Ok ok, let me first start by saying many of you have been helpful in the past and hopefully will come thru for me again.I have a 97 grand marquis that has over 115,000 miles on it. Recently, I had a problem with check engine light on for the past yr and half. Finally broke my last nerve with it on and went out and purchased a scan tool. Retrieved codes p0171 and p0174. Found out what they were. Repaired the problem. Found tiny hole in egr boot. Replaced as req. Drove car for at least 150 miles. Rechecked obd-2 system and had monitors cat and evap "not ready"yet for testing. Ran car thru inspection and it passed. Cars drivability is fine. No engine light or anything until today, while driving, all of the sudden the light comes on. Return home from running errands and hook up scan tool. Pull up code p0430.I know what code means. Here are the parameters the engine was at when the light came on:fuel sys.1, closed, fuel sys 2 n/a, calc load 32.9%, ect at 181, stft b1 at -2.3, ltft b1 at 22.7%, stft b2 at 0.0%, ltft b2 at -100%. I hope this helps someone help me understand whats going on. Really don't feel like replacing a converter.O2 sensor I maybe able to. Please help. Thanx in advance, dano
have the same problem?
Wednesday, November 24th, 2010 AT 8:08 PM