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Possible plugged cat.


fourwheelford

Well-Known Member
Joined
Jul 24, 2009
Messages
397
City
washington state
Vehicle Year
2000
Transmission
Automatic
I have never had a plugged cat before but I think I may have one right now. Recently the truck has lost a significant amount of powwr and the ability to climb hills even small ones. It doesn't stink but the acceleration is suffering and my mileage is not very good either. I have explored other possiblities but this makes more sense. Just to get it out of the way the truck is running fine other wise, oil is oil and coolant is coolant, it has 8000 on a fresh tune up and about 6000 on a fresh fuel filter, I have checked for vac leaks and turned up nothing. What do you guys think? Any info would be great thanks everyone.
 
Vacuum test. Plugged CAT for a 2000 would not be the first thing I would look at unless you're burning excessive oil.
 
I seem to be having the same symtpons as you except mine is a '93....

How do you do a Vacuum test....?
 
I guess I get to spend my 3 day weekend tearing crap apart to see if I can find the reason for the stupid thing not running right. Can I take off the upper intake plenum without taking off the fuel rail or any thing else? Im just going to take it off and check hoses and what not, I have sprayed stuff all over the place trying to find the leak but im getting fed up with it. Thats one of the reasons I suspect one or both of the cats may be at fault
 

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