Well every time I start my truck the rpm's jump around bad some times even die but rarely . And ive been trying to fix it with no luck. Ive tried more timing, spark, start up flash ups i just dont know how to do it so if anyone with tuning experience can help me out that would be great.
Every thing else in my tune is great except the start up. but once it it stops surging the rpm's steady.
is it everytime u start it or just when the motor is cold?
Yes both hot and cold.
do you use hptuners?
if so post up your tune
I use efi live im not sure how many people use efi live but i get a file up.
here an old thread but i haven't changed anything in my tune since then.
ac wont work at idle - EFILive Forum
Last edited by 6.0vortecchevy; 10-19-2009 at 10:19 AM.
it's probably too rich on the idle tables. If you have a wideband try to get the idle mixture close to 15:1. When it gets warmed up and in closed loop, that's probably when it starts to run correctly.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
ok ill try and barrow my friend wide band, but i do remember the last time i had a wide bad on there i think it was 14.1 or something like that but i will do that still.
oh...idk bout efilive, but in hpt there is an idle air startup table
u prob need to add air to that...it will let the IAC open more to let more air in, heres what it looks like in HPTuners
Ok ill have some result in a few hour i need to see if the wide band is still good and not burned up. Thanks guys.
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