Help me AEU86, you're my only hope

[jondee86]

WOW!!! This thread is getting really interesting

As shown by Jeremy Ross in his article the ECU has a correction table to
adjust the injection duration to compensate for low system voltage. His last
comment in particular is relevant to the current investigation.



Now, what happens when the jumper battery is disconnected ? I suspect
that with the jumper battery connected the alternator sense wire is seeing
the voltage of the fully charged jumper battery. The alternator will ramp
down its output current and cause less load on the engine.

When the jumper battery is disconnected the sense wire will see the lower
voltage of the discharged battery and ramp up its charging output. This will
certainly increase the load on the engine, and very possibly cause the
system voltage to drop slightly. Check the voltage across the battery to
confirm of deny this theory

Cheers... jondee86