Baddog Posted November 17, 2013 Share Posted November 17, 2013 So the past week or so it feels as if I am hitting fuel cut around 5k RPM's. Regardless of what gear I am in. Replaced the air filter. Coil pack is new, NGK wires, new plugs, fuel filter replaced within the past 10k miles. Cleaned the MAF. I cannot seem to find out what would cause this. Thought maybe it was bad gas so I switch fuel stations and filled it. Not any better. Link to comment Share on other sites More sharing options...
Kennyfvholla Posted November 17, 2013 Share Posted November 17, 2013 Hmmm temporarily run a constant electrical feed power line to the fuel pump, bypassing the normal electrical controls. If you are able to drive without a problem you know that you are actually hitting a fuel cut. If not, you have an issue somewhere else. If that is that case, know what you've done, I do not really know where to start. Link to comment Share on other sites More sharing options...
Kevlar_07 Posted November 17, 2013 Share Posted November 17, 2013 you could always check the fuel pressure with a gauge hooked up in line to see if there is a drop in pressure around 5k rpm, the pump should have a operating pressure range. For example a 98 ford Taurus has a pressure range of 45-35 lbs, I'm not sure what Subaru run for fuel pressure but it should be similar. Link to comment Share on other sites More sharing options...
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