that it got filled back up with Dex again though... i almost had leaked out all the dex and replaced it with the "anything" coolant! :lol: oh well, if i get the ambition this summer i'll take care of that.

Just ask Al Roker. He will remember ;)

:lol: did you guys like that game :P

Yeah. It all started to become a big slurring game after about the 12th bear though :beerchug:

to bad Al Roker won't pay to have my car fixed... that $1085 hurt a lil... glad to have it back in my parking lot though.

OUCH :shock:

What all did they fix????

That sounds about right if they did the harmonic balancer, ball joint, and LIM gaskets.

harmonic balancer, LIM gasket, Ball joint, belts. including that they charge for fluid replacement too...

from what i've seen it really isn't a bad price for the work that went into it. and it was all done in 6 hours (thats the sick part!!!)

and yes, i actually went home and popped the hood to see if they ACTUALLY worked on everything. 6 hours is impressive to me.

6 hours is haulin azz!!! :slomo:

got it back yesterday and while on my way to class today it seems really sluggish... almost like something is holding it back untill i REALLY get into the boost. at a cruise it seems to run with the gauge at 0 psi... i thought it used to sit at about -5 psi.... anyhow, is there like a breakin period that i should know wabout for this?

There is no "break in" for the LIM gaskets. I hope the tech didn't rush it too much and forget to hook something back up :shock:

thats what i thought happened. i took it back and they hunted through it for about an hour and a half. they saw no problem with the work they did (cause it really could cause that problem) but they did find a bad EGR. it was throwing 3 or so codes when they hooked up the scaner. so, getting that replaced now too.

oh, interisting info i got from them too. when they replaced the LIM gasket they just unbolted the intake and lifted everything. they didn't have to unhook much at all they said. i guess thats good though, they stayed out as much as possible.

Ditto, the soud of a dying PS pump is a high pitched whine...kinda like what you hear if you run the steering all the way against the stops and hold it there. (That's actually the sound of the pump cavitating, but it also sounds that way when the bearings die)

[quote="Darrel"]Yeah, you can get away with that on the Series I S/C manifold.. SInce all of the intake manifolds bolts are exposed (Series II motors have one bolt hiding under the blower). Downside to doing it this way is it's an awfully heavy assembly to manuever around and set back down on the new gaskets. You can shift a gasket and not be able to see it of you are not gentle when setting the assembly back on.

well got the EGR replaced and drove it up north to visit with Sara again. it was still acting funny on the way up. the boost gauge was sitting at about 0 (straight up) while crusing at about 78 when it used to sit at about -7 or so... got 18 MPG straight highway too!!! when excellerating normally it seemed very sluggish too. that was all on the way up there... on the way back it started to cruise normal and the acceleration seems to be back to normal (never was great).


so, is it possible that the computer had to relearn some stuff with the new EGR and that after a few hundred miles i'm fine? :?:

It sounds like they hooked some vacuum lines up wrong, and the wastegate is stuck open. Can you snap us a pic of the vacuum hoses?

i'll snap a pic when i get home today...

i mentioned that first thing myself too but when i asked about it they said they never unhooked them... either way i had them go over the lines again and they did replace a cracked line. also, the accuator (however you spell that!) moves still, but there is a leak where the rod that it twists goes into the side of the SC. i'll get a pic of what i'm talking about later on as well.

sorry that i never go the pic up... School and work have been kiilling me.

anyhow, i got her back from the mechanic yesterday and everything seems to be tip top this time. what ended up being the problem was a damaged wire going to the knock sensor. apparently when they unhooked the wires to get a the LIM gasket they mush have pulled it or let it touch something too hot when they put it back together. either way, it was free becuase it may have been cause by their work. just wanted to throw this out here and keep it up to date. its nice to have the bonneville back in working order again :twisted:

Good to see it back now 8)