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This is a general rough idle, fuel injector question!
I am working on my son's 1996 Ford Taurus again. I did a bunch of repairs, (new plugs, proper gap, new O2 sensor, 3 years ago new heads.....) and It has a rough idle. But OBD-II seems to be happy.
If I pull the connection to fuel injector #4, the idle smooths out, but it throws a lean code on the OBD-II.
Seems very odd that it would smooth out by disconnecting the injector signal to a fuel injector.
Does this make any sense to any any one else? If disconnecting it did nothing, I would understand that, and would tell me that injector or cylinder had a problem (spark, valve, fuel injector....). Disconnecting the other fuel injectors makes the rough idle a lot worse!
The rough idle is the only remaining symptom, problem I know of so far having to with the engine.
I am working on my son's 1996 Ford Taurus again. I did a bunch of repairs, (new plugs, proper gap, new O2 sensor, 3 years ago new heads.....) and It has a rough idle. But OBD-II seems to be happy.
If I pull the connection to fuel injector #4, the idle smooths out, but it throws a lean code on the OBD-II.
Seems very odd that it would smooth out by disconnecting the injector signal to a fuel injector.
Does this make any sense to any any one else? If disconnecting it did nothing, I would understand that, and would tell me that injector or cylinder had a problem (spark, valve, fuel injector....). Disconnecting the other fuel injectors makes the rough idle a lot worse!
The rough idle is the only remaining symptom, problem I know of so far having to with the engine.