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1
19th February 12:53
External User
Posts: 1
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Starting problem
I have a 97 Ford thunderbird LX with the 4.6 liter in it. Every time I go to
start it I have to wait till I hear the fuel pump shut of so the car will start. If I try to start the car before the fuel pump shuts of it will just crank and crank but not start. I checked the fuel pressure up on the fuel injector rail and as soon as I turn the ignition on the pressure goes right to 41 psi and once the fuel pump shuts of and I start the car it will stay around 38 psi or so. Any help you all can give me would be greatly appreciated , Thanks |
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2
19th February 12:53
External User
Posts: 1
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Starting problem
How about a pressure reading while cranking?
Rob |
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3
19th February 12:54
External User
Posts: 1
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Starting problem
Not sure I'm reading you right. Sounds normal unless its taking a long
time to get pressure to the injectors. In that case, perhaps it time to change the fuel filter. |
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4
19th February 12:54
External User
Posts: 1
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Starting problem
I changed the fuel filter but it still takes about 10 to 15 seconds before
the fuel pump will shut off and then the car will start |
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5
19th February 12:54
External User
Posts: 1
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Starting problem
the pressure reading while cranking was the same wether the engine started
when I let the pump turn off first or if I tried to start it with the pump still running |
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6
19th February 12:54
External User
Posts: 1
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Starting problem
If not obstruction of some sort the next guess would be the pump itself.
I drive a 97 4.6 and have never heard the fuel pump. Please post the solution when you find it. Frank |
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7
19th February 12:54
External User
Posts: 1
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Starting problem
Hmmm, maybe its something electrical. Voltage drop, injectors not
getting current when pump is going full out. |
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8
19th February 12:54
External User
Posts: 1
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Starting problem
Not even close to the same car...but had similar problem with an '86
Electra 3.8 (one of the first of the FWD Electras) Always did start...eventually...but if I let the pump run first it started right up. My interim fix action...DO it that way. Pretend it's an old diesel with the 15 second glow plugs. Much later I replaced the in-tank pump & filter sock due to an unrelated problem. Starting improved greatly. --Don Don Byrer KJ5KB Radar Tech & Smilin' Commercial Pilot Guy Glider & CFI wannabe kj5kb-at-hotmail.com "I have slipped the surly bonds of earth; now if I can just land without bending the gear..." "Watch out for those doves...<smack-smack-smack-smack...>" |
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9
19th February 14:04
External User
Posts: 1
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Starting problem
you might try a fuel pressure regulator , it is located on the fuel
rail either beside the shrader valve or on the opposit side of it , the pressure may be fine at the valve but after the reg. it might be fluctuating |
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10
19th February 15:45
External User
Posts: 1
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Starting problem
If it were my vehicle I would change the fuel filter on my ten year old car.
 mike |
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