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Check engine problem pls help #199832 Jun 15, 10:42am Jun 15, 10:42am
Joined: Oct 2003
Posts: 254
maryland
2000 black Toyota Celica GT
aykut OP
Member
2000 Toyota Celica GT
aykut OP
2000 black Toyota Celica GT
Member
2000 Toyota Celica GT

Joined: Oct 2003
Posts: 254
maryland
Check engine problem pls help
i have a serious check engine light problem. I hope somebody can help me . Here is the story

I have 5zigen catback exhaust system on my gt, everything was fine until las month. I was driving on highway and speeding around 80 mls , then the check engine came on and went to a mechanice and he reset the ecu and said it is fine. When i use my car in the city no check engine light because i am not driving over 50 but when i speed up , it lights on . So , i went to a different mechanic and he said we have to replace the oxygen sensor and he replaced it after 2 hours , i wanted to try the car and speed up and it came on again . He told me to go the dealership but i know if i go to dealership , they will start to complain , you have aftermarket parts on ur car etc etc . The code is 171 for the check engine light , anybody has any idea what to do ? i am thinking to change the whole exhaust system but it is weird why the check engine comes on when i am speeding and it doesnot come on when driving normally ? thanks for any help

Re: Check engine problem pls help [Re: aykut] #199833 Jun 15, 10:48am Jun 15, 10:48am
Joined: Jan 2004
Posts: 5,129
Philadelphia, PA
Sultan
Speed Omen
2002 Toyota Celica GT
Sultan
Speed Omen
2002 Toyota Celica GT

Joined: Jan 2004
Posts: 5,129
Philadelphia, PA
I seriously doubt it has anything to do with your exhaust... do you have a CAI?

Re: Check engine problem pls help [Re: Sultan] #199834 Jun 15, 11:01am Jun 15, 11:01am
Joined: Sep 2003
Posts: 1,261
1228 celica blvd
2000 arrest me red Toyota Celica GT
rem
Specialist
2000 Toyota Celica GT
rem
2000 arrest me red Toyota Celica GT
Specialist
2000 Toyota Celica GT

Joined: Sep 2003
Posts: 1,261
1228 celica blvd
mine does this too..

Re: Check engine problem pls help [Re: rem] #199835 Jun 15, 12:38pm Jun 15, 12:38pm
Joined: Feb 2004
Posts: 10
bay area
2000 carbon blue Toyota Celica
stevenhom
Member
2000 Toyota Celica
stevenhom
2000 carbon blue Toyota Celica
Member
2000 Toyota Celica

Joined: Feb 2004
Posts: 10
bay area
try cleaning da MAF sensor thats a common problem i learned it the hard way...$110 for the dealer to tell me that the maf sensor was dirty

Re: Check engine problem pls help [Re: stevenhom] #199836 Jun 15, 1:16pm Jun 15, 1:16pm
Joined: Oct 2003
Posts: 254
maryland
2000 black Toyota Celica GT
aykut OP
Member
2000 Toyota Celica GT
aykut OP
2000 black Toyota Celica GT
Member
2000 Toyota Celica GT

Joined: Oct 2003
Posts: 254
maryland
i have an AEM 2 nd gen Intake but havent installed yet and now scared to install it because it will cause problem . I get really sick and tired of that stupid check engine light codes and last attempt , will clean the maf . i hope that can solve it

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