Check Engine Light and Lean Mixture Code - 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 01-23-2008, 11:02 AM   #1
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2002
Posts: 120
Thanks: 0
Thanked 0 Times in 0 Posts
crod101 is on a distinguished road
Default Check Engine Light and Lean Mixture Code

My 97 SSEi needs to be inspected. I've been driving a while with the check engine light. My mechanic checked the codes and received a lean mixture indicator. He diagnosed it as a line pressure leak in a tube under the throttle body. He needs to order the part from the dealer. I can't pass inspection with the check engine on.

Is anyone familiar with this problem? I haven't really noticed any problems driving.
crod101 is offline   Reply With Quote
Old 01-25-2008, 05:36 PM   #2
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2002
Posts: 120
Thanks: 0
Thanked 0 Times in 0 Posts
crod101 is on a distinguished road
Default

Got the car back from the mechanic. He told me that it might not pass inspection because the Check Light is intermittent. Sometimes it comes on after hard acceleration or open throttle. He noticed that the MAF Screen was removed and didn't know why. Anyway, he said that it might be causing the light to come on.

I have a after market CAI with a SLP Cone Filter and 60degree tube intake. It has an Intense PCM, Colder Autolite Plugs and performance wires. He thinks it'* possibly getting too much air and using too much gas. Does anyone know if this is causing the check engine light to be on? I can't inspect the car with this condition.

My other SSEi does have the MAF Screen removed also but it has a K&N replacement filter with the stock air box. It doesn't have the check engine on at any time.

My previous car ('95 SSE) also had the MAF Screen removed with no problems.

I've heard that some cars have idle problems and some not. Should I put the MAF Screen back?
crod101 is offline   Reply With Quote
Old 01-25-2008, 05:58 PM   #3
Senior Member
Posts like a Camaro
 
Join Date: Nov 2007
Location: MN
Posts: 1,172
Thanks: 0
Thanked 0 Times in 0 Posts
Bonnevillan is on a distinguished road
Default

i would. it'* not giving you much performance anyway.
Bonnevillan is offline   Reply With Quote
Old 01-28-2008, 11:18 AM   #4
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2002
Posts: 120
Thanks: 0
Thanked 0 Times in 0 Posts
crod101 is on a distinguished road
Default

Well, I installed the MAF Screen and the check engine light went away after the next day of driving. It should pass the inspectiopn now. The only difference I've noticed is that the gas pedal feels harder at the low end. After inspecting it, I'll see if it feels the same. Also, I used to get a bit more than 8psi of boost at full throttle and now I get a bit less than 8. So, I'll have to remove and install the MAF Screen for the yearly inspection.
crod101 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1998 Catera - Check Engine Light, ABS Light and TC light on lucille2 Cadillac 2 02-10-2011 11:58 AM
Engine miss, check engine light on - NO code mdrose64 1992-1999 12 07-16-2007 12:43 PM
Intermittant code 41, and check engine light. Timothy's Buick 1987-1991 2 11-02-2005 09:15 PM
am I ok? {gas mixture} xX1SSEI1Xx General GM Chat 6 04-16-2005 04:23 AM
Check engine light- Fuel mixture too rich on right bank malatu 2000-2005 0 10-29-2004 06:21 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 05:55 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.