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Old 12-29-2012, 12:21 AM   #1
CZBugeye2002
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Member#: 274892
Join Date: Feb 2011
Default 2004 Fxt Fuel pump 100% duty cycle at idle, will not rev... Help please!!

I bought a 2004 fxt with mechanical problems and not running. Had the motor rebuilt and installed tgv deletes. Put the motor in and determined that it wasn't getting fuel. So I grabbed a fuel pump I had for a 2.0 wrx and stuck it in as a temporary fix and it fired up. But it idles very poorly, fuel pump duty is at 100% and doesn't change, and I cannot get it to rev higher than 1100 rpm. The fuel pump I put in is a good pump, but would the fact that it is a smaller pump affect it at idle? Open loop fueling shows insufficient ect as well, even though I kept it running up to operating temp and the temp gauge works. No cel's and all areas have been checked for vacuum leaks. I am very obviously new to tuning/data logging, so I could use a point in the right direction. Thanks
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