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l67 issues

 
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tonglebeak
Cadet
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Joined: Mar 22, 2011
Posts: 54
Posts per day: 0.02
Location: Hagerstown, MD

2004 Chevrolet Impala


PostPosted: Thu Nov 24, 2011 8:48 pm    Post subject:  l67 issues Reply with quote

04 indy. Boost looks fine, oil pressure looks fine, temp is in range, smooth tranny shifting, and no codes.

After about hour 5 of a 6 hour, I felt like I ran over something, but I just kept chugging along as I saw nothing in the rear view. I then started to notice a grumble, which is only noticeable above speeds of 20mph+, and goes away if the throttle is applied (but then it comes back). Also, whenever I let off the throttle, I hear what sounds like air rushing from somewhere (can hear this while stopped and my ear against the belt system).

Driveability is fine for now, but I don't want this snowballling. It's too dark to diagnose any further, but for when daylight comes out, I'd like a pretty good idea as to where to go. I was thinking maybe a pulley bearing based on where I could hear the sound coming from, but who knows.

Thanks.
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2001Ls
Resident
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Joined: Jun 26, 2009
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Location: New Jersey New Milford

2001 Chevrolet Impala


PostPosted: Fri Nov 25, 2011 12:21 am    Post subject:   Reply with quote

No idea but I feel your pain. Take it to a mechanic maybe.

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2001 Impala LS 81k as of Nov,2011
3.8 V6 3800 Series 2
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tonglebeak
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Joined: Mar 22, 2011
Posts: 54
Posts per day: 0.02
Location: Hagerstown, MD

2004 Chevrolet Impala


PostPosted: Fri Nov 25, 2011 9:51 pm    Post subject:   Reply with quote

Decided to look more. Coolant reservoir and inside of rad appear to be caked in oily sludge. No coolant is appearing in the oil though. LIM gasket? I'd rather this would've happened when I'm not 300 miles from home, damn. If it's the LIM gasket, what are the correct part numbers for the aluminum ones if they still exist?
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