This is a somewhat follow up post to my first post. My previous post was too vague, so here is a more direct way of asking what I need answered.
I have a 99 Z28, ATI SC, 38# inj., with an erradict Injector Flow Rate issue. The Injector Flow Rate will fall to 0.6 every 7-10 seconds.
The sample scanner file is performed at light load. If no load is placed on the vehicle it can not overcome the surge and turn off.
I have tried a stock file, a stock file with new injector flow rate to accomodate the 38# injectors, OL, SD, disconnected MAF, checked for misfire, verified fuel pressure by hooking up a gauge.
Can anyone give me a clue as to what would cause the injector pulse width to drop and come back up every 7-10 secs.