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Slightly rough idle?

This is a discussion on Slightly rough idle? within the General Help forums, part of the LSx Technical Help Section category; Originally Posted by Aetos Scanned the codes and no codes were thrown I think the first thing I'm gonna do ...

  1. #21
    Resident Mississippian BdAsBrd01's Avatar
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    Quote Originally Posted by Aetos View Post
    Scanned the codes and no codes were thrown

    I think the first thing I'm gonna do is change out the 02s... now.. wheres the best price for 02s?


    edit:

    Without throwing any codes whats the thing that could affect the mileage the most? (shouldn't bad 02's throw codes?)
    Dude-I'm sure you already know this but to save someone else the time and irritation; our cars have 4 O2 sensors. When I had mine changed the kid didn't know and only changed 3. So I had to take it back and get the 4th replaced (free). My car was idling rough too, at about the same miles your car has. The plugs and O2 change helped but it still isn't completely smooth when idling. I think its a LS1 thing too. Good Luck!

  2. #22
    Member Aetos's Avatar
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    One more question: How hard is it to change the front 02's on jacks? Haven't had a chance to see exactly where they are located. How long would the replacement on jacks usually take?

  3. #23
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  4. #24
    400rwhp::370rwtq Lucky 13's Avatar
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    try doing seafoam -- just search, or go have a good fuel injection intake cleaning, should only be about 100 - 120 for the good stuff at a local repair shop

  5. #25
    Junior Member BirdFlewLS1's Avatar
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    took me 5-10 minutes...no problems. But i would also change the fuel filter, air filter, change oil, change plugs and wires, and then clean the MAF. I have always told myself that it doesnt hurt to spend the money on somthing that wears out. Maintence is not bad...just do it. may take some time, but atleast its off the list. And I also believe its an LSX thing.. Some people just worry about there cars to much, which isnt all bad. I have Weiland intake, heads, ported MAF and Throttle body, LT, and 4.11 gears...and still pull off 21mpg on interstate, and about 16-18 in town depending on how much i play.

  6. #26
    Member Aetos's Avatar
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    I just ordered new 02s, will be installed on sunday if they come in time.

  7. #27
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    So how'd you make out? Did the O2's help your problem?

    Where did you order them from, btw?

  8. #28
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    puter
    2002 ss camaro

    i have a 2002 ss camaro it is missing at low rpm and when im cruising in 5th gear it will miss what could be the problem

  9. #29
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    puter
    2002 ss camaro

    i have a 2002 ls1 camaro its doin the same thing but when im in 5th gear it will miss only at low rpms and the scanner said my 7 & 8 cylinder is misfiring what could it be.

  10. #30
    Spaz is My Mentor SMWS6TA's Avatar
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    check plug wires & plugs. It could be they are not connected correctly or those plugs never been changed. Some ppl are lazy and hate to deal with the last 2.

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