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September 15th, 2008, 08:35 PM
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iac
is the iac suppose to be fluctuating in park when fully warmed up? mine goes from 15,17,25,27,19,15,17,21 ect. and my idle is for crap. i have been fighting this idle problem for years after rebuild. my o2's fluctuate bad as well from 200's to 700's at idle and the cc's count up slow to 255 then repeat but i have erics chip and it should lock in at idle around 780 to 800's. mine only does it when i put it in park.
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1987 Buick Grand National.BoostJunkie 30 over 109, Forged Pistons, 204/214 cam, BB.TE-60, 50# MSD Inj., Razors Alky kit, 24 Row Stretched Intercooler, THDP. LS-1 Maf ,Translator, Ultraflows, Hotwired Walbro 340, Billit Regulator, Rjc valve and plate, BoostJunkie 200r4, Pats 3200 10" lock up, 93 Alky Tweak Chip. Vacuum Brakes with S-10n's, Alum. Brake Drums. Poly Body Mounts. Front/Rear Braces. New Front Suspension, Red UMI Tubular Rears. Street Stars. Mickey Drags 275 60's. Rear Air Bags. POSTONS TRUNK KIT  best ET ON TA-49 IS 11.62@114.00. 1.609 60' 25# of boost 27/24. 93 octane and alky 9# launch. Brian Roman
    
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September 16th, 2008, 01:01 PM
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make sure car is warmed up, then adjust the screw to get 20 /25 IAC. it may fluctuate a little at first, but should settle. then re-adjust your tps between 4.2 / 4. 6.
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September 16th, 2008, 02:00 PM
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Quote:
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1987 Buick Grand National.BoostJunkie 30 over 109, Forged Pistons, 204/214 cam, BB.TE-60, 50# MSD Inj., Razors Alky kit, 24 Row Stretched Intercooler, THDP. LS-1 Maf ,Translator, Ultraflows, Hotwired Walbro 340, Billit Regulator, Rjc valve and plate, BoostJunkie 200r4, Pats 3200 10" lock up, 93 Alky Tweak Chip. Vacuum Brakes with S-10n's, Alum. Brake Drums. Poly Body Mounts. Front/Rear Braces. New Front Suspension, Red UMI Tubular Rears. Street Stars. Mickey Drags 275 60's. Rear Air Bags. POSTONS TRUNK KIT best ET ON TA-49 IS 11.62@114.00. 1.609 60' 25# of boost 27/24. 93 octane and alky 9# launch. Brian Roman
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September 16th, 2008, 03:19 PM
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Quote:
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1987 GN, 1986 T, 1984 Hurst Oldsmobile with 1987 GN drivetrain
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September 16th, 2008, 11:07 PM
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you may want to change iac with a new 1. 02's at idle will vary, jump up/down. don't matter who's chip you use. they only become stable at wot. that's why we shoot for 750/800 02s, at wot.
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September 17th, 2008, 11:29 AM
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thanks will try that i thought that erics chip locks in at idle that is what he told me
__________________
1987 Buick Grand National.BoostJunkie 30 over 109, Forged Pistons, 204/214 cam, BB.TE-60, 50# MSD Inj., Razors Alky kit, 24 Row Stretched Intercooler, THDP. LS-1 Maf ,Translator, Ultraflows, Hotwired Walbro 340, Billit Regulator, Rjc valve and plate, BoostJunkie 200r4, Pats 3200 10" lock up, 93 Alky Tweak Chip. Vacuum Brakes with S-10n's, Alum. Brake Drums. Poly Body Mounts. Front/Rear Braces. New Front Suspension, Red UMI Tubular Rears. Street Stars. Mickey Drags 275 60's. Rear Air Bags. POSTONS TRUNK KIT best ET ON TA-49 IS 11.62@114.00. 1.609 60' 25# of boost 27/24. 93 octane and alky 9# launch. Brian Roman
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