Replaced Gas pump, gas filter and still getting codes PO304, PO725 and P1240
P0304 Cylinder No 4 is misfiring (Spark Plug)
P1240 means you have a Fuel Injector problem on Cylinder No4 - Open Circuit, Check the plug on the injector
P0725 Engine Speed RPM Sensor mat be faulty
Go check out http://volkswagen-polo-highline.blogspot.com
SOURCE: 2003 vw jetta tdi fuel filter
It is on the passenger side right behind the washer fluid fill tube. You can follow the fuel lines (look like 1/4" black tubes, some are clear) from the injector pump to it. It is a caniser a bit bigger than a normal looking oil filter and sits between the washer bottle and the metal that forms the wheel well. It is held in by a screw type clamp about half way down the cylinder. Probably isn't the fuel filter unless there is air in the lines to the injector pump or they didn't bother to fill the fuel filter up with diesel after putting it in. There is not a fuel pump in the tank in these cars so everything is sucked up by the injector pump and it needs to be primed properly.
SOURCE: 1995 VW Jetta / Opener for gas cap?
on the left side of the drivers set on the floorboards by the dood. or call a VW dealer and ask
SOURCE: 99 toyo camry shuts off while driving have to keep pumping gas until it stays running
sound like a bad fuel pump.
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