UIM replacement brand & how. - Page 3 - 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 05-12-2007, 04:06 PM   #21
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Sep 2005
Location: Dayton, OH
Posts: 600
Thanks: 0
Thanked 0 Times in 0 Posts
imidazol is on a distinguished road
Default

Quote:
Originally Posted by sandrock
Let me say something here in case you run into some problems on startup.

Burning coolant has in many cases on this forum taken out spark plugs and O2 sensors. You will want fresh plugs to start with. After the engine is assembled, take out the old plugs and throw them out. Leave the new plugs out and crank the car for several seconds (It would be wise to pull the ICM and injector harnesses to keep fuel and spark from happening). This will dry out your cylinders, and keep coolant vapors from ruining your new plugs. Install your plugs and try to start.

When it starts, you will probably smoke a little (oh, keep in mind I am going on the assumption that you had a hard fail) as the cat is buring off coolant. If you CEL comes on, assuming all the sensors are hooked up right, it will either be a misfire code or O2 code.

And even if you did so already, change the oil. Your motor will thank ya
I just found it wouldn't start. I did get some slight firing, like the old cars on a cold winter day when they flooded out.

I looked at a plug. Wet.

I started to put in the old plugs I had taken out when I put in the current iridium Delco plugs. But I'll take all the current wet plugs out and spin her a few times to do like you said...
I'll put in the old plugs. Run a while and then put in new plugs--hoping it will start with the old previous set of plugs..

When it failed it had just started running rough after about a 1/2 mile trip and turning a corner, probably taking in more coolant off the bottom of the plenum area. The CEL came on and it limped home about 1/2 miles. But it ran better on way home after CEL came on...

I found that 5 of the plugs were wet and oily black, probably the oiliness is coolant. #6 plug was black sooty.
imidazol is offline   Reply With Quote
Old 05-12-2007, 05:28 PM   #22
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Sep 2005
Location: Dayton, OH
Posts: 600
Thanks: 0
Thanked 0 Times in 0 Posts
imidazol is on a distinguished road
Default

Is there any way to clean the plugs? Chemicals? Air intake cleaner? Toothbrush? Brass brusH?

It runs like a champ. Smooth. No big cloud of water/coolant out the back so it must not have been ingesting too much that it didn't vaporize instead of pooling.

The check engine light is on but it'* not running in limp mode.
imidazol is offline   Reply With Quote
Old 05-12-2007, 06:46 PM   #23
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

In the old days, when we used to do things like cleap up the plugs, re-gap, and reuse, we'd clean them up with a little carb cleaner (intake will do fine) wire brush them and put 'em back in. They also sold a little machine to sand blast them clean.
Archon is offline   Reply With Quote
Old 05-13-2007, 09:09 AM   #24
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Sep 2005
Location: Dayton, OH
Posts: 600
Thanks: 0
Thanked 0 Times in 0 Posts
imidazol is on a distinguished road
Default what I learned,

The intake developed a faster leak quickly in the last couple of weeks. Maybe as the engine ran with higher pressure as the outside air warmed up. I had planned to do the replacement myself, but wasn't prepared; I was waiting for early summer.

The job requires little doing really hard things.. The injector removal was new to me. They do wiggle and loosen like someone posted. If you reuse old seals they'll slip back in easier. If you put on new seals, use motor oil on them and get them started and then apply your body weight downward on each one working from one end. They will sort of snap in. I did clean around the opening to prevent dirt from getting carried in on the seal.

I bought the Dorman plenun with the replacement smaller diameter tubes. The 800 tech help at Dorman that the customer service people can connect you to or have call you back is 110%. They explained everything about getting the replacement EGR tube to stick since I had a slightly oversized hole in the LIM. He went through a list of things to do right including being sure about the seals on the PCV, which I already knew about. He answered my questions about the lower intake seals. The plenum is guaranteed for life, grin. The company ranks up with the Delta faucets and original Rubbermaid company (Little Tykes and kitchen stuff) for quality of customer service through techs.

This job could have been done in one day if I had had any experience other than plugs on how the parts were put together on the motor. It is well designed as to how things are routed and fitted. Nothing was a real hindrance to the removal. other than the bracket that holds the far end of the throttle body. That rotates and is a slide on slot for the bottom screw holding it to the LIM.

Engine light went off after third restart on the motor. Yes, there is a God! Will need a new set of plugs if I don't try the cleaned up iridium $8 plugs again. Am running on earlier set of 101s. Changed oil after running for about 10 minutes total drive time.
imidazol is offline   Reply With Quote
Old 05-13-2007, 12:44 PM   #25
Senior Member
True Car Nut
 
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Thanks: 0
Thanked 0 Times in 0 Posts
sandrock is on a distinguished road
Default

Good job! Now with it running, if you don't have a scantool, I would take it in to Autozone or Advance and let them scan it for you. What you will be interested in the most will be your O2 sensor readings. I found mine had gone way south after my intake failed on a 96 I previously owned.
sandrock 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
&%(*#(#($&Y^&#&$*(%(^%)%^) willwren Lounge 24 10-11-2007 06:56 PM
$&)$&*)#&+()#%& )#@(%&#)%*(&+_ Maymybonnieliveforevr Lounge 6 05-02-2007 07:07 PM
mom & hailey, mom & kim, mom & kim & mom harofreak00 Lounge 6 04-09-2007 03:40 PM
Brand new UIM self destructs in less than a year. djm 1992-1999 9 05-17-2006 10:17 AM


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 02:05 AM.


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.