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Joined: Oct 2003
Posts: 60
IcE_Z
Member
IcE_Z Jun 12, 3:43pm - #197975 
2000 Red Toyota Celica
Member
2000 Toyota Celica

Joined: Oct 2003
Posts: 60
Midwest City, Oklahoma
C.E.L.=System too Lean?

went to Autozone today...had them check out what my CEL was saying and i got this...

PO171
System Too Lean
Bank #1

i asked the guy at autozone what does that mean...he said he didnt know...so im posting this here and my OK-website...any help would be appreciative
Joined: Apr 2003
Posts: 1,917
tru_Asiatik_Pride
Blue MnM
tru_Asiatik_Pride Jun 12, 4:00pm - #197976 

Blue MnM
2003 Toyota Celica

Joined: Apr 2003
Posts: 1,917
Southern California
heres what the code means--> web page
someoene else might know how to fix the problems
Joined: Aug 2003
Posts: 1,251
silver
Specialist
silver Jun 12, 7:24pm - #197977 
2000 Silver Toyota Celica GT
Specialist
2000 Toyota Celica GT

Joined: Aug 2003
Posts: 1,251
California
Clean MAF
Reset ECU
Check for Intake leaks
Joined: Oct 2003
Posts: 60
IcE_Z
Member
IcE_Z Jun 12, 8:39pm - #197978 
2000 Red Toyota Celica
Member
2000 Toyota Celica

Joined: Oct 2003
Posts: 60
Midwest City, Oklahoma
is there a proper way to clean the MAF?
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 8:59pm - #197979 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Click here for instructions on how to clean your mass air flow sensor (MAFS):

https://www.celicahobby.com/ubbthreads/thread.f_1862388016_0_collapsed_2__1.html
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 9:00pm - #197980 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
after cleaning it, reset your ecu by unbolting and disconnecting the negative terminal on your battery for 5 minutes.
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 9:02pm - #197981 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Let me know how it goes
Joined: Apr 2004
Posts: 162
jenn1356
Member
jenn1356 Jun 12, 9:04pm - #197982 

Member
2000 Toyota Celica GT

Joined: Apr 2004
Posts: 162
Kentucky
my car has the P0171 on it too-don't really know why, but I don't think it's gonna hurt anything.
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 9:10pm - #197983 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
I had the P0171 until i cleaned my mafs and reset my ecu, after that it disappeared. Try it jen
Joined: Jun 2003
Posts: 2,863
v3n0m
Specialist
v3n0m Jun 12, 9:13pm - #197984 

Specialist
2001 Toyota Celica GT

Joined: Jun 2003
Posts: 2,863
St. George, UT
Your car will feel completely different after you clean the MAF. Like it has new life.
Joined: Apr 2004
Posts: 162
jenn1356
Member
jenn1356 Jun 12, 9:15pm - #197985 

Member
2000 Toyota Celica GT

Joined: Apr 2004
Posts: 162
Kentucky
I've cleaned it twice or three times and didn't make any difference. It goes off after I clean it, then comes back on in a day or so.
Joined: Oct 2003
Posts: 60
IcE_Z
Member
IcE_Z Jun 12, 9:34pm - #197986 
2000 Red Toyota Celica
Member
2000 Toyota Celica

Joined: Oct 2003
Posts: 60
Midwest City, Oklahoma
thanks steven, i will go do that right now, thanks for the help
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 10:54pm - #197987 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Jen there are 2 spots on the MAFS you're supposed to clean, the air temp probe and the little wires in the canal. Here is the air temp probe:
Linked Image
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 10:55pm - #197988 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Here are the crutial wires that need to be cleaned. These are the ones that are probably really dirty and what caused your check engine light P0171.
Linked Image
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 12, 10:56pm - #197989 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Jenn - follow this entire set of instructions CAREFULLY
https://www.celicahobby.com/ubbthreads/thread.f_1862388016_0_collapsed_2__1.html
Joined: Oct 2003
Posts: 60
IcE_Z
Member
IcE_Z Jun 12, 11:19pm - #197990 
2000 Red Toyota Celica
Member
2000 Toyota Celica

Joined: Oct 2003
Posts: 60
Midwest City, Oklahoma
it worked...thanx steven...yea its like new...which i bought my car like this and i just thought they were like that...it helped my low end so much...it went from literally no low end to hey...its nice and the transition to lift is not hard any more...it just goes into like it should compared to night and day kickin it...but thanx for the help!!!
Joined: May 2003
Posts: 583
Jae
Senior Member
Jae Jun 13, 12:41am - #197991 

Senior Member
2001 Toyota Celica

Joined: May 2003
Posts: 583
palm springs, burbank CA
i don't know, i have 2001 gts and had it for about three year. i had clean the MAF, and it wasn't even dirty at all. so i dunno how your MAF gets dirty?
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Jun 13, 12:47am - #197992 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Quiet you.
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