SOURCE: OBD code 0401 (1997 Toyota Camry 4 cyl)
There is a VSV (vacuum switching valve) , usually mounted on the back side of engine block, under the intake manifold, as well as the map sensor, that can also cause that code if one or the other is faulty. It takes some pretty detailed troubleshooting to confirm this in some cases, so if that's not in your line of work, you may have to have it properly diagnosed, or take a 50/50 shot at which one first.
SOURCE: Irratic Idle
sound like your mash air flow sensor is gone on the tp sensor i had the same problem with mine
SOURCE: Help Me With 92 Toyota Camry LE 4 cyl...
should be a 14mm drain plug on the oil pan. you remove that until no more oil comes out. then put drain plug back in. it should be the only 14mm bolt on the bottom of the pan. then you will have a oil filter below the exhaust manifolds than needs to unscrew. replace with a new one. then fill your engine with 1 gallon or 4 quarts of oil.(same thing) thats all you should need.
i dont know but if you learngin how to work on cars thats a nice car to learn on. it pays off to repair your own car in the long run. you save so much money. :) GOOD LUCK!
good luck,
Michael
SOURCE: 2004 Toyota Camry 4 cyl automatic. What mileage 85000
80 thousand miles is the best, any more you are risking damage to your engine.
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