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  1. bbayne35

    Help diagnose crank but no start condition....Fuel Pump or FPDM ?

    It looks like the OEM part number for your car is 9H307 which is the same one I just installed in my 2000 GT. I am not sure how that differs from the Motorcraft part (if at all) aside from the fact that the 9H307 should cost a little less (about $480) from the dealer. Out of curiousity, how...
  2. bbayne35

    Fuel Pump and/or FPDM issue?

    I last changed the filter 15000 miles ago. I tried running the fuel pump with external power, but it was not working. I bought a cheap ($45 from Advance) micro electric fuel pump and connected that to an external 12V. I clamped a tube to the output of the fuel filter that went to the micro...
  3. bbayne35

    Help diagnose crank but no start condition....Fuel Pump or FPDM ?

    wmburns, where is the trunk ground you are referring to? Is it the one next to the FPDM?
  4. bbayne35

    Help diagnose crank but no start condition....Fuel Pump or FPDM ?

    I am going through something similar, although my car had not been sitting. The woltage going in to the FPDM should be the same as what goes in to the inertia switch, ~12V. I believe that the voltage going from the FPDM to the fuel pump will vary between 0V and 12V while the engine is running...
  5. bbayne35

    Fuel Pump and/or FPDM issue?

    I installed the new FPDM. The car started, and the fuel pump seemed to prime with each key on. I used my Predator to monitor fuel pressure, and took the car for a drive. It started fine, but the pressure gradually dropped to about 7 psi. I barely got it back in the garage before it stalled...
  6. bbayne35

    Fuel Pump and/or FPDM issue?

    I did some more testing. I have a Predator tuner, so I decided to monitor Fuel Pressure. When I first started the car, it was at 40 psi, but quickly dropped to about 7 psi. The car was running a little rough at idle. As soon as I stepped on the accelerator, the RPMs dropped and it stalled...
  7. bbayne35

    Fuel Pump and/or FPDM issue?

    A couple of days ago, I had a no start normal crank condition. Ultimately, I disconnected the MAF, and it started. I shut it off, reconnected the MAF, and it started again. I cleaned the MAF, and it seemed fine. This morning, no start normal crank again. I did not hear the fuel pump this...
  8. bbayne35

    Improving Fuel Efficiency

    I appreciate all of the information! Just to clarify, the decrease in fuel efficiency is something that I have noticed over the long term. When I first got the car, I would get about 20 mpg, but it has gradually decreased to about 16 mpg. I have modified the car with bolt-ons over the years...
  9. bbayne35

    Improving Fuel Efficiency

    I have a 2000 GT which recently turned over 150000 miles. I have noticed the fuel efficiency has diminished over the years, which is probably to be expected. In order to improve fuel efficiency, any recommendations on maintenance outside of oil filter, fuel filter, air filter, spark plugs...
  10. bbayne35

    Low Beams Inoperable

    The problem turned out to be two faulty bulbs. I was unable to see the broken filaments in my driveway at 10:00 last night. I checked the resistance over the low beam filaments, and both were bad. I also realized why I was getting a 0V reading at the bulb socket low beam pin last night...I...
  11. bbayne35

    Low Beams Inoperable

    Thanks. I will do the resistance checks when I get home from work and post my findings. I replaced the headlight housings a few years back with OEM equivalents. At that time, I installed Silverstar bulbs. The passenger housing will occassionally accumulate moisture. I have not had any...
  12. bbayne35

    Low Beams Inoperable

    The low beams (both sides) on my 2000 GT stopped working. Parking lights and high beams both work. The bulbs appear to be fine. I am diagnosing per the service manual. Both low beam fuses in the Central Junction Box (in the car) are fine. I have ~12V at these fuse locations. I checked for...
  13. bbayne35

    Leaking headlights

    Short story: My chrome, clear corner headlights from americanmuscle.com leaked, and I do not recommend purchasing from them. Long story: I needed to replace my yellowing headlights on my 2000 GT, and I liked the looks of the clear corners. I bought a pair from americanmuscle.com for $200...
  14. bbayne35

    Mach 460 Question ...

    I have to agree with hognutz on this one. Ohm's law is V=IR (Voltage = Current * Resistance). If you put in a resistor, and the current changes, the voltage will change as well. You have a slight chance of still getting a popping sound. I tried my setup without a voltage regulator, and I had...
  15. bbayne35

    Mach 460 Question ...

    I recently installed a Pioneer DEH-P7700MP in my 2000 GT with Mach 460. The Pioneer head unit is a 12 volt system while the stock head unit is a 5 volt system. The voltage mismatch is causing the popping sound. You need to wire in a voltage regulator. Radio Shack part number 276-1770 will do...
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