Quote:
Originally Posted by Gray035
Out of curiosity, would a faulty injector cause a somewhat rough idle even before the computer shuts off fuel supply to that cylinder?
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Yes yes and yea While the computer would not shut it off it would send signals to the fuel side to extend the injector dwell (amount of time open) as the O2 sensors would see a lean condition on this bank.
IF the injector faults out enough to cause a cyl miss fire code. Otherwise it stores a pending fault in the memory.
Poor idle, loss of power, stumbles, etc all driveability issues raise their ugly heads. It would act just like a bad/dead plug when totaly dead otherwise it may crap out intermittently. Most just do not flow what the other injectors are flowing so there is all kinds of weird symptoms. One example would be wide open throttle (WOT) performance struggles. Like going up a hill, drops a cyl, stumbles, then picks back up, kinda stuff.
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2005 X5 4.8IS
The
Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green