Check engine light

**dimensionxzero** · 09-04-2006, 05:48 PM

alright, so i have an Injen cold air intake and i've had it for about 11k miles without any problems, but recently my cel has been going on and i keep getting p0171... which, if im correct, is system running lean. I cleaned the maf, and used fuel injector cleaner and cleared the code. it was fine for about 500 miles and then it came on again.

is there anything i can do to prevent it from coming back on?

i think im going to change the fuel filter, but i couldn't find a part number, anybody have it?

**Wakenthefallen** · 09-04-2006, 06:19 PM

i get the exact same problems.....

my idea was that either the pipe is too big in diameter..
the MAF is made for a 2.5 inche pipe.. and mine is a bit bigger..

the other i heard was that my cold air was too long. making the engine push really hard to suck the air all the way up the pipe.

i bought a short ram and im hoping that will help..

im in your boat man. were in this togethor lol.

**flylice13** · 09-04-2006, 08:43 PM

duct tape, lol..

but on a serious note, i have the same problem, but mine is giving out a different code (I've got a 2004 gt-s and if i'm not mistaken, they didn't make a CAI for the 2004 and 2005 gt-s) I'm using the Injen RD CAI for 2002 GT-S

**Wakenthefallen** · 09-05-2006, 01:44 AM

The guy at autozone told me to get techron..

is that just for cleaning the injectors???

**Dgordon** · 09-08-2006, 10:15 PM

Not sure if this is the issue, but I have a K&N short ram that has been on for 1 1/2 years now. Has always worked well. No engine lights for sometime, but I have to say that the car has seemed sluggish the last few months. Bogging on startoff, and also hesitating on full throttle. Had the car checked and they replaced the MAF, 210.00 CDN for the replacement. Now, have to mention they also did the plugs as my car has just passed 136k. Folks, it now runs fantastic, like new. The Mass Air Flow sensor (MAF) had been cleaned once prior, but the mechanic whom I trust mentioned they do have a finite life. fwiw.

**91EclipseGS** · 09-08-2006, 10:31 PM

my gf gets system too lean bank 1...i looked in a manuel and it is a sortment of things that can be wrong...we changed the air sensor and cleaned the injectors...no small time mechanic can fix this problem...sadly this is a Toyota problem...cause they can try all the parts at no cost to them...just the labor will porb be unreal...unless this is covered by your warrenties

**dimensionxzero** · 09-09-2006, 04:25 AM

well, i don't know whats going on, but the light came on today again... but this time something felt different in the engine.

it feels like lift isn't initiating, and almost not hitting at all. it does feel like it has a little less power before lift, but right at lift, it used to be like flicking a switch, but i can't hear it at all anymore. i didn't do anything that would make this happen, i just started it up one day and went for a drive, and the lift stopped working. now don't think i run completely in lift, i don't usually hit it, and when i do, usually its just for one gear. i did the wooden dowel to each cylinder trick, all sounded the same, and fine to me.

the worst part is that im trying to sell my car... but with all this shit going on, i have no idea how thats gonna work.

to my point. anybody know what could be wrong? its a 2000 gt-s with 61k miles on it.

**flylice13** · 09-09-2006, 12:10 PM

get rid of the CAI...CAI has been creating problems for cars ever since it came out. Sometimes it works perfectly, sometimes it doesn't.
If you're trying to sell the car, just take the CAI out cause not very many people want to have a car with problems.

**91EclipseGS** · 09-09-2006, 03:58 PM

my gf's car has the same problem...and she doesn't have a CAI

**flylice13** · 09-09-2006, 04:52 PM

^^ dirty air filter?

**91EclipseGS** · 09-10-2006, 10:27 AM

^^^nope

**ashleyieko** · 09-14-2006, 05:25 PM

i`ve had the same problem. 2000 celica GTS; 101,000 miles. i took it to autozone and had the guy run a diagnostic several times over the course of a week. everytime it was the same code = fuel running lean, bank 1. i bought fuel injector cleaner and the problem still came up. at that time i had a no name cold air and it was happening a lot. i got an injen one recently. although the problem still comes up it doesn`t happen half as often. the last time i went to autozone the guy was telling me it could be something in the computer, air to fuel ratio. he said i`d probably have to take it to toyota to get the ecu`s air to fuel ratio readjusted. but who knows. hope you find out what it is.

**00celica** · 09-17-2006, 10:22 PM

lol im 91eclipsegs's girlfriend.. its so annoying and the light keeps turning on and off... 3 mechanics have no idea what it is.. i hope its not a problem in the computer bc i am thinkin about sellin my car for a TSX and i cant sell it without fixing the problem

**ricancelica** · 09-22-2006, 08:59 PM

Its awesome to know that there is more people with same problem and is not only my Celica, I have a 2000 GT with 58K miles on it just got the cold air intake 4 months ago and one day it came out with the ligth, I reseted the CPU and it came back again 4 days ago; took it to auto zone and the same thing LEAN fuel air ratio, I got a lucas fuel injector cleaner and the ligth came out after 4 restarts and so far i has been good.

**kikaider** · 09-23-2006, 07:37 PM

Quote:

Originally Posted by ricancelica

Its awesome to know that there is more people with same problem and is not only my Celica, I have a 2000 GT with 58K miles on it just got the cold air intake 4 months ago and one day it came out with the ligth, I reseted the CPU and it came back again 4 days ago; took it to auto zone and the same thing LEAN fuel air ratio, I got a lucas fuel injector cleaner and the ligth came out after 4 restarts and so far i has been good.

Got a 2000 Gt and I have sluggish start and on throttle sometimes it seems to get choked up(funny thing is my mileage is about the same as yours 56k and I reset CPU and just about 4 days later it came on which I kinda find funny), Mechanic at the toyota dealership here said it happens to alot of Toyotas the 02 sensors go out right around 60k so right now I just order my Oxygen sensors but if its not that I was told it could be my converter will post again once I replace the 02 sensors they should be in next week hope my car is done with paint and body work by then so I cam drop them in with my new sound system but no Idea post with pics soon I hope

**dimensionxzero** · 09-24-2006, 11:15 PM

so i found out what was causing the vvtli not to hit correctly. it was bad oil. lesson learned: never go to jiffy lube, even if its free. my friend gave me a free oil change cuz he worked there, but i guess they put additives in your engine when they put in your oil for some stupid reason, so my engine was tweaking off of that stuff.

**cashmoney** · 11-17-2006, 03:24 AM

for everyone with system lean light, try replacin tha mass airflow sensor..i had the same light,i replaced the MAF and now it runs like a dream

**00celica** · 12-10-2006, 03:13 AM

i believe u can also clean the mafs...

correct me if im wrong but im 99% sure u can

**cashmoney** · 12-10-2006, 11:19 PM

Yah, you can clean it but the sensor is very sensitive...so be careful if you try..you might fuck it up.

**02Celi~>LeelaSmiles** · 02-02-2008, 07:16 PM

About a week ago my engine check light came on, i finally got it checked up on and it was the o2

09-04-2006, 05:48 PM	#1 (permalink)
dimensionxzero Location: california Posts: 56 Join Date: Dec 2005 Last On: 05-31-2007 03:08 PM Vehicle: 2000 GTS 2nd Vehicle: Ford Explorer	Check engine light alright, so i have an Injen cold air intake and i've had it for about 11k miles without any problems, but recently my cel has been going on and i keep getting p0171... which, if im correct, is system running lean. I cleaned the maf, and used fuel injector cleaner and cleared the code. it was fine for about 500 miles and then it came on again. is there anything i can do to prevent it from coming back on? i think im going to change the fuel filter, but i couldn't find a part number, anybody have it?

09-04-2006, 06:19 PM	#2 (permalink)
Wakenthefallen Location: helena MT Posts: 114 Join Date: Jun 2006 Last On: 12-14-2006 07:26 PM Vehicle: 2000 celi gts	i get the exact same problems..... my idea was that either the pipe is too big in diameter.. the MAF is made for a 2.5 inche pipe.. and mine is a bit bigger.. the other i heard was that my cold air was too long. making the engine push really hard to suck the air all the way up the pipe. i bought a short ram and im hoping that will help.. im in your boat man. were in this togethor lol. __________________ I SEE A RED CAR AND I WANT TO PAINT IT BLACK

09-05-2006, 01:44 AM	#4 (permalink)
Wakenthefallen Location: helena MT Posts: 114 Join Date: Jun 2006 Last On: 12-14-2006 07:26 PM Vehicle: 2000 celi gts	The guy at autozone told me to get techron.. is that just for cleaning the injectors??? __________________ I SEE A RED CAR AND I WANT TO PAINT IT BLACK

09-09-2006, 04:25 AM	#7 (permalink)
dimensionxzero Location: california Posts: 56 Join Date: Dec 2005 Last On: 05-31-2007 03:08 PM Vehicle: 2000 GTS 2nd Vehicle: Ford Explorer	well, i don't know whats going on, but the light came on today again... but this time something felt different in the engine. it feels like lift isn't initiating, and almost not hitting at all. it does feel like it has a little less power before lift, but right at lift, it used to be like flicking a switch, but i can't hear it at all anymore. i didn't do anything that would make this happen, i just started it up one day and went for a drive, and the lift stopped working. now don't think i run completely in lift, i don't usually hit it, and when i do, usually its just for one gear. i did the wooden dowel to each cylinder trick, all sounded the same, and fine to me. the worst part is that im trying to sell my car... but with all this shit going on, i have no idea how thats gonna work. to my point. anybody know what could be wrong? its a 2000 gt-s with 61k miles on it. Last edited by dimensionxzero : 09-09-2006 at 04:28 AM.

09-17-2006, 10:22 PM	#13 (permalink)
00celica Location: new york Posts: 69 Join Date: Mar 2006 Last On: 03-13-2007 07:02 PM	lol im 91eclipsegs's girlfriend.. its so annoying and the light keeps turning on and off... 3 mechanics have no idea what it is.. i hope its not a problem in the computer bc i am thinkin about sellin my car for a TSX and i cant sell it without fixing the problem __________________

09-08-2006, 10:15 PM	#5 (permalink)
Dgordon Location: Port Hope Posts: 95 Join Date: Oct 2003 Last On: 10-15-2008 09:56 PM Vehicle: 2000 Celica GT	Not sure if this is the issue, but I have a K&N short ram that has been on for 1 1/2 years now. Has always worked well. No engine lights for sometime, but I have to say that the car has seemed sluggish the last few months. Bogging on startoff, and also hesitating on full throttle. Had the car checked and they replaced the MAF, 210.00 CDN for the replacement. Now, have to mention they also did the plugs as my car has just passed 136k. Folks, it now runs fantastic, like new. The Mass Air Flow sensor (MAF) had been cleaned once prior, but the mechanic whom I trust mentioned they do have a finite life. fwiw.

09-08-2006, 10:31 PM	#6 (permalink)
91EclipseGS Location: New York Posts: 71 Join Date: Feb 2006 Last On: 04-15-2007 10:14 PM	my gf gets system too lean bank 1...i looked in a manuel and it is a sortment of things that can be wrong...we changed the air sensor and cleaned the injectors...no small time mechanic can fix this problem...sadly this is a Toyota problem...cause they can try all the parts at no cost to them...just the labor will porb be unreal...unless this is covered by your warrenties

09-09-2006, 03:58 PM	#9 (permalink)
91EclipseGS Location: New York Posts: 71 Join Date: Feb 2006 Last On: 04-15-2007 10:14 PM	my gf's car has the same problem...and she doesn't have a CAI

09-10-2006, 10:27 AM	#11 (permalink)
91EclipseGS Location: New York Posts: 71 Join Date: Feb 2006 Last On: 04-15-2007 10:14 PM	^^^nope

09-14-2006, 05:25 PM	#12 (permalink)
ashleyieko Location: Jacksonville Posts: 8 Join Date: Aug 2006 Last On: 10-22-2006 07:50 PM	i`ve had the same problem. 2000 celica GTS; 101,000 miles. i took it to autozone and had the guy run a diagnostic several times over the course of a week. everytime it was the same code = fuel running lean, bank 1. i bought fuel injector cleaner and the problem still came up. at that time i had a no name cold air and it was happening a lot. i got an injen one recently. although the problem still comes up it doesn`t happen half as often. the last time i went to autozone the guy was telling me it could be something in the computer, air to fuel ratio. he said i`d probably have to take it to toyota to get the ecu`s air to fuel ratio readjusted. but who knows. hope you find out what it is.

09-22-2006, 08:59 PM	#14 (permalink)
ricancelica Location: Kentucky Posts: 10 Join Date: Sep 2006 Last On: 10-14-2006 06:49 PM	Same problem here Its awesome to know that there is more people with same problem and is not only my Celica, I have a 2000 GT with 58K miles on it just got the cold air intake 4 months ago and one day it came out with the ligth, I reseted the CPU and it came back again 4 days ago; took it to auto zone and the same thing LEAN fuel air ratio, I got a lucas fuel injector cleaner and the ligth came out after 4 restarts and so far i has been good.

09-24-2006, 11:15 PM	#16 (permalink)
dimensionxzero Location: california Posts: 56 Join Date: Dec 2005 Last On: 05-31-2007 03:08 PM Vehicle: 2000 GTS 2nd Vehicle: Ford Explorer	so i found out what was causing the vvtli not to hit correctly. it was bad oil. lesson learned: never go to jiffy lube, even if its free. my friend gave me a free oil change cuz he worked there, but i guess they put additives in your engine when they put in your oil for some stupid reason, so my engine was tweaking off of that stuff.

11-17-2006, 03:24 AM	#17 (permalink)
cashmoney Location: missouri Posts: 17 Join Date: Nov 2006 Last On: 01-03-2007 01:03 AM	Re: Check engine light for everyone with system lean light, try replacin tha mass airflow sensor..i had the same light,i replaced the MAF and now it runs like a dream

12-10-2006, 03:13 AM	#18 (permalink)
00celica Location: new york Posts: 69 Join Date: Mar 2006 Last On: 03-13-2007 07:02 PM	Re: Check engine light i believe u can also clean the mafs... correct me if im wrong but im 99% sure u can __________________

12-10-2006, 11:19 PM	#19 (permalink)
cashmoney Location: missouri Posts: 17 Join Date: Nov 2006 Last On: 01-03-2007 01:03 AM	Re: Check engine light Yah, you can clean it but the sensor is very sensitive...so be careful if you try..you might fuck it up.

02-02-2008, 07:16 PM	#20 (permalink)
02Celi~>LeelaSmiles Location: Merced, CA Posts: 3 Join Date: Feb 2008 Last On: 04-20-2008 07:13 PM	Re: Check engine light About a week ago my engine check light came on, i finally got it checked up on and it was the o2