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who has a check engine light on after intake? #177705 May 12, 6:46pm May 12, 6:46pm
Joined: Apr 2004
Posts: 162
Kentucky
jenn1356 OP
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2000 Toyota Celica GT
jenn1356 OP
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2000 Toyota Celica GT

Joined: Apr 2004
Posts: 162
Kentucky
who has a check engine light on after intake?
This is a continuation of a post I did earlier, but I'm just wondering how many of you had your check engine light come on when you put an aftermarket Intake on it? (i.e. Injen or AEM, ect.). The codes on mine are P0125 and P0171 (O2 sensor and engine coolant temp.). Anyone else have this problem?

Re: who has a check engine light on after intake? [Re: jenn1356] #177706 May 12, 7:31pm May 12, 7:31pm
Joined: Apr 2004
Posts: 162
Kentucky
jenn1356 OP
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2000 Toyota Celica GT
jenn1356 OP
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Now don't everybody answer all at once or anything... rofl

Re: who has a check engine light on after intake? [Re: jenn1356] #177707 May 12, 7:34pm May 12, 7:34pm
Joined: Aug 2002
Posts: 1,096
818, CA
Eman
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Eman
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pretty common...clean ur MAF sensor...should solve things right up


Ima TuRD fa life
Re: who has a check engine light on after intake? [Re: Eman] #177708 May 12, 7:54pm May 12, 7:54pm
Joined: Sep 2002
Posts: 3,030
Bay Area, CA
Erick
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Erick
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^^^ yah agreed thumbsup i'll see if i can find the thread that says how you clean it grin


LNK
"you only need something when you know it exists..then it becomes a want"
Re: who has a check engine light on after intake? [Re: Eman] #177709 May 12, 7:57pm May 12, 7:57pm
Joined: Sep 2002
Posts: 3,030
Bay Area, CA
Erick
Bread Fishing..
2001 Toyota Celica GT
Erick
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wooo whoo found it.. thumbsup

Cleaning the MAF Sensor


Linked Image


LNK
"you only need something when you know it exists..then it becomes a want"
Re: who has a check engine light on after intake? [Re: Erick] #177710 May 12, 8:12pm May 12, 8:12pm
Joined: Apr 2004
Posts: 162
Kentucky
jenn1356 OP
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thanks! thumbsup

Re: who has a check engine light on after intake? [Re: jenn1356] #177711 May 12, 8:21pm May 12, 8:21pm
Joined: Oct 2003
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Smog City LA
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I had the CEL go on even tho I disconnected the negative battery terminal before I started. Make sure all hoses and ports are plugged.

Re: who has a check engine light on after intake? [Re: xXMaGNuSXx] #177712 May 12, 9:10pm May 12, 9:10pm
Joined: Aug 2002
Posts: 1,096
818, CA
Eman
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Eman
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its amazing what a BIG difference it makes when ur MAF sensor is dirty...your throttle response get sooo fugged up..


Ima TuRD fa life
Re: who has a check engine light on after intake? [Re: Eman] #177713 May 12, 11:53pm May 12, 11:53pm
Joined: Sep 2003
Posts: 955
Eastern Ontario, Canada
00GTShope
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^^^^ I've been thinking of doin that for ages. Lately everyone is talkign about cleaning the MAF. I have Injen RD cold air and have never had a CEL but I think I might do it anyway. confused

Re: who has a check engine light on after intake? [Re: 00GTShope] #177714 May 13, 12:04am May 13, 12:04am

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I just bought an Injen SRI and have the cel (p0171) light come on. it goes away than comes back sometimes and i've cleanend MAF, throttle body, ran fuel injector cleaner thorough, and cheked all hoses. confused

Re: who has a check engine light on after intake? #177715 May 13, 6:43am May 13, 6:43am
Joined: Apr 2004
Posts: 162
Kentucky
jenn1356 OP
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2000 Toyota Celica GT
jenn1356 OP
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Posts: 162
Kentucky
I think the 0171 code is because of the Intake. If the Intake is cold-hence "cold-air Intake", it makes the computer think that there is a hole in the Intake so the check engine light will come on. If this is the case, the light will come on during cool nights. (too much cold air). It doesn't hurt the engine, it's just specified in the computer to tell you when something isn't "factory". I've driven mine like this for 2 years and it's been okay. I'm just angry because the computer is saying the O2 sensors are bad, and I just put brand new ones on them!

Re: who has a check engine light on after intake? [Re: jenn1356] #177716 May 13, 8:52am May 13, 8:52am
Joined: Mar 2003
Posts: 584
Justice
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Justice
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I've had mine on since oct. i kept reseting the cpu but it came back on. so i gave up.

Re: who has a check engine light on after intake? [Re: Justice] #177717 May 13, 9:40am May 13, 9:40am
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Maryland
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Interesting that most of (not all) the problem posts are from Injen owners, one K&N in there. Is there less of a problem with AEM owners.

I wonder if the placement of the MAF sensor has something to do with it? On Injen and K&N the MAF sensor is fairly close to the throttle body, but on AEM this is not the case. AEMs placement of the sensor is much farther out on the pipe. hmmmmmmmmm.

Re: who has a check engine light on after intake? [Re: Gen7fan] #177718 May 13, 9:44am May 13, 9:44am
Joined: Oct 2003
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DSM, IA
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ive heard that k&n uses oiled filters and thats what trashes the maf, Is this true?


Where did my sig go? help me find it..........
Re: who has a check engine light on after intake? [Re: silverOOgts] #177719 May 13, 10:22am May 13, 10:22am
Joined: Apr 2003
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Maryland
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Originally Posted by silverOOgts
ive heard that k&n uses oiled filters and thats what trashes the maf, Is this true?


I've read those posts to, I think those people are using to much oil, even if they don't know they are. TRD filter is made be K&N so it works the same way, I've never had a problem. You should use a small amount of oil and let it wick through, spot oil any missed areas, not go all crazy with it.

Re: who has a check engine light on after intake? [Re: Gen7fan] #177720 May 13, 12:49pm May 13, 12:49pm
Joined: Jul 2003
Posts: 500
Salisbury, MD
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If your CEL is still on you can try to disconect you battery for about 5-10min and your ECU will reset itself.


I'm gonna take your little Civic. Dust it off. Turn it sideways and stick it straight up you candy A*s.
Re: who has a check engine light on after intake? [Re: GTSHYPR] #177721 May 13, 1:09pm May 13, 1:09pm
Joined: Apr 2004
Posts: 162
Kentucky
jenn1356 OP
Member
2000 Toyota Celica GT
jenn1356 OP
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Joined: Apr 2004
Posts: 162
Kentucky
yeah, I have a code reader, so I keep erasing it- thumbsup

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