2001 Nissan Sentra Wont idle with cold weather

2001 NISSAN SENTRA
172,000 MILES • 1.8L • 4 CYL • FWD • AUTOMATIC
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BIGGE
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  • 15 POSTS
The car cranks find with engine cold but shuts off after a few seconds , it is worse in cold weather, can keep foot on gas till car warms up and it will run fine, also it have been doing this a couple of months and today it set a code P0171. I have taken the IACV off and cleaned and replaced the MAF
Nov 20, 2014 at 5:50 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
P0171 Nissan - Fuel Injection System Too Lean Bank 1

Possible causes

- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection

Check all tune related items, blocked air or fuel filter, worn spark plugs and vacuum leaks,
Start here.




Nov 20, 2014 at 6:42 PM
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BIGGE
  • MEMBER
  • 15 POSTS
Fuel filter, plugs , air filter are good and I checked vacuum system with starter fluid with no change
Nov 21, 2014 at 11:30 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Have you checked all the other items on the list?
Nov 22, 2014 at 8:58 PM
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