I have tried to adjust my idle and change fuel tables as well as timing table and it wont idle steady below 1100 Rpm's. I have read the start up guide multiple times as well as searching the forums with no luck. Also when i turn on the A/C the idles drops really low and dies. My car is a 93 Mustang 5.0, Edlebrock performer head, 42 lbs injectors and a kenne bell 2.1 supercharger, with a MS2/Extra ECU. If more information is needed please let me know. Any help will be greatly appreciated.
Thank You in advance.
idle issues
Moderators: jsmcortina, muythaibxr
Re: idle issues
it appears to be the closed loop idle opening and closing your idle valve that is causing the lopey idle, if this is a fresh tune id start with pwm warmup for idle until you have a more dialled in tune
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
Re: idle issues
I started with another fresh tune and have the idle set good. However on cold start up the idle surges and the VE live warmup enrichment and it made it worse. I forgot to start a datalog on the cold start up. Once it is warmed up on initial start up it Surges and revs really high for a few seconds then it smooths itslef out again. What can I do to correct that issue. Thanks again.
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Re: idle issues
It's hard to tell as the datalog starts while the engine is already running. Looks like your "idle cranking duty" curve is set too high. The "crank to run taper time" looks large too.
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".