Question about 1999 Ford Crown Victoria

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Ford running rough

Hello I have a 99 crown victoria with a 4.6 litre v8.
I barely runs, It was fine until a day ago. I have to hold my foot to the floor just to get it to sort of idle. The left side of the motor sqeels or kinda chirps when I give it gas, alomost like its missing?
I can also smell lots of fuel.

Any ideas?

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  • jayson8350 Feb 03, 2010

    Yes no fuel leaks anywhere.

  • jayson8350 Feb 05, 2010

    yes

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Verify the fuel line of the engine for fuel leaks, engine idling !!!
Repair the fuel line broken pipes or connections, and inspect again the fuel system for leaks, engine idling.

Posted on Feb 03, 2010

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Hello Jayson.
Your Crown Victoria is flooded with fuel.
Putting your foot to the floor when cranking shuts off the fuel injectors.
This is known as "clear flood mode"
There a few possibilities for the issue here.
First thing to check is the fuel pressure regulator.
Follow the fuel lines to the fuel rail and you will see a round devise mounted on the rail with a vacuum hose on it. Pull the vacuum hose off and check for fuel there. No fuel should be present at that point and the regulator will need replacing.
Also I would recommend caution running the car much further as it is possible a large amount of fuel has contaminated your engine oil and crankcase. Motor oil thinned by fuel can damage your engine and risk of a crankcase explosion can blow out gaskets and seals.
Pull your oil dipstick and see if the level is higher than it should be, thinner than it should be and if the oil has an odor to it like gasoline.
If the regulator is OK then you will need to find out what else is overfueling the engine.
This will possibly be any number of issues.
Bad sensors, shorted harness, bad computer (not likely but possible).
These will be difficult to verify without the use of a proper scan tool capable of reading the sensor outputs, not just the possible codes.
Get back to me if you need more information.

KL

Posted on Feb 04, 2010

  • FUBAR Feb 04, 2010

    Jayson.
    One more thing I should have been more specific.
    The regulator is at the back left on top of the engine on the fuel rail the injectors are attached to.

  • FUBAR Feb 04, 2010

    The sentence in the original post should read;
    "No fuel should be present at that point and the regulator will need replacing if fuel is present.

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