I have a 95 Landcruiser with 245,000 miles on it. I'm in California, and need to get a smog check. The CEL came on about 5 days ago, and I scanned it and it said I had a po401 code ("Exhaust EGR Flow Insufficient"). I noticed that the EGR Vacuum Solenoid had a green sticker on it, so I assumed it was the original one and broken. I then replaced it with a new one with a blue sticker. After replacing the EGR Vacuum Solenoid, my scanner initially stated "egr not ready". Then after about 40 miles of driving, the CEL came on, and my scanner then read the po402 code (""Exhaust EGR Flow Excessive"). So basically, I went from EGR flow insufficient to EGR flow excessive after replacing the EGR Vacuum Solenoid!
I had replaced the O2 sensors before and after the cat about a week before replacing the EGR Vacuum Solenoid, because I was getting a po420 code. That code hasn't come back yet, although my scanner still states "cat not ready."
* Does this give me any hints as to what to do next to pass the CA smog test?
* Are their any recommended Landcruiser repair places in the Oakland, CA area that could figure out the problem, so that I can minimize my expense and the number of parts I need to replace?
Thanks,
Greg
I had replaced the O2 sensors before and after the cat about a week before replacing the EGR Vacuum Solenoid, because I was getting a po420 code. That code hasn't come back yet, although my scanner still states "cat not ready."
* Does this give me any hints as to what to do next to pass the CA smog test?
* Are their any recommended Landcruiser repair places in the Oakland, CA area that could figure out the problem, so that I can minimize my expense and the number of parts I need to replace?
Thanks,
Greg