318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Induction

Notices

Induction Superchargers, NO2 and turbos.

.
» Recent Threads
checking for cracks in...
08-03-2022 06:15 PM
Last post by far6car
08-03-2022 06:15 PM
0 Replies, 648 Views
Rear fog light question
01-23-2011 09:59 PM
Last post by ja_sam_vegan
07-30-2022 10:53 PM
7 Replies, 1,831 Views
318ti LSD or E30 LSD
04-23-2005 11:44 PM
Last post by iski123
07-29-2022 06:29 PM
29 Replies, 8,113 Views
Instrument cluster...
11-01-2020 03:07 PM
Last post by J!m
07-29-2022 11:29 AM
5 Replies, 3,263 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 06-05-2010, 07:00 PM   #1
m3nut
Senior Member
 
Join Date: Sep 2007
Location: UK
Posts: 101
iTrader: (0)
Default lambda sensor and the dasc

After fitting the new 3.4" pulley to my dasc, the lambda sensor packed up?

A few weeks back on the standard pulley I made a trip about an hour on the motorway (70-80mph) and was getting surging during light boost conditions.

Now the pulley has been fitted the first long trip (again same hour on the motorway) still got surging during light boost but this with time power loss??
Made it home, but by the time I got there it would not rev over 3k without total power loss!

The thing is I was associating the power loss with the surging as it seemed to be just after. The tick over was fine steady 700rpm

Got it hooked up on the code reader, and came up with o2 sensor as well as a long list including miss fire cylinder number 2/ maf ect.

The spark plugs were black and the lambda sensor was too. I have since replaced the sensor and the car is now running without any fault codes

But my question would be, have any of you guy's running the charger had problems with the car running rich and may be destroying o2 sensors or could it just be the extra boost has speeded up the faulty sensors life span?

I need to get it back out for a long run to see how it performs
m3nut is offline   Reply With Quote
Old 06-05-2010, 07:33 PM   #2
xxxJohnBoyxxx
Senior Member
 
Join Date: Dec 2007
Location: Gulfport, Florida
Posts: 3,208
iTrader: (1)
Default

Quote:
Originally Posted by m3nut View Post
After fitting the new 3.4" pulley to my dasc, the lambda sensor packed up?

A few weeks back on the standard pulley I made a trip about an hour on the motorway (70-80mph) and was getting surging during light boost conditions.

Now the pulley has been fitted the first long trip (again same hour on the motorway) still got surging during light boost but this with time power loss??
Made it home, but by the time I got there it would not rev over 3k without total power loss!

The thing is I was associating the power loss with the surging as it seemed to be just after. The tick over was fine steady 700rpm

Got it hooked up on the code reader, and came up with o2 sensor as well as a long list including miss fire cylinder number 2/ maf ect.

The spark plugs were black and the lambda sensor was too. I have since replaced the sensor and the car is now running without any fault codes

But my question would be, have any of you guy's running the charger had problems with the car running rich and may be destroying o2 sensors or could it just be the extra boost has speeded up the faulty sensors life span?

I need to get it back out for a long run to see how it performs
How many miles on that O2 sensor you replaced? Yes the boost will heat up the O2 more and cause thing to fail earlier. I've heard a super rich tune can kill a O2 sensor but I have never done this before on my motor and I've run with AFR in the low 9:1 ratio, black smoke flying out the exhaust...

Last edited by xxxJohnBoyxxx; 06-05-2010 at 07:36 PM.
xxxJohnBoyxxx is offline   Reply With Quote
Old 06-05-2010, 07:51 PM   #3
m3nut
Senior Member
 
Join Date: Sep 2007
Location: UK
Posts: 101
iTrader: (0)
Default

The cars on 93k not sure if the o2 sensor has ever been replaced, if not then could just be age/mileage related.
After fitting it, I did give full beans (the sound with the new pulley was great) and did look in the mirror to see smoke behind. Does the ecu need more time/miles to learn now the o2 sensor has been replaced and lean out?
m3nut is offline   Reply With Quote
Old 06-11-2010, 04:02 PM   #4
xxxJohnBoyxxx
Senior Member
 
Join Date: Dec 2007
Location: Gulfport, Florida
Posts: 3,208
iTrader: (1)
Default

Quote:
Originally Posted by m3nut View Post
The cars on 93k not sure if the o2 sensor has ever been replaced, if not then could just be age/mileage related.
After fitting it, I did give full beans (the sound with the new pulley was great) and did look in the mirror to see smoke behind. Does the ecu need more time/miles to learn now the o2 sensor has been replaced and lean out?
Delayed responce but yes the computer will learn or "adapt" to the correct AFR over a certain amount of milage and driving conditions. It is about 15 minutes of driving depending how far off the baseline you are at when you start with the new sensor
xxxJohnBoyxxx is offline   Reply With Quote
Old 06-11-2010, 05:35 PM   #5
m3nut
Senior Member
 
Join Date: Sep 2007
Location: UK
Posts: 101
iTrader: (0)
Default

Thanks for the replies Johnboy, took the car on the motorway today did about 20 miles and it was 100% better
Steady 70-80 seemed easier to drive, not wanting to keep revving and very little surging! Think the old sensor was duff to start with.
m3nut is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lambda Emissions Control CEL robcarync Engine 7 04-16-2010 06:59 AM
Front Passenger ABS sensor.. rear pad wear sensor! xunearthhxcx US and North America 5 09-18-2009 05:20 AM
What is Fault code EMISSION (LAMBDA) CONTROL wls318ti Engine 1 04-13-2008 10:15 PM
MAF sensor! need help uaza Maintenance 6 03-26-2007 10:57 PM
Dinan + DASC? Pic request for DASC intakes 96cali Induction 2 03-05-2007 09:22 PM


All times are GMT +1. The time now is 08:44 AM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2022, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 76.11 k/88.61 k (14.11%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.