When to replace o2 sensors

Z_ealot

Cleaned those when i first got the car, inspected them just this last weekend and not very much buildup on them. Only things i can think of that might cause the hesitation are a vacuum leak, dirty fuel injectors or possibly a faulty abs sensor. I've looked for a vacuum leak before and couldnt find anything, but that doesnt mean there isn't one, im running fuel injector cleaner through the gas tank right now so i suppose we'll see if that helps and the only reason i mention anything about the abs sensors is because when i have vdc turned on i get a wheel slip light along with the slight hesitation. Car runs perfect otherwise, just going crazy trying to track down the cause of the hesitation


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