PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

high idle when slowing down.

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Old May 7, 2005 | 03:27 PM
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Default high idle when slowing down.

my car likes to hang out at about 2000 rpm when i am slowing down or at a light, it sits at about 2000 rpm for about 2 seconds and then will come back down to 1000 in about 4-5 seconds, or else i'll be slowing down and instead of idleing high it drops to like 500 or lower and almost dies on me, would this be a tuning issue? i need to run ls1 edit ?
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Old May 7, 2005 | 03:31 PM
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Yes this is a tuning issue. Need to work on the ve table and other idle tables to get it to fall correctly and stick.
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Old May 7, 2005 | 10:38 PM
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there is a big thread on this with idle tuning, check it out im sure it will help u
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Old May 8, 2005 | 04:44 PM
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Did this just happen out of the blue? Not being a tuning guru, the first thing I would look for would be a sticking butterfly in the TB.
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Old May 8, 2005 | 07:47 PM
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did u drill your TB at all?
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Old May 8, 2005 | 10:36 PM
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Originally Posted by foff667
did u drill your TB at all?

no have not drilled the tb. the car did not do this when i first got it, but had to pull the motor due to a oil pump fail and stuck a lifter, cam hit and exploded it. i have check a couple times for vacuum leak but everything seems fine. the car also runs rich as hell right now, so is this something LS1 edit will take car of?
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Old May 8, 2005 | 11:11 PM
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You need to adjust the VE table. If the car runs rich then there is too much fuel. I bet this will take care of your problems.
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