Auto fofd crown vic, code 341, octane adjustment pin. I FOUND THE SOLUTION TO THE PROBLEM OF THE SITUATION. YEH! On the 92 crown vic 4.6, there is a 2 wire connector in the engine compartment, on the driver side fender well,near the diagnostic test plugs. It's the one with the grey-red stripe and white-red stripe wire. there is supposed to be a jumper plug on the connector end of it. removing it causes the timing ti ****** and someone may have removed it in order to stop detonatioh or it's just gone missing. I was lucky to find one on a wrecked taxi cab at my uncles place, I can't think of any reason you couldn't just splice them together. Thanx, for bein here though guys, I sincerly appreciate what you do, eddie yose till next time, Dan Jackson

SOURCE: Radio Aux feature and not plug connection

http://www.installer.com/cars/by_car.php?carid=6330

SOURCE: rough running, erratic spark

Run a compression test on the cylinders.If reading is low on any drop a little engine oil into the pot. If compression rises you have compession ring problems. Remove all plugs before you try this and place leads away from engine.

SOURCE: Hesitation and stumbling.

Before you do that, check which thermostat it has in it, if it has one that is letting it get too warm or not completely up to temp when the computer think it should be, it would cause this. My 2000 crown vic did the same thing and thats what it was.

SOURCE: 1996 F-350 7.3 Powerstroke , truck is running good

uvch needs to be replaced, you'll have to fix this one.

SOURCE: 1999 FORD CROWN VIC. 4.6 - PROBLEM, NOISE

This is caused by the IAC valve. Over time the valve becomes gummy and inoperative. Get it replaced and the problem is solved. IAC stands for idle air control, hence the stalling concern.