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you have multiple misfire po300 and cylinder 5 po305 misfire.the misfire is causing the rough running.The computer has disabled your traction control.You either have carbon in the EGR which simulates a vacuum leak,bad spark plugs,a leaking intake manifold,or low fuel pressure from a bad pump or clogged filter.
i would start with the spark plugs and fuel filter
Those generators are set up with a low oil saftey but your gonna want to check compression anyways just to verify it is where it needs to be. Im gonna guess its to be between 120-160 psi, check your manual for the service limits. after that check your air filter, valve lash, fuel filter etc etc.
This model car has a "permanent" Fuel filter/pump combination. It is not meant to be changed. The filter/pump combo is in the fuel tank and can be accessed from under the back seat. I am highly doubtful that the filter is the malfunction you are experiencing. When your vehicle has low power and runs rough rough at low RPM's and then starts misfiring at 3500 RPM, it sounds like your timing belt has stripped some cogs and is in the process of shredding. THIS IS AN ENGINE EMERGENCY!!! IF THE BELT FAILS COMPLETELY AT HIGH RPM IT WILL DESTROY YOUR ENGINE!!! Do not fool around with changing sensors until you have had this checked out. If your DTC is saying that the MAP (Manifold Absolute Pressure) sensor or TDC (Top Dead Center) sensor is bad, check the timing belt.
Perform a valve clearance inspection and adjust if necessary. Tight or sticking valves will cause a misfire or rough running concern. Note: Perform valve adjustment when the engine is stone cold. 4cyl: INT 0.26mm EXH: 0.30mm (V6 engine are hydraulic and no adjust necessary.) Also check for a sticking or stuck open EGR valve. For diagnostic purposes only: Remove the EGR valve. Place a business card over the EGR passage and bolt the EGR valve back on. This plugs the EGR ports and if the misfire goes away the EGR valve is partially stuck open and is defective.
Check for low fuel pressure. Check for low compression. Check cam timing. Check for a weak ignition coil. Also don't over look the possibility of worn or broken engine mounts which cause excessive engine movement and engine vibration. -hope this helps
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