View Single Post
Old 11-19-2004, 11:07 PM
pesuazo's Avatar
pesuazo pesuazo is offline
Registered User
Join Date: Oct 2002
Location: Near Raleigh, NC
Posts: 580
Other possibilities for High NOx:

Malfuctioning/Inoperative EGR valve, Out-of-calibration MAP sensor, plugged injector, low fuel pressure, vacuum leak, advanced ignition timing.

Any of those malfunctions will cause higher internal temperatures, hence increasing NOx.
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified
Reply With Quote