[mlue]

Coincidence or what I just passed emmissions test last nite after months of trying to get my car to pass. In the process I have found that the too most important things required to pass the test if everything else (plugs, wires, cap and roter) are OK (1) Oxygen sensor (2) Catalytic Converter. These 2 work togeather. When I bought my car the cat was burnt out, it failed the test with high HC. I replaced the cat and the car failed again but the HC level was only slightly above the limit compared to the first test where the levels were through the roof. The car failed the second time due to a high CO level. I replaced the O2 sensor with a universal and made sure the allen screw on the AFM was adjusted to the same amount of turns as the one on my friends car (previous owner had played with it, the cap for the adjustment hole was missing). The car passed with flying colors last nite.

The technician says that if you have a bad O2 sensor or the car is running rich it will burn out the cat after a while. It the cat is burntout, after a hard drive you will not smell the sulfur smell just raw exhaust.

I hope this helps.

Mark
'86 944NA

[This message has been edited by mlue (edited 09-06-2001).]