B
Borman
Guest
Something just silly has happened.
I've only replaced spark plugs today.
After that EEC/PCM stopped issuing pulses to fuel injectors
.
Fuel pump works fine, fuel pressure is fine, ignition is fine - sparks are on each spark plug during crank. But there is no EEC/PCM pulses into injectors.
So apparently crankshaft position sensor and EDIS ignition module are fine too.
EEC issues fuel pump control signal fine (fuel pump is turned on and then off when turing ignition on and goen on when cranking)
Fuel_Pump_Prime circuit is fine as well, it's got +12v.
Usually this circuit's failure prevents EEC/PCM from sending injector pulses.
I cut off Fuel_Pump_Prime wire that goes into EEC and connected it to +12v so it's always on, but it still does not send any pulses to injectors at crank.
Does anyone know what else can cause EEC/PCM to disable injectors?
Any advice would be greatly appreciated.
Thanks.
I've only replaced spark plugs today.
After that EEC/PCM stopped issuing pulses to fuel injectors
.Fuel pump works fine, fuel pressure is fine, ignition is fine - sparks are on each spark plug during crank. But there is no EEC/PCM pulses into injectors.
So apparently crankshaft position sensor and EDIS ignition module are fine too.
EEC issues fuel pump control signal fine (fuel pump is turned on and then off when turing ignition on and goen on when cranking)
Fuel_Pump_Prime circuit is fine as well, it's got +12v.
Usually this circuit's failure prevents EEC/PCM from sending injector pulses.
I cut off Fuel_Pump_Prime wire that goes into EEC and connected it to +12v so it's always on, but it still does not send any pulses to injectors at crank.
Does anyone know what else can cause EEC/PCM to disable injectors?
Any advice would be greatly appreciated.
Thanks.
