Stalls when stopping and fluctuating idle - 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 12-26-2010, 01:23 PM   #11
Senior Member
Posts like a 4 Banger
Thread Starter
 
PaulDFixr's Avatar
 
Join Date: Sep 2005
Location: Budd Lake, NJ
Posts: 105
Thanks: 0
Thanked 0 Times in 0 Posts
PaulDFixr is on a distinguished road
Thumbs up Problem Solved!

Take a look at the picture I have attached; it will tell the entire story. That'* the HO2S.

Replaced with a 'used' but good, and the P0171 code went away, and SES light went out almost immediately.

I did take the step of replacing the plugs and the positive battery cables to starter (crank test showed 0.7 volt drop on original cable) and firewall. The firewall cable I did a 'special' mod, re-routing it over the engine between the alternator and LIM, and splicing the alternator lead into the center of the cable. I kind of wish the voltage regulators were 'adjustable', but I did buy the pigtail so I could eventually mod the regulator to take the input voltage from the firewall. With my new cable installation, I'm not sure that will help much, because there should be zero voltage difference between the Alt and the Batt and the firewall now.

It is worth noting that I replaced three of the plugs, and both battery cables (including Alternator Cable Mod) and it did not affect the Lean condition the HO2S was giving due to the broken welds on the sensor. But, it is all good, and I'm glad I did it.
Attached Thumbnails
Stalls when stopping and fluctuating idle-ho2s.jpg  
PaulDFixr is offline   Reply With Quote
Old 12-26-2010, 01:26 PM   #12
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Ya, that would do it. Good to hear you found it and fixed it.
Danthurs is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
fluctuating voltage, bang shifts and a puff of smoke. is it related? eltatertoto Buick 13 12-05-2013 07:19 AM
Fluctuating Idle vegeta6588 1992-1999 2 01-23-2011 03:25 PM
Too high and fluctuating idle on 93 SE mlflagg 1992-1999 9 08-16-2006 11:36 PM
93 SSE Stalling on Turns and Stopping BigGuy 1992-1999 10 10-07-2004 02:05 PM
Ignition/fuel problem (hard start/stalls/rough idle) 1992 trofeo 1992-1999 43 04-02-2004 05:24 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 06:04 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.