Originally posted by asystole:
code 420 refers to the O2 sensor, specifically the #1 bank above or before cats, this is the sensor right by the fire wall under the coil pack. their is a how to in the howto section, i hope this helps
Uh, no!
Catalyst efficiency test, as already noted.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
| 
