P114d - How to clean Eventuri & MAF safely
- Thread starter pHilli0
- Start date
Finally got time to get INPA running:
Results in this dropbox gallery
https://www.dropbox.com/sh/nnj0zik5yur7cdm/AAB0t7tyJ4kBr9TNMWGS9N1ea/car/p114d?dl=0
I see that two codes
P114d is Lambda Sensor Bank 2 (after catalyst) - Trim Control
P2198 is Lambda Sensor Bank 2 (before catalyst) - System check
Is bank 2 the right hand bank or left hand bank when looking at the back of the car?
Seems odd for both sensors to be reporting a problem?
Do these results make the MAF more or less likely a suspect?
When I look at the mixture in INPA it looks like the bank 2 sensors are giving a reading, but I guess it is outside of trim parameters hence the code is being thrown?
Results in this dropbox gallery
https://www.dropbox.com/sh/nnj0zik5yur7cdm/AAB0t7tyJ4kBr9TNMWGS9N1ea/car/p114d?dl=0
I see that two codes
P114d is Lambda Sensor Bank 2 (after catalyst) - Trim Control
P2198 is Lambda Sensor Bank 2 (before catalyst) - System check
Is bank 2 the right hand bank or left hand bank when looking at the back of the car?
Seems odd for both sensors to be reporting a problem?
Do these results make the MAF more or less likely a suspect?
When I look at the mixture in INPA it looks like the bank 2 sensors are giving a reading, but I guess it is outside of trim parameters hence the code is being thrown?
I would say the Cat is knackered....
Look at the post cat lambda readings when running and see if its operating(switching rate) as fast as the pre cat lambda..If it is then the cat is goosed..
The post cat lambda should switch very slowly,approx once every few seconds...The post lambda should switch approx twice a second...
Look at the post cat lambda readings when running and see if its operating(switching rate) as fast as the pre cat lambda..If it is then the cat is goosed..
The post cat lambda should switch very slowly,approx once every few seconds...The post lambda should switch approx twice a second...
Z4M-2006 said:
OK so just to confirm the testing method, I go to the mixture page in INPA and get the live data. I then compare the number of times I see the pre cat changes on screen vs the post cat changes. The post cat should be slow every few seconds, the pre cat should be twice a second.
I will record a vid to share to make sure I get the right info.
The lambda on both banks are switching very slowly... This indicates the is either too much fuel or air in the mixture and the lambda's are struggling to control the mixture down to stoichiometric value..
So,split intakes or vacuum lines will cause unmetered air into the combustion process....This will affect long and short term fuel trims..
The air mass can also cause these faults but its rare...... The air mass meter needs to be seriously fouled or the hotwire broken.
From what eventuri said when they introduced the filters is that they didnt have any oil release... So if thats true,then its a thing to negate.
Get the new air mass meter on and see how you go..
So,split intakes or vacuum lines will cause unmetered air into the combustion process....This will affect long and short term fuel trims..
The air mass can also cause these faults but its rare...... The air mass meter needs to be seriously fouled or the hotwire broken.
From what eventuri said when they introduced the filters is that they didnt have any oil release... So if thats true,then its a thing to negate.
Get the new air mass meter on and see how you go..
Looks to me if bank 2 lambda's aren't correct. The voltage reading for both pre and post one's on 2 don't look right to me, I'll compare them with what I have when I get home if you want. Trouble with INPA is everyone seems to have different versions with some parts translated and some parts not.
Have you reset the adaptations recently with INPA as you don't seem to have any long term fuel trim adjustments on there which I believe are the 'multiplikative' readings. Usually you would have some adjustment even if small unless you've reset them, these are a good indication of how your running, rich or lean.
TBH, INPA ain't really that great of a tool, unless you have data to compare it to it's kinda useless as I've found out in the past. DIS works better IMO for the average joe if you have it as far as diag's go.
Have you reset the adaptations recently with INPA as you don't seem to have any long term fuel trim adjustments on there which I believe are the 'multiplikative' readings. Usually you would have some adjustment even if small unless you've reset them, these are a good indication of how your running, rich or lean.
TBH, INPA ain't really that great of a tool, unless you have data to compare it to it's kinda useless as I've found out in the past. DIS works better IMO for the average joe if you have it as far as diag's go.
