Lean condition - Nissan Versa Forums
General Technical & Electrical Anything not in a specific group, discuss here

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 04-24-2017, 03:18 PM Thread Starter
Level I Member
 
Join Date: Apr 2017
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Lean condition

Hello guys I have Nissan versa 2008 It shows the lean code p01071. I displayed the live data and the short fuel trim is 25. When I press on the fuel pedal the value of the SFT is increase slightly and when I release The value decrease to zero then it returns to 25. I disconnected the maf and i got -25 value . Please see the attached video of the live data. I would be so grateful if someone help me with this problem it is really stressing me.
Dhiaa LaMi is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 04-24-2017, 07:55 PM
Level VI Member
 
Join Date: Oct 2016
Location: Central, VA
Posts: 1,105
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Feedback Score: 0 reviews
Id check for air leaks between the throttle plate and air filter.
Cobb is offline  
post #3 of 5 Old 04-26-2017, 06:25 AM
Level VI Member
 
Join Date: Jan 2017
Posts: 823
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Feedback Score: 0 reviews
Most of the time that sort of thing is caused by a vacuum leak somewhere, look for disconnected or cracked hoses................
amc49 is offline  
Sponsored Links
Advertisement
 
post #4 of 5 Old 04-28-2017, 09:06 AM Thread Starter
Level I Member
 
Join Date: Apr 2017
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Thumbs up leak

thank you guys for your suggestions. in fact it was difficult to figure it out. after i cleaned the intake manifold and I was sure it it's seal then I tried to run the car and my obdii displayed the same issue air to fuel in between 20 to 25 :1 and the engine is shaking and dying at the idle speed. again i confirmed when i press the fuel pedal the air to fuel ratio decreases and almost normal! so I was confident that there was a magical leak. I did replaced fuel pump and spark plagues but nothing happened again. Then I purchased carbon cleaner and sprayed it on the intake manifold and i noticed rpm increases plus on obdii ELM327 the air to fuel decreased! but the weird thing we already opened the intake manifold and placed the gasket very well! finally i took it to technician and he confirms my guess that there is a leak after that he opened the injectors and here is the magic! injectors rubber seals were bad and can't prevent air from leaking. problem solved after really bad time. thanks for your support.

regards,
Dhiaa LaMi is offline  
post #5 of 5 Old 04-29-2017, 10:50 AM
Level VI Member
 
Join Date: Jan 2017
Posts: 823
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Feedback Score: 0 reviews
Like I said 9 times out of 10 a vacuum leak.
amc49 is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome