Thanks gents
Toms 89 - Interesting comment that the 420 and 430 code together may say something else is wrong.
I could see that. But Ford dealer was the one that pulled that and I talked to the service manager about just those "other" possible issues. He said his analyzer would have picked...
2006 Expedition. 420 code (passenger cat) Nov 2011. Had universal put on at Midas for $600. Solved.
March 2013 420 code at 2 shops and both 420 and 430 code at Ford dealer. Ford dealer said no other codes like mixture/02 sensors/misfiring, so he was convinced its the cats.
Vehicle does...
I am looking to replace my 2006 Expy 17" OEM wheels with 20" wheels.
If so, do I need to have the speedometer/odometer adjusted so that speed/distance will be correct?
If so, how is this done specifically?
Thank you,
Scott A.
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