weird idle problem with pt 880's
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weird idle problem with pt 880's
I have had the same problem for sometime, I just cant get my car to idle properly..... The car will only idle without bucking and poping when I have it extremly rich like in the 11-12afr anything higher and it starts to misfire... I have tried every combo with the battery offsets,egt and iat...when the fan comes on it will idle fine untill it shuts off, and its not just me I have a couple friends that are good at tuning and it leaves them scrathing there heads.... So far I have checked everyhing mechanical,made new ecu, new conversion harness,grounds, sent the injectors back to p.t and had them checked and cleaned etc etc.... I have no clue as to why it is doing this maybe I am missing something... I am using 880cc precision injectors,boosted b18c,gm 3 bar map, 255 walbroh pump, aeromotive regulator... Please help.....The only thing I havent really checked was the pump, I do have an extra but the fuel pressure looks good......
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its not gonna hurt anything to let it pop.. Id rahter have the poping than run it really rich for a smooth idle..
Last edited by Bugermass on Mon Mar 16, 2009 1:30 am, edited 1 time in total.
Chris Delgado Tun'd Performance Houston Texas 713-962-8262
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+1 As long as the car is not shutting off or wanting to die a little popping is better than 11.5 a/fs at idle. You do not want to wash the cylinder walls down with gas and possibly cause damage.Bugermass wrote:its gonna gonna hurt anything to let it pop.. Id rahter have the poping than run it really rich for a smooth idle..
Regards, Adam Hopkins eCtune Team eCtune Authorized Tuner Location: Murfreesboro, Tn, USA
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Bah, Its really really hard to wash cylinders down, andd 11:1 wont do it. 40k and 4 raced years later I've never had my bottom end apart and in the winter she idles right at 11:1 Doesnt eat oil or smoke. 693WHPAdam Hopkins wrote:+1 As long as the car is not shutting off or wanting to die a little popping is better than 11.5 a/fs at idle. You do not want to wash the cylinder walls down with gas and possibly cause damage.Bugermass wrote:its gonna gonna hurt anything to let it pop.. Id rahter have the poping than run it really rich for a smooth idle..