P0190 and Stutter
Twice now in the space of about a month, when the car is idling for 10 minutes or so (picking kid up from school), it will begin to shake/sputter and cut-off. It takes several times to crank before it will catch, and then it seems to run fine. This last time, it threw a P0190 code. I've read several past threads and there seems to be a split in opinion. Some say the P0190 code is simply a diagnostic of the sensor itself and the sensor needs replacing. Others say it could be telling me there's actually a fuel delivery problem. Given that the car stutter and cut-off, I'm going with the latter, assuming that a failed sensor doesn't cause fuel starvation.
So, am I correct in my assumption and need to be looking at fuel delivery? This pump is less than 2 years old as are most parts on the engine because I threw a rod a couple of years ago and had a new forged rebuild done. Car has ran fine up until now. I suppose I should start with a new fuel filter and go from there? I do have an OBDII gauge logger...can't remember if fuel pressure is communicated, but after the fuel filter and assuming PSI is ok, then what?
For now, I cleared the code, and car seems to run fine. It is 100 degrees here, but the coolant never exceeded 180. Can the heat cause some kind of vapor lock on these setups?
03 300A
Trilogy #154
Stainless Works LongTube Headers, Magnaflow High Flow Cats, X-Tube, Rear Cat Delete, Borla Mufflers, 2.5 Mandrel Bent pipes
Lido tune
Performance Transmission, 2500 Stall