i have a 2001 toyota mr2 spyder..it keeps throwing the P0420 bad cat....replaced cat..replaced O2sensors..replaced to coil packs..then got the P0420..figured i dumped in raw fuel in cat ..so i bought another cat..85 miles later i get the P0420 code...about to run car off a cliff..Help..
first replaced O2 senors..replace a bank one sensor...had misfire code that was cleared without my knowlege...replaced cat....again. misfire code .replaced two coil packs and a maf...got the p0420..replaced cat again..drove 89 miles today got that freaking p0420 again...Why and what to do to clear and keep p0420 out...at wits end
i beleive they are oem not sure...got the cats from browns...and the sensors from advance and coil packs..
i ve seen alot about this on the net...someone suggested o2 spacers?...they said they worked..who know..but very discussed...
do you beleive the cat is still good...just cheap sensors??
yes the car has excellent pick up...runs very smoothly just that dam light
in your past experience..i am sure you have seen this problem right....did the above correct the problem...i know you dont have a cystal ball..just your opinion...
alos while you are typing i think it has 3sensors one on each side and one on the back
you mentioned the above two sensors..but isnt it three?
the last time i looked it had one on each side of the engine and one on the back end...are they separte from the converter..as do the converters have there own sensor ports?
ok i see on the cat picture ..it has two sensor holes...ok...i will have to save a few bucks and more than likly get on this in a couple of weeks..just park her in the garage....
ok...if i can locate you again on here..i will let you know the out come..thanks
30+ Yrs of auto experience, Award Winning Svc. Manager; Just Answer Customer's Choice Award Winner