SPONSORED LINKS

2003 Ford Explorer codes P0171 and P0174

Tiny
COPENNY2000
  • MEMBER
  • 2003 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
I have found out what these codes stand for which is system to lean (bank 1) and stystem to lean (bank 2) but my quesstion is how do you fix the problem and what is it exactly?
Monday, February 25th, 2008 AT 11:13 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
It most likley means you have a vacuum leak, and with the plastic intake manifolds, it's probably where the two halfs meet, get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs!
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, February 25th, 2008 AT 11:21 AM

Please login or register to post a reply.

Related Engine Lean Content

How To Fix an Engine Backfire
VIDEO
How To Fix an Engine Backfire
Instructional repair video
Lean Exhaust
GUIDE
Lean Exhaust
Common Misconception: When an engine misfires, the cylinder runs lean, not rich, this is because the air to fuel ratio favors air by 14x. Therefore, an engine must be...
VIEW MORE

Sponsored links