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.

Somebody help me please?

Old 06-22-2006, 10:04 AM
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On how to know about a junkyard motor. Well...you really can't know everything. However a yard should have a warranty on the motor that it isn't bad. You'll see it quickly if it is.

They typically run the motors to see if they are good. Depending on why the car came in (say front end crash with no radiator) they won't run them too long w/o coolant..

I've had to pull a motor before because of DOA...but it'* not very common.
Old 06-22-2006, 11:44 AM
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Originally Posted by jr's3800
This is not an issue on the Firebirds as they have an all alluminum intake.... Totally diffrent set up...

This is a 3800 Series II L36 issue( FWD )... This runs from 95-05 depending on the model line....

I would be tempted to find a junk yard 3800 with low miles and have it installed with a new upper intake and new alluminum frame lower gaskets...
Besides getting the engine and those other two things you just said, what is the part that goes bad on these things called? Do I need to get something special so it doesn't happen again? You said something about someone making special ones? Or is it something I can buy a better made one fast locally?

I'm a girl and learning way more about this stuff than I care too, sorry for all the questions.
Old 06-22-2006, 12:17 PM
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Originally Posted by BillBoost37
JoJo... like mentioned..sorry we need to meet this way.

There are a couple options for the upper intake.
Bob Dillion is a member that is sleeving intakes and providing a better reinforcement and air gap than stock. Low cost as well.
Dorman makes a good new upper intake and is the replacement of choice. The kit comes with gaskets, pcv, throttle body gasket..it'* very complete.

The aluminum lower intake gaskets can be found at the pontiac dealership.

Does this Dorman have the part in it that was the problem with these cars? I don't know what the name of the main part is that goes bad. If I get that do I still need to get the intake Bob Dillon makes?

Once the engine goes in and we get all the right parts will this problem never happen again?

Again, sorry for all the stupid questions but I just kind of got thrown into this. I would much rather have come here to talk about how much I love my leather seats and the way the car drives.
Old 06-22-2006, 12:54 PM
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The item we are specifically talking about that fails is the upper intake manifold, it is sometimes referred to as a Plenum.

The Dorman intake comes with all the goodies to replace, however the Bob Dillion version has a sleeved section to protect better against the same issue happening again.
Old 06-22-2006, 01:24 PM
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Originally Posted by BillBoost37
The item we are specifically talking about that fails is the upper intake manifold, it is sometimes referred to as a Plenum.

The Dorman intake comes with all the goodies to replace, however the Bob Dillion version has a sleeved section to protect better against the same issue happening again.

Does Bob have a website or anything to see about getting one from him?

With the Dorman it can happen again?
Old 06-22-2006, 01:26 PM
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You can send him a PM. BD doesn't have a website, but he visits here often.
Old 06-23-2006, 07:20 AM
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Originally Posted by lash
I am not familiar enough with used engine costs, etc, so I'll let someone else answer that one.

As far as a new UIM, you can buy new replacement from Dorman, Kenco and then there'* this new supplier here:

APN Intake Fix Kit

Only one person here has tried this one and it sounds good, but we don't have the experience yet.

There is also a member here who reworks used intakes and creates what we believe to be the best long term replacement fix. His name is : Bob Dillon

The aluminum LIM gaskets are available from your GM dealer and are the best replacement item we know about.

Do a little bit of searching and reading, both in our TECHINFO section and in this board. You'll come up to speed pretty quickly and be knowledgable enough to instruct your mechanic, lol.
Hi again jojo,
I know that we have been throwing a lot of info at you and you are probably a bit sick about your car, but take a look at the links I provided in my post above. One is a new source we recently found that sells a replacement UIM/Plenum kit complete with the sleeve etc. in it. This is reasonably priced and fits the need for those who want something brand new or nothing at all.

Also there is a link to Bob Dillon'* profile. From there you can PM him and see if he has another rebuilt UIM available for sale. He is not a business per se and provides these for a low cost, as available, to BC members.

The links are the red underlined parts above.
Old 06-23-2006, 10:25 AM
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Do you think the apn is legit. I mean do you think it sounds like it would really do the job?

I would like to try it. Do you know who from here has used it and how long they have had it?
Old 06-23-2006, 10:43 AM
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It certainly seems to be a good and well thought out product. If I didn't know better, I'd say that whoever decided to make and market this has been reading this forum for a while and knows just what it takes to get the job done.

Read this thread

Apparently they've been out there since 2004. Their concept is spot on and their product appears to be designed and made correctly. All that being known, I would not hesitate to put one on my car.

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