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Re: MAF sensor (2000 4d, 2wd blazer)
What engine?
What is the mileage on engine and last tune up?
Was AC delco plugs and parts used on tune up?
Is you fuel mileage up to par or what it was when you got it?
If cleaning the MAF sensor helped I would give it another cleaning and keep a good clean air filter and fuel filter on it.
02 sensors last a lot longer than they used to and are expensive to replace all of them.
Some say to replace them ever so often.
But
It is a tough call to say to replace or know if they are getting weak.
Only a good engine capable scanner or lab scope can be used to test them.
MT
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Remember proper testing gives us the answer to many problems.
MT
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