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sure,, heres what you do. throw about 4 bottles of STP injector cleaner in the
gas tank the next time you get gas. dont fill the tank more than half, that way
you get a nice concentration of the stuff running past the injector nozzles. put
the cleaner in first and then the gas do'd it will mix up in the tank'.
If you do a lot of non highway driving then take it out on the expressway and
drive it for about 20 miles to blow the pipes out.
now for the egr valve. I dont have a book on you vech but the egr valve is on
the top side of the engine and its suppposed to shoot a little exhaust gas into
the motor when it needs it. That exhaust gas is a little dirty so it sometimes
clogs up the valve. Get yourself a manual for the vehicle, it tells you how the
do these things where they are and pictures of what they look like. They all
look a little different from maker to maker and from model to model.
I moved this to your own topic. First off here is what your codes mean...
P0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0300 Random/Multiple Cylinder Misfire Detected
My guess would be you need a new Oxygen sensor.
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