help! strange noise from bonnie and power loss - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-01-2006, 12:49 AM   #1
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Default help! strange noise from bonnie and power loss

Strange noise today its like a squeaking noise coming from the front end, not just squeaking but like when something hits another object in rotation. Its too dark out and just heard it, it even stalled while going into my driveway. In traffic lights my light would dim for like a second like it was struggling.

whats going on??
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Old 03-01-2006, 12:54 AM   #2
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thats pretty vague...

got one of these???

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Old 03-01-2006, 12:59 AM   #3
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yea, i do I dont think its the belt. I dont know how to better explain it sorry.
and **** I had my lower intake gasket replaced yesterday I hope its not coolant mixed with oil.. and oil level seems low when I just checked it. omg im pissed
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Old 03-01-2006, 01:00 AM   #4
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only under throttle? only in gear? more details needed
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Old 03-01-2006, 01:03 AM   #5
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idle and gets louder with throttle, coming in park/netural/drive (not the tranny)
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Old 03-01-2006, 05:55 AM   #6
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does your temp gage rise?...when my Lumina'* uim failed it would get rough during idle and the temp gage would rise really fast....but it would smooth out when given gas..it actually ran like this for a few months before it died completely..it was a 3.4 though..not sure how a 3800 would react...
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Old 03-01-2006, 06:03 AM   #7
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Hmmm....squeaking, but like something hitting in rotation at idle. Not coming from the belt. Maybe an alternator bearing going out? - That might explain the stall and the dimming too. But you should be able to hear it pretty clearly at the alternator if it is.

An exhaust leak between the manifold and cylinder head can make a squeaking, ticking kind of noise.

To see if the noise is coming from something driven by the belt, remove the belt and start the engine. Don't run it for more than 30 seconds or so - you will have no alternator and no water pump.

Belts squeal when they slip. And when they slip they become glazed, and sometimes leave crumbs of rubber near the pulley they are slipping on. Sometimes a new tensioner is needed, other times a driven appliance is turning too hard because of a bad bearing or damaged internal parts.

Take a good look and listen in the daylight.
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Old 03-01-2006, 05:41 PM   #8
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guys.. the engine is toast.
I just got the bad news from my dad, I'm at work now and pretty bummed out about this. Some guy quoted him for $1500 for an engine with 70,000 with the install.
Is that a good price? If i want the l67 I gotta buy the tranny to right?

the sound got louder as the day went on he said and its sitting in the street now. I didnt have time to start it to see how bad it was.
sucky week..
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Old 03-01-2006, 05:47 PM   #9
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did you do the intake yourself or did a shop do it?? could it be related by coolant being in the oil?
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Old 03-01-2006, 05:51 PM   #10
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the guy at the shop did it, and thats what I was thinking about too. Oil isnt supposed to be sticky is it? he supposedly changed the oil after everything was done but who knows what happened.
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