so i had my turbo saturn inspected today for the 4th time and failed once again because of my o2 sensor. now b4 you say just replace the sensor im going to tell you its not that easy, they put in 3 brand new sensors and they died in a few minuets because my car is dumping fuel in apparently. everything on the car is perfect, MAP sensor, temp sensor, PCM all working correctly.
my friend suggested that maybe the car is seeing some boost causing it to dump in fuel like that and said to try putting my cheap adjustable BOV in and losen it so that some boost (if any) excapes maybe leaning it out some. but my concern about that is i dont want to blow the oil seals on the turbo.
any input about anything would be greatly appreciated so i can finally pass.
and btw my car is a 97 has the stock injectors in and running on the stock computer right now.
that or run one of those peices that go over the 02 sensor to make it sample less area. i forget what it is called. but it is used for these kinds of situations.
if its an internal wastegate, just loop some mechanics wire around the actuator arm and tie it off to something
if its internal, maybe just take the spring out (as long as the diaphram has enough play in it)
the pieces FIP speaks of is the old trick with spark plug antifoulers, get 2 for every O2 sensor, drill one out all the way, leave the other one stock, then screw them together in this order:
for inspection, they usually just swing through the parking lot at the very most, otherwise it just sits and idles. its mostly just tested for equipment.
and depending on turbo size, a turbo can still spool a decent amount even with a massive leak, i had a 14b on a 2.4l with the internal wastegate wired open, and it still made a few psi, which is why i recommended making a restrictor for between the mani and turbo
