It is currently Tue Sep 25, 2018 2:49 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Fri Sep 07, 2018 7:48 am 
Offline
SE Member
SE Member

Joined: Tue Dec 13, 2016 10:12 am
Posts: 13
Year and Trim: 2000 SE
2002 SSEI
Need some help, chasing my tail, sorta. I have completed the series III supercharged (L32) swap :banana: to my 2002 bonny in place of my knocking L67 #-o

I'm getting a rough idle once it goes into closed loop with no codes until last night. Finally got a P0172 code. I've checked for intake leaks, replace both o2 sensors, MAF sensor, had the exhaust leak repaired and so on. Running L32 EVAP Solenoid, everything else is L67 sensors and TB with ZZ adapter.

Do I need to replace my OEM ECM with one from ZZ performance that has been updated for the bigger supercharger? I currently have it scheduled to replace the lower and upper intake gaskets because I thought maybe an internal coolant leak is what might be causing the stumbling idle once it goes into closed loop. I did notice that when I accelerate that the Long Term FT seems to settle in at -17.969% and doesn't change until I let off the gas. I would have expected that to continue to move around?

Here is the freeze frame data.

Freeze frame information:
------------------
Fuel Status = 0 byte
Engine Load = 11.765 %
Engine Coolant Temperature = 181.4 °F
Fuel Trim Bank 1 Short Term = -0.781 %
Fuel Trim Bank 1 Long Term = -17.969 %
Intake Manifold Pressure = 10.733 psi
Engine RPM = 1,593 rpm
Speed (OBD) = 59.652 mph
Mass Air Flow Rate = 30.17 g/s
Throttle Position(Manifold) = 11.373 %

Any help to try and narrow this thing down would be greatly appreciated.


Top
 Profile  
 
PostPosted: Fri Sep 07, 2018 7:56 am 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Tue May 27, 2008 8:53 am
Posts: 5342
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom
10.7psi manifold pressure, at 11% throttle? Am I reading that right? If so, that sounds wrong.

_________________
~Randall~
ImageImage

1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place


Top
 Profile  
 
PostPosted: Fri Sep 07, 2018 8:03 am 
Offline
SE Member
SE Member

Joined: Tue Dec 13, 2016 10:12 am
Posts: 13
Year and Trim: 2000 SE
2002 SSEI
I'm assuming that is what the sensor is telling the ECM. I'm using the L67 MAP. Should I be using the L32?

I think I've answered my own question here. I looks like the L32 MAP sensor has a different type connector than the L67, so I'm assuming that I'm correct in using the L67 MAP.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours [ DST ]


Related topics
 Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Odd stumbling...

Z-type

10

1535

Fri Jun 01, 2012 10:44 pm

bc21 View the latest post

There are no new unread posts for this topic. Engine Stumbling

jedwards83

2

998

Mon Feb 14, 2011 12:19 am

Ken_W View the latest post

There are no new unread posts for this topic. Stumbling problem

chophillies

6

706

Thu Aug 28, 2014 8:13 am

Jfridge92 View the latest post

There are no new unread posts for this topic. Stumbling under low RPM / high load

jedwards83

5

1657

Mon Jul 11, 2011 10:29 pm

00Beast View the latest post

There are no new unread posts for this topic. ITS BACK AGAIN hesitating and & stumbling

1997SEgreenmonster

1

547

Sat Oct 26, 2013 6:55 am

cooljoe51 View the latest post

 


Who is online

Users browsing this forum: No registered users and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group


phpBB SEO