sat 2 months, now no idle 00' T/A - LS1TECH

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sat 2 months, now no idle 00' T/A

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Old 12-20-2008, 02:47 PM   #1
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Default sat 2 months, now no idle 00' T/A

went to start trans-am thats sat since early october and after finally getting it jump started it won't idle. i need to keep my foot on the gas or it surges and dies. i can set the idle with the pedal as low as 700 rpm, but as i let off from there it surges up to 1200 and back down, and when i back fully off it'll die. last time it was out i didnt have any trouble, took it for a ride for 20 some minutes and parked it. i let it run untill it got to operating temp this time, oil pressure was good and everything so i dont think it was a lifter leak-down type issue. from ice cold to operating temp nothing changed as far as it wanting to die on me.
any thoughts?
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Old 12-20-2008, 02:57 PM   #2
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My first thought it's because of the battery voltage, just needs a few starts for the PCM to relearn the idle. Same thing happens when you reset the PCM.
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Old 12-20-2008, 03:03 PM   #3
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OK gonna go out and restart.............this is nuts. I usually start and driver around every 2-3 weeks in the winter with no issues, this just came out of nowhere
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Old 12-20-2008, 03:30 PM   #4
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Quote:
Originally Posted by 2001NBMZ28 View Post
My first thought it's because of the battery voltage, just needs a few starts for the PCM to relearn the idle. Same thing happens when you reset the PCM.
Good call went back out and restarted and everything was fine. thx!
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