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Installed Doug Thorley headers and a flowmaster exhaust. now runs like shit

Discussion in 'Performance and Tuning' started by 97yota4wd, Jun 24, 2011.

  1. Jun 24, 2011 at 4:52 PM
    #1
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    Eric
    Mesa, AZ
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    alot of metal, small engine, decent travel.
    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc
    so i installed doug thorley headers last night, and i had a exhaust leak but didnt have time to fix it, drove to work and dropped it off at a muffler shop, about 1/4 mile before i got to the muffler shop my check engine light came on. but they fixed my exhaust leak and put on a flow master exhaust. i got my truck back and it started to run like shit, idled rough, was noticebly slower.

    so i went to o reileys to see what the check engine light was for, he said it was a 02 sensor reading rich.

    he told me i can try to unplug the negative terminal of the battery and let it sit for 15 minutes or so and put it back on and it might fix it might not.

    he also said if i drive it for a couple days the system could remap its self and run okay.

    do you guys have any ideas/thoughts about this? thanks!
     
  2. Jun 24, 2011 at 4:54 PM
    #2
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    Does the DT header for your truck delete the cat?
     
  3. Jun 24, 2011 at 5:36 PM
    #3
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    no it doesnt
     
  4. Jun 24, 2011 at 5:41 PM
    #4
    whippersnapper02

    whippersnapper02 Well-Known Member

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    O2 sensor could have been damaged while swapping it over to the new pipe.
     
  5. Jun 24, 2011 at 5:43 PM
    #5
    BFA

    BFA Nuttier than squirrel shit.

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    maybe.. i dont see how we would have damaged the sensor cause we didnt drop it or anything
     
  6. Jun 24, 2011 at 5:45 PM
    #6
    BFA

    BFA Nuttier than squirrel shit.

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    also eric id check back with that shop and ask if they even checked everything after the install cause it was fine last night and now it doesnt? i would think they should be making it right you know?
     
  7. Jun 24, 2011 at 5:46 PM
    #7
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc

    yeah i know its pissing me off. im going to put the negative back on the battery and drive it in a couple hours and see if that fixes it....

    is there anything else i can do to see if the code will not pop up again?
     
  8. Jun 24, 2011 at 5:47 PM
    #8
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc

    well the ceck engine light came on as i was pulling INTO the shop so it couldnt have been anything they did right?

    they didnt touch the o2 sensors or anything
     
  9. Jun 24, 2011 at 5:47 PM
    #9
    BFA

    BFA Nuttier than squirrel shit.

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    well call the shop. dont they close at 6?
     
  10. Jun 24, 2011 at 5:48 PM
    #10
    BFA

    BFA Nuttier than squirrel shit.

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    ohh. i didnt see that part. i dunno. i got extra o2 sensors if you wanna tr those maybe?
     
  11. Jun 24, 2011 at 5:52 PM
    #11
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    oh fuck yeah you do!!!!


    let me see if this fixes my problem then i will let you know man!
     
  12. Jun 24, 2011 at 5:55 PM
    #12
    BFA

    BFA Nuttier than squirrel shit.

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    the cel on my 02 is on cause of some catalyst bs that i dont care about fixing and i think there was another code but im not sure. im positive the sensors on there are ok so i can pull one off my 03 for you which i know for a fact is ok. just gotta make sure the connections are the same and all that bs
     
  13. Jun 24, 2011 at 6:06 PM
    #13
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    alot of metal, small engine, decent travel.
    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc
    you know the electrical tape job we did? yeah didnt work for shit.
     
  14. Jun 24, 2011 at 6:10 PM
    #14
    BFA

    BFA Nuttier than squirrel shit.

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    yeah didnt think so.. i still told you to replace that asap
     
  15. Jun 24, 2011 at 9:19 PM
    #15
    pizza

    pizza Active Member

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    Stock right now.
    Kinda what I'm thinking.. Do stock ECU's "re-program" themselves or does the MAF and o2 sensors just do what they do? By that I mean, read whats coming in and going out and automatically adjust air/fuel?
     
  16. Jun 24, 2011 at 9:19 PM
    #16
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc
    well i figured out that hose is my dam problem. its a dealer part, calling them in the AM
     
  17. Jun 24, 2011 at 9:20 PM
    #17
    PLC721

    PLC721 Well-Known Member

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    4cy, bigger tires, no back pressure, i know oliver lost a lot of bottom end power before he re-geared
     
  18. Jun 24, 2011 at 9:21 PM
    #18
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    Idk... but its cause my intake hose has a hole in it so its acting like it has a really bad vaccum leak:)
     
  19. Jun 24, 2011 at 9:21 PM
    #19
    PLC721

    PLC721 Well-Known Member

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    ohhh gotvha
     
  20. Jun 24, 2011 at 9:22 PM
    #20
    97yota4wd

    97yota4wd [OP] Well-Known Member

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    alot of metal, small engine, decent travel.
    caged, camburg long travel, 50t leafpack (soon to be installed) light rack over cab, 5pt harnesses etc
    i got a exhaust now:)
    so it has way more back pressure than it did

    wrapped duct tape around the tube to get me home and ran great!
     
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