98 f150 "system too lean"
Thread Starter
|
Junior Member
Joined: Feb 2010
Posts: 3
Likes: 0
98 f150 "system too lean"
Hello! looking for help or guidance with my 98 f150...its a triton v8 4.6....For the first time since I've owned the truck, the check engine light came on. I'm in a bit of a spot where I have no help really, and I'm LOST as to where to begin dealing with this...I'm capable of minor repairs or changing oil...usually anything Im able to get info on....but I stopped at an auto place and the guy said," its ok, you got two "system too lean" reports or errors"??? He said it meant that the oxygen to fuel ratio was too rich in oxygen when it entered the combustion chamber........but that its fine, drive it....Seriously, that's nice, but is it true? I've found it easier to fix s*it b4 its broken too badly, I need my vehicle and a second (or more) opinion on the "it's fine"....plus she's been sucking gas more than normal = )
Thread Starter
|
Junior Member
Joined: Feb 2010
Posts: 3
Likes: 0
thank you, it will take a bit, but i will go check that,
Member
Joined: Nov 2006
Posts: 78
Likes: 0
From: Oregon
Sucking more gas than normal could just be the fact that you're probably using a winter fuel blend which is less efficient.
Your check engine light could also be from failing upstream O2 sensors. They're what report rich/lean conditions and they become more and more inaccurate as they age. They're supposed to be replaced every 100k so it's worth looking into.
Your check engine light could also be from failing upstream O2 sensors. They're what report rich/lean conditions and they become more and more inaccurate as they age. They're supposed to be replaced every 100k so it's worth looking into.
Senior Member
Joined: Dec 2006
Posts: 43,542
Likes: 819
From: Joplin MO
If the codes were P0171 and P0174, the O2 sensors are fine, they are doing their job and REPORTING a lean condition. Most commonly a vacuum leak, with the PCV elbow being the prime suspect. Sometimes caused by a restricted fuel filter.
Thread Starter
|
Junior Member
Joined: Feb 2010
Posts: 3
Likes: 0
Sucking more gas than normal could just be the fact that you're probably using a winter fuel blend which is less efficient.
Your check engine light could also be from failing upstream O2 sensors. They're what report rich/lean conditions and they become more and more inaccurate as they age. They're supposed to be replaced every 100k so it's worth looking into.
Your check engine light could also be from failing upstream O2 sensors. They're what report rich/lean conditions and they become more and more inaccurate as they age. They're supposed to be replaced every 100k so it's worth looking into.
