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the computer is going to shut fuel to protect the engine thus limiting rpm, if there are no other problems with idle or throttle what its doing apears to be normal.
Work your way through spark plugs, ignition coil, fuel injectors. If all these look fine then it is likely electrical. When you check the spark plugs if they are blackened then this also points towards fuel injectors also.
It's not that difficult to replace. You should be able to get any diagram you'll need, as well as a lot more useful information by registering for free at www.autozone.com Registration gives you free access to repair manuals and some shop manuals, most with sections that can be downloaded and printed.
If no external fuel filter is found in the fuel line, then there is a filter on each injector on the 4 cyl.
Fuel Injectors
WARNING To avoid personal injury and/or vehicle damage, refer to the service precautions at the beginning of this section. General Information
Electronic fuel injectors for all gasoline engine applications are basically the same. They consist of an injector body, an electric solenoid, spring, nozzle and a filter. The injector is supplied a constant supply of pressurized fuel from the fuel system. The primary function of the fuel injector is to atomize gasoline into the surrounding air at the proper time. Throttle body injectors atomize fuel into the intake manifold or combustion chamber in much the same manner as a conventional carburetor (wet intake); port fuel injectors direct the atomized fuel at the back side of each cylinders intake valve(s) (dry intake). Gasoline direct injection systems operate at substantially higher pressure and direct the atomized fuel directly into the combustion chamber of each cylinder.
sounds like a map sensor or the fuel (air/lean rich)
sensor you will need to speak with a mechanic and have them put their machine on ,it gives more info than the basic code reader
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