Random Shutoff

[Detroit Dodge Dude]

I have a 92 Grand Marquis, that will, at random, just cut out. I could be pulling into a parking space, or stopped at a red light, but all of a sudden when I'm not applying gas, the engine will die. Any ideas?

[DVSNCYNIKL]

Can't really begin to give you suggestions with that little bit of info. What actions have you taken thus far to remedy the situation?

[Detroit Dodge Dude]

I have put in Fuel system cleaner, checked the O2 sensor, hooked up a diag computer to it, which returns no codes, replaced the PCV valve. That's about it.

The engine will also make a ticking sound, that, as the more I apply the gas, the faster it (the sound) gets.

Also, while idling, it appears that the RPMs will change every once in a while, liek its struggling to stay on.

[Detroit Dodge Dude]

Note on last post: I also regularly change the oil every 3000 miles, and have done all the required maintenence.

I thought it might have been a gumed up fuel system, considering the car has so few miles on it, and is so old (30,000, 1992)

[MercCougarXR7]

Hey Dude - I also own a 92 Marquis, and now have an impressive amount of knowledge from the members of this site: www.crownvic.net . I suggest taking a look at the site, and going into the 4.6L Technical forum, and posting about your car's ailments.

Now, here's what I think it 'could' be:

1. Plugs - how long ago have you changed them? I change mine out yearly with OEM Ford Motocraft Copper plugs
2. Plug wires - coil packs would cause a code to be thrown if they were bad, but not wires.
3. Dirty Mass Air Flow Sensor - sounds crazy, but it's true. If the wires are dirty, they can't tell how much the air/fuel ratio should be.
4. Plugged up Fuel Filter - restricts fuel.
5. Dirty throttle body (and or intake manifold), will cause it to stall occasionally, and cause crappy running.

Good luck!