Alright, I'll explain how I got here in a minute, but BLUF: Does anyone know if the 2012 EGR reported error on the OBD is actually an EGR position sensor? OR is this somehow a calculated EGR error taken from O2 readings and what not?
- A while ago started having sporadic "slow starting" problems...
- Mechanic changed plugs (waste of money, they are iridium I think and I was around 60k at the time) - did nothing..
- Recently, that escalated to occasional cold stalls. In the first 5 minutes (or less) of driving, coolant temp below 160 or so (seems to be the worst, per the OBD), if accelerate a bit and stop (i.e. pulling up to the first stop sign on a drive) it seems to stall somewhat reliably.
- Changes the air filter and cleaned the throttle body - no change in behavior
- Other evidence - Occasional lack of acceleration followed by a sudden jolt. Gas mileage is definitely down a few MPG from where it should be (getting ~18-19 average on a 80% highway but frequent traffic commute... would expect at least the city 21 or a little better for my driving) hard to say how long these ones have been around... possibly I've been ignoring it for a while and am just noticing how that I'm looking for stuff
- Finally got a bluetooth OBD reader instead of the USB one so I can lot some stuff on my phone...
- Getting values all over the place for the reported EGR error (using Torque Pro to monitor and log). Also, the air/fuel ratio seems to be peaking somewhat abnormally (sometimes up to 18 or so, then settling back down to 14). Trying to figure out if I definitively know cause and effect yet before I started a) cleaning my EGT valve or b) otherwise hunting down a vacuum leak somewhere