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Joined: Apr 2004
Posts: 162
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2000 Toyota Celica GT
Member
2000 Toyota Celica GT
Joined: Apr 2004
Posts: 162
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?

Last edited by jenn1356; May 12, 2004 7:07pm.

Joined: Apr 2004
Posts: 162
Member
2000 Toyota Celica GT
Member
2000 Toyota Celica GT
Joined: Apr 2004
Posts: 162
Now don't everybody answer all at once or anything... rofl

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Black Sheep
2000 Toyota Celica GT
Black Sheep
2000 Toyota Celica GT
Joined: Aug 2002
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pretty common...clean ur MAF sensor...should solve things right up

Joined: Sep 2002
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Bread Fishing..
2001 Toyota Celica GT
Bread Fishing..
2001 Toyota Celica GT
Joined: Sep 2002
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Likes: 1
^^^ 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"

Joined: Sep 2002
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Bread Fishing..
2001 Toyota Celica GT
Bread Fishing..
2001 Toyota Celica GT
Joined: Sep 2002
Posts: 3,028
Likes: 1
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"

Joined: Apr 2004
Posts: 162
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2000 Toyota Celica GT
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2000 Toyota Celica GT
Joined: Apr 2004
Posts: 162
thanks! thumbsup

Joined: Oct 2003
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hookah-meister
2000 Toyota Celica GT
hookah-meister
2000 Toyota Celica GT
Joined: Oct 2003
Posts: 973
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.

Joined: Aug 2002
Posts: 1,093
Black Sheep
2000 Toyota Celica GT
Black Sheep
2000 Toyota Celica GT
Joined: Aug 2002
Posts: 1,093
its amazing what a BIG difference it makes when ur MAF sensor is dirty...your throttle response get sooo fugged up..

Joined: Sep 2003
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Senior Member
2000 Toyota Celica
Senior Member
2000 Toyota Celica
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Posts: 955
^^^^ 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

Anonymous
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Anonymous
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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

Joined: Apr 2004
Posts: 162
Member
2000 Toyota Celica GT
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2000 Toyota Celica GT
Joined: Apr 2004
Posts: 162
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!

Joined: Mar 2003
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Senior Member
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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.

Joined: Apr 2003
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ThE iRoN mAiDeN
2003 Toyota Celica GT
ThE iRoN mAiDeN
2003 Toyota Celica GT
Joined: Apr 2003
Posts: 1,899
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.

Joined: Oct 2003
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intoxicated
2000 Toyota Celica GTS
intoxicated
2000 Toyota Celica GTS
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ive heard that k&n uses oiled filters and thats what trashes the maf, Is this true?

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ThE iRoN mAiDeN
2003 Toyota Celica GT
ThE iRoN mAiDeN
2003 Toyota Celica GT
Joined: Apr 2003
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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.

Joined: Jul 2003
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Bruce Leroy
2002 Toyota Celica GTS
Bruce Leroy
2002 Toyota Celica GTS
Joined: Jul 2003
Posts: 500
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.

Joined: Apr 2004
Posts: 162
Member
2000 Toyota Celica GT
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2000 Toyota Celica GT
Joined: Apr 2004
Posts: 162
yeah, I have a code reader, so I keep erasing it- thumbsup

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