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ECMlink No Closed Loop, Fuel cutting?

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flinguist

20+ Year Contributor
943
21
Jun 23, 2003
Rockwood, Michigan
Suddenly stopped going to closed loop at idle. No fuel above about 4000 rpm. This happened after I changed the injbatteryadj voltage dead times(ECM link V3). I changed them back to their original settings and it still has the same problem. Injectors are shutting off when throttle is increased to around 4k rpm.
What's happening? Did I inadvertently change something else via direct access? What should I look at?
ecmlink post
 
Problem was launch control rpm for injectors cutting out, fixed that. Tried to put it in closed loop by lowering fuel pressure to 38 from 43, didnt work. Increased fuel pressure back to 43,lowered global for ID 1000 injectors from -49 to -64, 900ms is the dead time. This made wide band O2 cycle around 14:1, and put it into closed loop. The rich running problem came about when I installed a fuel pump voltage booster. Seems to be working. Will take it out tomorrow and do some pulls to see if anything needs changed.
 
Had a rich knock issue from the fuel pump voltage booster. Ran much better 'til the knock issue. Disconnected the voltage booster pressure sensor to have a more constant lower voltage boost (16-18 volts). Couldnt take it for a run after that because of a coolant leak. Have to fix that problem before another test run.
 
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