Engine die???

For discussing MicroSquirt (TM) configuration and tuning of fuel parameters (including idle valves, etc.).
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scirocco_per
MegaSquirt Newbie
Posts: 14
Joined: Fri Oct 14, 2005 11:25 pm
Location: Sweden
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Engine die???

Post by scirocco_per »

I going crazy,my idle is going up and down then die.
See my Datalogs and my msq fils

MS-I/MSnS-E V3 029q2 code and PWM valve
VW Scirocco 1900cc with Eaton supercharger 11psi in boost and E85 fuel (ethanol) 399cc injector

MSnS-E V3.0 code Extra 029q2 Edis4

http://www.scirocco53.net
Bernard Fife
Super Squirter
Posts: 1009
Joined: Mon Feb 16, 2004 3:15 pm

Post by Bernard Fife »

scirocco_per,

You need to do some more tuning. It is quite normal to see this sort of behavior at first.

Looking at the log, the idle speed is highest when the pulse width is lowest. The pulse width varies from 3.7 at the highest idle rpm, to 4.0 at the lowest. I think you need to flatten the VE table near the idle bins (there's actually a bit of a delay, so the best value is probably in the middle somewhere, with a VE of 58 or so). You need to get that more constant.

Some of the oscillation is caused by the idle DC cycling from 68% to 0% and back, I don't know how that is supposed to work in MSnS-E.

Lance.
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