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check engine light chaos!!!!!!

This is a discussion on check engine light chaos!!!!!! within the Computer & Tuning forums, part of the LSx Technical Help Section category; i have a 2000 ws6 trans am with the following mods cam, intake, headers, cool air intake, rear 02 simulators. ...

  1. #1
    Junior Member banndit81's Avatar
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    2000 trans am ws6

    check engine light chaos!!!!!!

    i have a 2000 ws6 trans am with the following mods cam, intake, headers, cool air intake, rear 02 simulators. and i can't for the life of me keep the check engine light off. i have a obd2 scanner and have fixed some of the codes and then more and or different ones keep coming up mostly the codes are really hard to list cause they are different almost everytime i plug in my scanner any ideas?

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    Junior Member banndit81's Avatar
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    2000 trans am ws6

    im getting obd2 codes= p0102 thats for the MAF sensor and im not getting 12 volt supply to it and i have checked the wires and didn't see a problem any ideas? also code= p0803 thats for 1-4 upshift solenoid malfuntion but i have a 6 speed trans isn't that code for an auto trans? im stumped on this i would appreciate any input thanks..................jim

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    Check the ENG SEN fuse under the hood and see if it's blown. P0803 is the M6 skip shift, it's on the same circuit as the MAF.
    Last edited by 2001NBMZ28; 08-11-2009 at 08:42 AM.

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    Junior Member banndit81's Avatar
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    thanks alot sure enough thats what it was i checked fuses with a multi meter and didn't catch it then when you mentioned to check that exact fuse i pulled it and it was blown i don't know how i missed it. but im reading 0 codes for now hope it stays that way thanks again.................

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    If it keeps blowing look for an arcing/melted 02 harness wire somewhere on the headers, they're also on that circuit, along with the reverse lockout solenoid.

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    Junior Member banndit81's Avatar
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    2000 trans am ws6

    thanks for the input
    salute to the 5.7L mustang eater

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    Junior Member banndit81's Avatar
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    2000 trans am ws6

    it's at it again

    i had 0 codes for the first time and then drove about 13miles now i have 4 codes p0134 = o2 sensor circuit no activity bank 1 sensor 1 p0102 = maf sensor low input p103 = maf high output p0155 = 02 sensor heater malfuntion bank 2 sensor 1 ......this thing is really getting on my nerves i want it fixed and i can't seem to keep that freaking check engine light at bay...............................HELP!!!!!!!!!!!! !!!!!!!!!!!!! (are the rear o2 sensors interchangeable with the front?)

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    Did the fuse blow again?

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    Quote Originally Posted by 2001NBMZ28 View Post
    Did the fuse blow again?
    my dollar says yes

  10. #10
    Junior Member banndit81's Avatar
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    no it didn't blow again.....

  11. #11
    Junior Member banndit81's Avatar
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    like you said im gonna double check all the wires by the headers im thinking that could be the problem

  12. #12
    Junior Member banndit81's Avatar
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    i think i got it

    well i went through and taped all the wires by the headers. and i put different o2 sensors upfront. (i had laying around) and drove about 50 miles now i have 0 codes i think the 02's i had in there must have been the problem.

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