I bought a 1998 Passport 2 months ago it has 186,000. I have replaced a lot of sensors in the last 2 weeks. Specficaly the TPS, all 4 O2 sensors, Idle Air Control Valve, Manifold Air Temperature Sensor, and EGR.
I'm still getting the following codes..
P0405 Exhaust Gas Recirculation Sensor A Circuit Low...intresting since I just replace the EGR valve yesterday. I also tried to clean the EGR tube in the manafold as it was not horrably gunked up but I cleaned it as best I could with SEAFOAM and Carb Cleaner. I'm sure i could keep working on this to make it cleaner.
P0327 Knock Sensor 1 Circuit Low Input (Bank I or Single Sensor)... One of the sensors i have not replaced so it is now on the list.
P0102 Mass or Volume Air Flow Circuit Low Input.... I cleaned this also but how can i check to see if it bad?
Thanks in advance.. Many posts on this forum have solved other issues I've had already.