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Some of the trucks had two O2 sensors one before and one after the cat... why I don't know... might have been some thing to do with Kali. emmisions...
sounds like the PO did a frankenstein on the exhaust system...
in this case I'd almost want to bring it to a good dealer for a diagnosis...
or else a toyota specialist shop in your area...
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Silver 1994 Hilux Xtra cab 4x4 3.0
K&N cone filter, ported MAF, advanced timing, oversize exhaust, free flow cat, "rumble" muffler
custom covered SR5 seats, map lights, factory AC
tv4184 style black interior conversion started
mods to come... header,
custom centre console, stereo upgrade
tinted windows
Founding member 1972TLC fan club
Toyota Hilux... Get in or Get out of the way.
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