Just bought a 99 Cobra, tune up tips?

Discussion in 'SVT Forum' started by btsclan, Oct 30, 2008.

  1. btsclan New Member

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    I just bought a 87000 mile 99 cobra that is in great shape, inside and out. The guy I bought it from didnt drive it much and I can tell it needs a tune up but want some tips from other 99 cobra owners.

    Other then just a tune up( oil change, spark plugs etc) what else should be done to it. Injector cleaning? Throttle body cleaning? etc etc

    Any tips would be great on what I should to go clean it up and make it run a little better, it missing from time to time at high rpm around 5k and the idle fluctuates a little.

    Thanks,
    Steven
    btsclan, Oct 30, 2008
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  2. hvcobra99 New Member

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    In my opinion

    I would do all that you have mentioned above and maybe even consider investing in a chip by diablo(Pred) or SCT and get it dyno tuned
    hvcobra99, Nov 5, 2008
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  3. SVT32VDOHC waiting for the next hack atta

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    Change the plugs on a stone cold engine! If it's warm, you risk pulling threads out of the head because they are aluminum.

    Change the oil and filter.

    Change the antifreeze, flush and refill.

    Change the fuel filter.

    Run some injector cleaner through the system.

    Change the PCV valve.

    Things such as oxygen sensors, EGR valves etc...change as necessary, for instance...if the SES light was on.

    Change the transmission fluid. Regular ATF fluid goes back in there.

    Change the diff fluid. I've changed rear end fluid on 8.8 straight axles. I'm not sure how different it is to do with IRS. I don't know if if holds more, or less.
    SVT32VDOHC, Nov 5, 2008
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  4. COBRA90GT Moderator

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    Don't forget to bleed the brakes as well...
    COBRA90GT, Nov 6, 2008
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  5. Black*Death New Member

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    I would think about cleaning the MAF. Also, I use antiseize on plug threads. Don't know if will help but don't think it hurts anything. I would consider getting a hand held tuner and datalogging some engine parameters. May help explain "miss" at high RPM's.
    Black*Death, Dec 23, 2008
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  6. GToddyT5 Founding Member

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    I would Seafoam it. Also, be careful on the plugs, I blew one of mine out of the head shortly after a change.
    GToddyT5, Dec 23, 2008
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