|
3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
|
Failed smog test due to OBD-II - thermostat?
I failed the OBD-II portion of my smog test here in Washington state (King County) due to what the computer said was:
Failure in the coolant recirculation
Oxygen sensor
The car is a '99 323iS (e36). The check engine light was on before I took it in. The tech seemed to think that if I replaced the thermostat, it would cure the problem. He said that the oxygen sensor sometimes shows a false failure if the thermostat is out of whack. I since bought the thermostat from Pelican, but am wondering if I should replace the oxygen sensor as well? My next test if free, but if it fails again, I have to pay. It's less the money than the hour out of my work day to get this done.
Has anyone had a similar experience?
BTW, the manual says to use a special tool to remove the fan to get at the thermostat housing and to drain the coolant while at it. Are there any special tool workarounds for the fan tool? Also, the coolant in my car is fresh. Is there any real reason to flush it?
Last edited by kenikh; 02-27-2005 at 12:29 PM..
|