 |
|
01-17-2009, 03:22 PM
|
#1
|
|
Registered Member
Join Date: Oct 2008
Posts: 1,873
Country: United States
Location: orlando, florida
|
Fuel Injection Lean?
check engine light came on today. SCII says P0171. Haynes manual says fuel injection system lean.
any thoughts?
2000 toyota corolla, i mean, chevy prizm 5 speed.
thanks.
__________________
|
|
|
|
01-17-2009, 04:00 PM
|
#2
|
|
Registered Member
Join Date: Apr 2008
Posts: 1,831
|
this may be a start
http://www.obd-codes.com/p0171
maybe it will give you some ideas
__________________
Be the change you wish to see in the world
--Mahatma Gandhi
|
|
|
|
|
01-18-2009, 06:53 AM
|
#3
|
|
Registered Member
Join Date: Oct 2008
Posts: 1,873
Country: United States
Location: orlando, florida
|
thanks Beef!
from what i can ascertain from your link:
clean the MAF sensor and check for vacuum leaks downstream. and the sensor may need to be replaced.
|
|
|
|
|
01-18-2009, 06:54 AM
|
#4
|
|
Site Team
Join Date: Dec 2006
Posts: 659
Country: United States
|
Fuel pressure?
Dead injector?
Have you ever cleaned your injectors?
Wiring to an injector?
Lousy O2 sensor?
Lazy fuel pump? Low voltage to fuel pump?
Leak in the exhaust system?
|
|
|
|
|
01-18-2009, 10:32 AM
|
#5
|
|
Registered Member
Join Date: Oct 2008
Posts: 1,873
Country: United States
Location: orlando, florida
|
Bob,
everything is running great. mpg is a bit low, but it has been cooler on morning trips. scangauge shows good mpg during the day when temps rise(typical florida winter can be 40F am and 70F at noon). ~37 mpg am and ~43 pm to be specific.
i use amsoil fuel cleaner regularly, but the O2s are new and not OEM.
a toyota tech on another site says a dirty MAF(or one that needs replacing) shows no sign in regard to performance. sounds like my situation.
i did clean it today(MAF), and will add amsoil PI to the next fill-up.
|
|
|
|
|
01-18-2009, 09:02 PM
|
#6
|
|
Registered Member
Join Date: Nov 2007
Posts: 742
Country: United States
Location: Columbus, IN, USA
|
be wary of any additives. an even marginally decent running car shouldn't need anything put in the oil or gas. additives can lead to bad readings and cars can be addicted to them (so to speak)
careful what you use to clean the MAF, anything not specifically made for that job can destroy the MAF
__________________
-Russell
1991 Toyota Pickup 22R-E 2.4 I4/5 speed
1990 Toyota Cressida 7M-GE 3.0 I6/5-speed manual
mechanic, carpenter, stagehand, rigger, and know-it-all smartass
"You don't get to judge me for how I fix what you break"
|
|
|
|
|
01-19-2009, 01:34 PM
|
#7
|
|
Registered Member
Join Date: Oct 2008
Posts: 1,873
Country: United States
Location: orlando, florida
|
kamesama980,
there's a multi-award winning mechanic here locally that recommends fuel additives, BUT only certain ones. amsoil is one.
and i did use MAF specific cleaner that smelled suspiciously like brake cleaner. i wonder if i could have saved a few bucks going that avenue instead?
|
|
|
|
|
01-19-2009, 04:24 PM
|
#8
|
|
Registered Member
Join Date: Feb 2008
Posts: 1,652
|
Brake fluid? I can imagine them smelling like brake cleaner, because non-chlorinated "ABS sensor safe" brake cleaner is safe on them as is any "electrical contact cleaner" as is isopropyl alcohol.
__________________
I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
|
|
|
|
|
01-19-2009, 04:27 PM
|
#9
|
|
Registered Member
Join Date: Oct 2008
Posts: 1,873
Country: United States
Location: orlando, florida
|
Quote:
Originally Posted by RoadWarrior
Brake fluid? I can imagine them smelling like brake cleaner, because non-chlorinated "ABS sensor safe" brake cleaner is safe on them as is any "electrical contact cleaner" as is isopropyl alcohol.
|
yup, brake cleaner, not fluid, thanks. it's been edited.
|
|
|
|
|
02-27-2009, 03:49 PM
|
#10
|
|
Registered Member
Join Date: Oct 2008
Posts: 1,873
Country: United States
Location: orlando, florida
|
i've cleaned the MAF sensor twice, and the FI lean code has come back twice. after resetting the code, it takes between half and 1/4 tank to come back.
looks like i'll be headed to NAPA soon.
would any like to speculate if this could lower FE? again, i've been a bit low, but each of the recent tanks have had some near freezing mornings.
__________________
|
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Car Talk & Chit Chat |
|
|
|
|
|
|
|
|
|
|
|
» Fuelly iOS Apps |
|
|
|
|
|
|
|
» Fuelly Android Apps |
|
No Threads to Display.
|
|
Linear Mode
