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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 06-27-2006, 07:40 PM   #11
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Yea you are exactly right, the engine is definitely hydro locked.

This is expected to an extent. The original engine was driven for nearly nine years before it was replaced.
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Old 06-27-2006, 07:46 PM   #12
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I think the engine is definetely still driveable, that is if you got the oil out of there and put some fresh oil in in enough time, otherwise it might be toast.

The intake replacement isnt horribly complex, my dad did most of mine using a print out from this very site, and hes no mechanic, neither am I and I have full confidence I could have done it as well.

With the right guidance, some common sense, and a decent set of tools you will surprise yourself with what you can do.

When I bought my Bonneville 3 yrs ago, I didnt know a darn thing about cars, and I thought changing the oil was about the best I could do with it.

Since then, Ive replaced upper and lower gaskets as well as the upper intake on my Bonneville, installed larger rotors on my Intrigue, and just installed a GMPP handling kit...things that if you asked me 3 yrs ago if i could do i wouldve said no way!! oh and i just put in a new master cylinder a couple days ago as well.
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Old 06-27-2006, 07:47 PM   #13
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Quote:
Originally Posted by snaz
Yea you are exactly right, the engine is definitely hydro locked.

This is expected to an extent. The original engine was driven for nearly nine years before it was replaced.
The intake plenum on this car is a good design as far as flow is concerned, but a huge mistake in that GM made it a Composite....

almost 1 year ago I replaced my lower intake gaskets and upper intake to avoid these issues happening again... I was on my 6th year with the intake that was replaced in 99, I decided to bite the bullet and replace it again... It been 1 year with no coolant loss or intake issues...
I think the Parts totalled $200, and being the type of guy I am I did the work myself... Too bad I couldn't pay myself $700 for the Labor

Wish I could help you guy

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Old 06-28-2006, 12:50 AM   #14
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Quote:
Originally Posted by snaz
Its a 1995 SLE. As a matter of fact, its already on its second engine. We had a head gasket go on the original engine and had to replace it.
If true, it is my understanding that yours would be the only known case of anyone on this club, of having a head gasket go on their 3800. I think it is much more likely that your first engine experienced the same intake failure that you have now, that so many many many of us have experienced. (Twice for me, inside 85,000 miles.)
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Old 06-28-2006, 08:20 AM   #15
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Quote:
Originally Posted by snaz
Yea you are exactly right, the engine is definitely hydro locked.

This is expected to an extent. The original engine was driven for nearly nine years before it was replaced.
I can see the view of your mechanic worrying about the engine being hydrolocked...however I can also see him being too conservative in his diagnosis.

This sounds about the same as changing the motor because it is greasy on the outside. A little work and it would be just fine.
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Old 06-28-2006, 03:46 PM   #16
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Quote:
Originally Posted by snaz
So I just got a call from the mechanic that'* working on my Bonny and of course the news was BAD. Long story short, its engine swap time. There was anti freeze in every cylinder and it would too much of a risk to replace the entire intake. So right now we're in the process of finding a engine thats going to in the bonny.

This is prolly the last of this car. I'm goin strip it back to stock (rims and system are comin off) after the new engine is in there and shes gonna be put up for sale. This is the second swap I've had to do and frankly its not worth the money I'm spending. In fact, I regret not selling it after the first swap. Its a sad time
get a new mechanic.

you've got a blown upper intake, as noted above. it'* not a hard fix, and as long as you get the oil out of your engine ASAP, it'll live, and live all strong-like. there'* no risk in trying to fix the upper intake... especially if you're planning on trashing the motor anyway. if you have no mechanical experience, set aside 3 days, and you'll be back together in no time
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