got some new codes...can you help? - Page 10 - 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 05-02-2008, 10:39 PM   #91
Senior Member
Posts like a Northstar
 
Join Date: Jul 2006
Location: Waukesha, Wisconsin
Posts: 547
Thanks: 0
Thanked 0 Times in 0 Posts
Blownville is on a distinguished road
Default

Excellent info guys we will work on checking the Weirdness.
Blownville is offline   Reply With Quote
Old 05-03-2008, 07:39 AM   #92
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

Here is another little-known factoid. The PCM has a table for injector pulsewidth vs. voltage. If the voltage is too low, the pw is going to be off-kilter.
sandrock is offline   Reply With Quote
Old 05-08-2008, 09:38 PM   #93
Senior Member
Posts like a Northstar
 
Join Date: Jul 2006
Location: Waukesha, Wisconsin
Posts: 547
Thanks: 0
Thanked 0 Times in 0 Posts
Blownville is on a distinguished road
Default

Ok here is the list of numbers and I went all around under the hood with a can of carb cleaner and found no leaks. I did find that the O2 held on rich when held at 3000rpm. The last time I scanned it it would hold lean when you bliped it to the floor. It also has a exhaust leak and pops when it decelerates after a rev and I am not sure where the leak is. The voltages as far as the scanner goes stayed at right around 13.0. There are no more codes either. Let me know what you think, and thanks again.

Idle

LT Fuel Trim - 131
LT CL - 16
ST Fuel Trim - 128
MAF - 1300-1450
O2S - 600-650
O2 Crosscnts 48-52
20 degrees of timing
TPS - .035

Holding at 3000RPM

LT Fuel Trim - 110
LT CL - 13
ST Fuel Trim - 92
MAF - 7000-7300
O2S - 879-884
O2 Crosscnts - 0
31 degrees of timing


TPS fully opened 4.10
Blownville is offline   Reply With Quote
Old 05-09-2008, 09:54 PM   #94
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2007
Location: waukesha, WI
Posts: 112
Thanks: 0
Thanked 0 Times in 0 Posts
Triple X is on a distinguished road
Default

hay guys check the post above if you may have an idea on how to help out...thanks
Triple X is offline   Reply With Quote
Old 05-12-2008, 10:24 AM   #95
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2007
Location: waukesha, WI
Posts: 112
Thanks: 0
Thanked 0 Times in 0 Posts
Triple X is on a distinguished road
Default

come on guys no body has anything? please someone just look at it...(post above) i just dont want any body to for get about whats going on here...i realize that there is a lot of people on here but i guess i just trying to get noticed
Triple X is offline   Reply With Quote
Old 05-13-2008, 10:58 AM   #96
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

Idle looks fine. The PCM is trying pretty hard to lean it out when you have it at 3000 rpm. 128 is the target for the trims. Lower numbers means it'* rich and trying to remove fuel. Higher means its lean and trying to add fuel.
J Wikoff is offline   Reply With Quote
Old 05-13-2008, 12:42 PM   #97
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2007
Location: waukesha, WI
Posts: 112
Thanks: 0
Thanked 0 Times in 0 Posts
Triple X is on a distinguished road
Default

so do you think the PCM is bad?
Triple X is offline   Reply With Quote
Old 05-13-2008, 12:45 PM   #98
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

I don't know. I can think of a dozen ways to address a lean condition. Not much for rich. The ST being so low at 3000 rpm would suggest that it'* still learning. Have you changed anything recently and not driven much?
J Wikoff is offline   Reply With Quote
Old 05-13-2008, 04:45 PM   #99
Senior Member
Posts like a Northstar
 
Join Date: Jul 2006
Location: Waukesha, Wisconsin
Posts: 547
Thanks: 0
Thanked 0 Times in 0 Posts
Blownville is on a distinguished road
Default

I thought he swapped the ECM but I know he drives it every day to work but his work is close by. If it is leaning out at 3k wouldn't that be a clue to the fuel pressure drop?
Blownville is offline   Reply With Quote
Old 05-13-2008, 04:57 PM   #100
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Sep 2007
Location: waukesha, WI
Posts: 112
Thanks: 0
Thanked 0 Times in 0 Posts
Triple X is on a distinguished road
Default

i have changed a lot of things...look back on my post and you will see....somebody asked the same question in an earlyer post.
Triple X is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
can anybody help with my codes sseidriver97 General GM Chat 8 07-16-2010 10:06 PM
Got some new tires (update on page 2 about some diff. tires) TJ'sblackbonne General GM Chat 27 12-22-2006 03:00 PM
retieving engine codes for diagnostics-if someone can help Biz 1992-1999 6 08-22-2004 11:44 PM
You can pick you friends, you can pick your nose.... MOS95B Lounge 5 03-28-2004 04:46 AM
You win some.. you loose some... Drifter420 General GM Chat 4 09-04-2002 10:45 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 02:49 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.