1999 q45, has very steady idle at col start, once engine warms up, its not rough, but can feel multiple missfire
does not feel like it wants to shut off, its not rough and has no problem at acceleration, but u can hear the missfire at the tailpipe and can feel the miss every time it misses
the ambient sensor what tells the ECU sees only a cold condition as the motor warms starts chokin with incorrect air/fuel ratio~
i dont smell raw fuel, it is a slight missfire, like it shuts off a cylinder for an instance and back on, but constant on both banks
no not RAW fuel...an uncomfortable air/fuel ratio which will foul plugs and run black~ perhaps it is an air temperature sensor---will not know until we have your diagnostic trouble codes read...get them at any autoparts store or get your very own OBD-II coder reader~
THE CODES THAT I GOT BEFORE CLEARING THEM WERE KNOCK SENSOR BANK 2 AND HEATER SENSOR BANK 2, CLEARED THE CODES, REPLACED ALL SPARK PLUGS, REPLACED RAFDIATOR CAUSE IT WAS LEAKING, STARTED VEHICLE AND HAS THE EXACT SYMPTOMS BEFORE DOING THE PARTS REPLACEMENT, CHECK ENGINE HAS NOT COME ON YET, AND NEVER GOT ONE FOR RANDOM MISSFIRE
You've already replaced the last 02 sensor on the exhaust pipe?
no, i have not, now im getting random missfire with code reader
Looking for a Used Q45 in your area?
CarGurus has 103 nationwide Q45 listings starting at $1,800.
Get More Money for Your CarBe seen by 20 million shoppers. Create Your Free Listing
Search INFINITI Q45 Questions
INFINITI Q45 Experts