SOURCE: pcv valve :where is it located on a 1999 ford explorer sport 2wd
It is located at the back of the engine near the fire wall. It is gray with a T connector at the top with two hoses coming off of the T and going forward into the intake manifold.
SOURCE: 2001 Ford Explorer 4.0 SOHC no timing marks on cam or chain
get a haynes manual and look up camshaft replacement..its worth the 30 bucks
SOURCE: Ford Explorer 1998 4.0 sohc Diagnostic trouble
If you don't have poor gas milage and loss of power, the cat is not restricted and not at fault, however, an engine misfire can also trigger that code.
Change the 02 sensor down by the cat first,( it's cheaper than a cat), see if that clears the code, if not, then go for the cat. You will already have a new 02 sensor, so that will eliminate those two. Hope this helped.
SOURCE: Getting an engine code 1450 on a 2003 ford
Did you check the block box connected to the vent solenoid? There's a hose that comes off it that appears to run nowhere, that's the fresh air vent. If it's blocked it won't allow air into the system which will set the trouble code. If that's clear, the vent solenoid itself is bad and needs to be replaced.
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