lilgreenman
New member
I unplugged the EST wire ,the idle changed,I think it should,timed it useing an inductive light. when
I plugged the EST back in the idle stayed the same. Shouldn't it idle back up? Also with thhe EST plugged in I pointed the light at the mark and it drasticly jumped off the timing mark plate form one end to the other. The engine surges at an idle. ECM or ESC ?
I did not unplug random wires To time this truck the EST ,electronic spark timing system must be bypassed by unplgging the tan wire with a black stripe and no the service engine light was not on nor did clearing the system change anything.
I plugged the EST back in the idle stayed the same. Shouldn't it idle back up? Also with thhe EST plugged in I pointed the light at the mark and it drasticly jumped off the timing mark plate form one end to the other. The engine surges at an idle. ECM or ESC ?
I did not unplug random wires To time this truck the EST ,electronic spark timing system must be bypassed by unplgging the tan wire with a black stripe and no the service engine light was not on nor did clearing the system change anything.