UIM Project questions *** UPDATED WITH PICS *** - 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 02-03-2006, 04:07 PM   #1
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Default UIM Project questions *** UPDATED WITH PICS ***

Hi all,

I recently noticed my coolant level going down on my 1995 Bonneville SLE 133k miles at a pretty good rate. About 1/2 a liter ( the amount in a small Poland Springs Water bottle) every 600 miles. I can see coolant in the little nooks and crannies around the UIM. So I've decided to replace the UIM and the LIM gasket at the same time. My brother, the wonder mechanic, is going to do the work and I'm going to help. I want to confirm what parts I need. I've done a search on this forum and I think I have everything, but I just wanted to confirm before I order the parts. I guess I just need a little hand holding. The parts I need are as follows:

1) Upper Intake Manifold. I'm probalbly going to order a GM UIM and I believe it comes with the appropriate gaskets. Can someone confirm this?

2) Lower Intake Manifold Gaskets.

3) Coolant Elbow ( Is this necessary?)

Is this everything?

I'm thinking of ordering the UIM from this EBay link. Can someone take a look and see if this looks okay? I'd really appreciate it.

http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT

Thanks,
LeifW
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Old 02-03-2006, 04:18 PM   #2
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Can't thibk of the name, but we have a member who sell reinforced UIMs.
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Old 02-03-2006, 04:19 PM   #3
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Quote:
Originally Posted by MOS95B
Can't thibk of the name, but we have a member who sell reinforced UIMs.
Bob Dillion. I have one on my 99. Last I read, he was selling the reinforced one for $35 + core. I'm sure he'll chime in here.
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Old 02-03-2006, 04:20 PM   #4
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Yep, got one in stock. Ask for links to my repair or search here.
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Old 02-03-2006, 04:36 PM   #5
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There he is!!

This should save you some money.
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Old 02-03-2006, 04:59 PM   #6
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If at all possible, get the newer, all metal LIM gaskets. You MAY not need the coolant elbow, but it seems they are fragile and most people end up breaking them on removal of the LIM. It'* a cheap enough insurance part that you could probably return if not used.

Many recommend you get new injector O-Rings and replace them at the same time.
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Old 02-03-2006, 06:30 PM   #7
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Recent thread on this exact thing
http://www.bonnevilleclub.com/forum/...ic.php?t=47455
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Old 02-04-2006, 08:45 PM   #8
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I also have two additional question. Are the Dorman and Motormite UIM from the same manufacturer? Also are these okay to use?

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Old 02-05-2006, 01:06 AM   #9
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Dorman is an excellent piece, Motormite is inferior.
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Old 02-05-2006, 12:33 PM   #10
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As said, the Dorman gets high marks from those who have used it. Don't fail to consider Bob Dillon'* remanned UIMs. He does good work and so far everyone who has used one has been satisfied. Plus you can't beat the price: $35.
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