BANK 1 lean & bank 2 lean

Reply Subscribe

Thread Tools

Search this Thread

01-03-2012, 10:28 PM

#21

petrock

4th Gear Member

Join Date: Nov 2006

Location: CA

Posts: 1,670

Quote:

Originally Posted by RONLANCELOT12522

Ron Here. I have a 95 mustang 3.8.. when I go to start it when it's cold it's a ruff start any suggestion for me on what it could be?

Ron, start your own thread. Your issue is different then the original posters. Good luck...

01-04-2012, 09:20 AM

#22

robb15033

2nd Gear Member

Join Date: Dec 2010

Location: Virginia

Posts: 497

Quote:

Originally Posted by petrock

http://www.obd-codes.com/p0171
http://www.obd-codes.com/p0174

Both are indications of either the Mass Air Flow sensor is dirty and needs to be cleaned/replaced or you have a vacuum leak downstream of the MAF sensor.

Good luck...

+1
-Clean MAF sensor
-Vacuum leak or PCV valve got pulled out
-Seafoam upper intake manifold

01-16-2012, 10:33 AM

#23

Patterson 82

Join Date: Jan 2012

Location: Nc

Posts: 11

Throttle positioning sensor also

01-17-2012, 10:40 PM

#24

robb15033

2nd Gear Member

Join Date: Dec 2010

Location: Virginia

Posts: 497

Double check that the PCV is still plugged in and it still has spring pressure & operating OK. The EGR valve has 3 vacuum lines multi-colored, and banded together. They are plastic, not rubber so they are brittle and crack easy. One of the three runs up to upper intake manifold. Feel around and trace those. Clean the MAF sensor with appropriate cleaner. Spend $8.00 and Seafoam the hell out of it.
Please update when its running perfect. These pop up more often when you have a CAI and old Vacuum lines.