355 tpi with t5 how to make it idle lower then 1100
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From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
355 tpi with t5 how to make it idle lower then 1100
Hey everyone i got a 88 gta with a 355 tpi i built i recently did a t5 swap an while i had it running at idle it doesnt wanna idle any lower then 1100 i wanna get it down to 700-800 rpm. Yes im still running the auto prom an ecm but i have a couple of my friends that have the same conversion an they got there idle down to about 800 rpm without a tune dont know how but they did. Maybe my timing is to advanced what should basic timing before top dead center be for the t5 setup maybe this will work ????
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From: San Antonio TX
Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: 355 tpi with t5 how to make it idle lower then 1100
Hey everyone i got a 88 gta with a 355 tpi i built i recently did a t5 swap an while i had it running at idle it doesnt wanna idle any lower then 1100 i wanna get it down to 700-800 rpm. Yes im still running the auto prom an ecm but i have a couple of my friends that have the same conversion an they got there idle down to about 800 rpm without a tune dont know how but they did. Maybe my timing is to advanced what should basic timing before top dead center be for the t5 setup maybe this will work ????
Joined: Apr 2005
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: 355 tpi with t5 how to make it idle lower then 1100
Lottsa possibilities
Have you tested for and confirmed no vac leaks anywhere: a major cause of high idle
Have you set the min air and idle speed ( the proper way , not just playing with the screw on the TB ) correctly ?
Cleaned the TB and IAC recently? if the IAC is gunked up it can't operate properly to control the idle
Have you tested for and confirmed no vac leaks anywhere: a major cause of high idle
Have you set the min air and idle speed ( the proper way , not just playing with the screw on the TB ) correctly ?
Cleaned the TB and IAC recently? if the IAC is gunked up it can't operate properly to control the idle
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Joined: Jun 2010
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From: Montgomery, AL
Car: 84 El Camino
Engine: 360 TPI
Transmission: 700R4
Axle/Gears: 3.42 + Truetrac, Moser 28 Spline
Re: 355 tpi with t5 how to make it idle lower then 1100
Hey everyone i got a 88 gta with a 355 tpi i built i recently did a t5 swap an while i had it running at idle it doesnt wanna idle any lower then 1100 i wanna get it down to 700-800 rpm. Yes im still running the auto prom an ecm but i have a couple of my friends that have the same conversion an they got there idle down to about 800 rpm without a tune dont know how but they did. Maybe my timing is to advanced what should basic timing before top dead center be for the t5 setup maybe this will work ????
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