Fuel Pump Assembly Installation
Pulled the rear lower cushion out, it was a mess, took a shop vacuum to it.
There are two black doors, fuel pump is on the passenger side.
Looks like mice have been busy, used the shop vacuum to clean it out too. This is actually important because all of that crap will fall into your fuel tank!
Pull the fuel pump fuse and idle the car till she dies, this should get rid of most of the fuel in the fuel lines. It is not sufficient to just unplug the fuel pump plug! I did that and the car kept on idling still (but struggling), plus threw a CEL.
It is much wiser to do this install on 1/2 or less full tank. I just got back from a highway trip and wanted to replace the pump before another road trip. I drove 25 some miles (should have been 1 gallon used) and it still was way too full, lets just say my driveway got a ton of gas on it...
Stock fuel pump assembly in it's glory, it looks pretty clean not yellow like a lot of them tend to be. I wonder if it was replaced anytime recently.
Modified assembly ready to be installed. The rubber gasket has nipples and the spacing varies, thus it only installs one way to the metal bracket. For this reason it's a good idea to attach the rubber gasket and metal bracket before you try to stick it in the fuel tank.
After some fighting finally got her in and tightened and hoses plugged up
I started and idled the car for a good 20 minutes to make sure it was happy, fuel pressures seemed in order too. Went for a drive watching the wideband making sure it wasn't leaning out, after that gunned it a ton and took her on a 15mile highway trip, all went flawless. I'm keeping the stock fuel pump assembly in the car just in case still though
Learning views are still looking the same so far, will drive for a while and will see if they change. AFR's were about the same too, which means the previous filter was not too clogged, which is a good thing. Guess will see if it was clogged enough to hurt my gas mileage though.
Engine Bay Filter Installation
Now that the fuel tank filter is bypassed you need to add a filter in the engine bay. Do not run the car without a fuel filter, you can clog up the fuel injectors. Also make sure to read the manual and verify which line is the feed line and which line is the return line.
~12" of 5/16" Fuel injection hose
: $8/foot usually, try to find a similar box as pictured you get 18" for similar price.
Fuel line Clamps
: $12 (store brand)
First thing is to drain the fuel out of the fuel lines, the easiest way to do it is to pull the fuel pump fuse (in the engine bay fuse box) while either the car is running, or start the car with the fuse pulled and let it die. This will consume just about all of the fuel in the feed line.
Stock fuel lines, top one is the fuel feed line, center one is the EVAP line, and lower line is the fuel return line that goes to the FPR. Connecting the fuel filter to the wrong line will net you without any filtration, which can lead to clogged injectors. The order may be different on your car, verify with your factory service manual.
BUT I have found inconsistencies in the manual between which line is which in my 2005 manual (some pages say top hose is feed, some pages say bottom hose is the feed hose).
Remove the the fuel injection clamp, you will need a couple more, get them at the dealer on any auto parts stores.
If your line is stuck, like mine was, carefully use some pliers to carefully break the line loose by rotating the line.
Fuel filter should be properly labeled, if it's not for these filters the center hole is the out to the fuel rail, and the offset one is the feed from the pump.
First attempt and at the install, sadly the stock line is not long enough to reach in front of the battery.
Decided to put it closer to the FPR, ziptied it to the TMIC holder (will need to figure something better out later).
All done with the FP gauge attached to the return line: