high idle on 5.7tpi,need advice
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Junior Member
Joined: Dec 2010
Posts: 27
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From: broomfield ,colorado
Car: 86 trans am gta,and 88 corvette
Engine: TA-355ci tpi,vette 383 tpi
Transmission: 5spd manual,700r4
Axle/Gears: borgwarner 370 posi,vette is stock
high idle on 5.7tpi,need advice
high idle on 5.7 tpi ? i have a fresh rebuild tpi 350 new sensors new distributor,new injectors,same ecm and prom,set tps and timing.never touched idle speed screw. still has factory plug in hole.fuel presure 43-45psi,it idles around 1500-1700 rpms i have tried everything to try and bring it down.when i drive it up the street it seams to run ok for a minute or two then it starts to choke out and dies.starts rite back up and same thing.pops a few times before it dies.iac is also new.check engine lite on all the time.and the fuel pump is running all the time.mass air was good before i rebuilt the engine.any input from anyone thats experianced this issue would be appreciated.thank you
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Joined: Mar 2002
Posts: 2,516
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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: high idle on 5.7tpi,need advice
Check for vacuum leaks and air leaks around the plenum and runners. You may have put the gaskets on backwards.
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Hello, Michael
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Aug 20, 2015 03:19 PM
