My UIM LIM replacement(UPDATE__ ITS ALIVE) - Page 2 - 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.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-03-2007, 04:25 AM   #11
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2003
Location: Hobart, Indiana
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
bobfather99 is on a distinguished road
Default

Update....

Got the stud drilled out no problem.
APN manifold went in great. Just need to put the belt and the exhaust crossover back on, then Ill fire it up.

I used some silicon to seal up the water jacket under the TB, should be ok.
Replaced a few vacuum lines here and there, old ones were ash....

I have to admit Im a little nervous, hope I didnt do anything wrong...
Ill find out tomorrow!!

Bob
bobfather99 is offline   Reply With Quote
Old 05-03-2007, 05:31 PM   #12
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2003
Location: Hobart, Indiana
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
bobfather99 is on a distinguished road
Default

As the title says, its running great!!!!!!!!!!!!!

Only have a minor vacuum problem, with the small line (7/32")fom the manifold to the "accessory" port on the firewall.

I replaced the tubing with a fresh one, and now I can hear a "hissing" sound that goes away when I squeeze it. I also have air coming out of the bottom vents only, no dash vents/defrost, which I assume is vacuum controlled..

Anyone have any ideas as to what I need to do next?? The tubing is new, but somewhat "spongier" than the old one which seems stiffer/stronger..

THANKS A MILLION for the Tech info section, it is truly a "Bible"
bobfather99 is offline   Reply With Quote
Old 05-03-2007, 05:47 PM   #13
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

That little line feeds a vacuum reservoir on the firewall that supplies vacuum for the vacuum "motors" or diaphragm valves that open and close several ducts in the air handling system. Sounds like you have a hose disconnected, or a damaged reservoir, or tee fitting. I believe you have described the "default" vent setting when vacuum is lost. There are some great articles on how these work and how to fix them. Here is one: http://www.bonnevilleclub.com/forum/...ic.php?t=75593

Could you have inadvertently disconnected a line to the reservoir? On my '95 there are two lines that connect in a modified tee fitting which then connects into the reservoir. One is a rubber line from the UIM (the vacuum source) and the other is a nylon line to the cruise control servo. And, there is the line from the reservoir that feeds the vent motors. Maybe that got knocked off when you undid the vacuum feed line to the UIM?

Here is a photo from the above thread (engine removed for clarity ) Name:  MidRbay.jpg
Views: 1
Size:  78.0 KB
bill buttermore is offline   Reply With Quote
Old 05-03-2007, 09:14 PM   #14
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2003
Location: Hobart, Indiana
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
bobfather99 is on a distinguished road
Default

Wow!!!

Bill you really are a John Henry!!!

Doing all that work just to help me out!!!!

Turns out I pulled the vacuum line from the firewall. Found it in about 5 minutes..

You can put that engine back in now!!!

Thanks for the guidance..... **salute**

So far so good....No knocking from the bearings!!!!!!!!!
bobfather99 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
UIM & LIM replacement schnutzy 1992-1999 14 02-03-2011 10:26 PM
UIM and LIM replaced now leaking coolant out of UIM gasket Paul1981 2000-2005 10 12-21-2007 11:05 PM
My UIM/(porting)LIM replacement thread 56k beware putertopia General GM Chat 34 12-18-2007 04:46 PM
Cost of UIM/LIM replacement... zuper8 General GM Chat 25 02-23-2007 10:53 AM
Sealant question for UIM/LIM replacement? histriumph 2000-2005 0 01-17-2007 12:39 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:28 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.