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Starting after storing

This is a discussion on Starting after storing within the General Help forums, part of the LSx Technical Help Section category; I try to drive the bird once a week. Sometimes it's more like once every two weeks. For some reason ...

  1. #1
    Member 1TA LS1's Avatar
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    2001 Pontiac Trans Am WS6

    Starting after storing

    I try to drive the bird once a week. Sometimes it's more like once every two weeks. For some reason when I fire it up after a week or two of sitting, it won't idle, then dies. But when I start it the second time it starts right up.

    Am I doing something wrong???
    Last edited by 1TA LS1; 07-19-2009 at 10:34 PM.
    01 TA WS6: Volant CAI, custom ram-air baffle mod, custom borla, BMR-(SFC, LCA, LCA reloc, PH rod,TQ Arm), UMI swaybars, Eibach + Bilsteins, TTM Anth, SS brakelines, 160 deg therm, 3.73 gears, Yank 3400 stall, Yank Crsmbr, Hayden 24k, Trans Go shiftkit, ported TB + MAF...soon to be cam/heads

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    Member DaddySS's Avatar
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    Are you turning the ignition to "on", waiting until the pump stops and the chime stops before starting?

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    Member 1TA LS1's Avatar
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    2001 Pontiac Trans Am WS6

    Quote Originally Posted by DaddySS View Post
    Are you turning the ignition to "on", waiting until the pump stops and the chime stops before starting?
    Yes. Always.

    Forgot to mention, that I disconnect the battery when it's stored.
    Last edited by 1TA LS1; 07-21-2009 at 08:54 PM.

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    Single Malt rbob93's Avatar
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    Quote Originally Posted by 1TA LS1 View Post
    Forgot to mention, that I disconnect the battery when it's stored.
    There's the problem.
    You re-set the computer when you pull the battery.

  5. #5
    Member 1TA LS1's Avatar
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    2001 Pontiac Trans Am WS6

    Quote Originally Posted by rbob93 View Post
    There's the problem.
    You re-set the computer when you pull the battery.
    How does re-setting the computer have to do with starting?

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    cutting power to the computer resets it, so your car has to re-learn the air/fuel curve every time you are starting it.

  7. #7
    Something Diabolical... chuckie669's Avatar
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    2000 C5 Torch Red

    When the battery gets unhooked the first restart will be very weak, it may even die. Airflow learning is slower than fuel, and may take 25-35 miles of driving before fully learned back out.

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    Senior Member Too Fast's Avatar
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    Yep, the PCM has to relearn how to idle the car. That's why your car has issues sometimes. If it only sits 2-3 weeks, no need to disconnect the battery. More than a month tho, it's a good idea to disconnect but not really mandatory.

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    2001 Pontiac Trans Am WS6

    Is it bad for the engine when it does this? And does this affect my tune or will it just take a moment to reset?

  10. #10
    Senior Member Too Fast's Avatar
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    Shouldn't affect any tune. Not really bad for the engine, but if you don't need to disconnect the battery, don't do it. Like I said, unless it will sit for more than 4-5 weeks, there really is no need to disconnect the battery. If you are that concerned about battery life, it would be better to get a "battery tender" charger, you can leave it connected all the time and it will only do a trickle charge on the battery when/if it is needed.

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    Member 1TA LS1's Avatar
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    2001 Pontiac Trans Am WS6

    I am going to look into the battery tender. Someone had mentioned it to me before. I was only concerned about battery life cause my old battery died and I replaced it with a Optima battery. Thanks for the help and info all!

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    Retired NOT tired SteveC's Avatar
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    Quote Originally Posted by rbob93 View Post
    There's the problem.
    You re-set the computer when you pull the battery.
    I agree, I have a garage queen that I drive 1 a week, or 1 every 2 weeks, I do not disconnect the battery, and have no trouble at start up.

    I replace my battery every 3 years to be on the safe side (sulfiding the plates).

    SteveC

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    2001 Pontiac Trans Am

    Just got a tune for my MS3 and battery went dead one month after. Put a new battery in and since it resets the computer the car will not idle and now i guess i will have to take it back to the damn shop!

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