crown vic ridden ruff, anybody know? Options

[slvr_celica_GT_8...]

my 96 crwon vic idles ruff, and i back fires every few mintes evan after its all warmed up, my dad said its prob because the sparkplugs and wires are bad or the injectors are dirty. theres also a hole about the size of a quarter in one of the cats im guesing it could be one of these thinngs i know alot of things can cuase the thing to ride ruff and back fire i just thought id ask and see if anybody knew of anyhting else i could look for to make it stop, the cheack engine lights also on too, thanks,- kevin-

[Toyoca]

sry no help here....but i drive a 95 crown vic. it is so messed up but ive grown to love it. even when it gets out of gear and rolls backwards....everytime i come to a complete stop. makes it exciting.

[slvr_celica_GT_8...]

thats kool too see someone else with a vic mines ok besides it running ruff and the backfireing and the crappy fadded chipped paint it starts every time and runs ok thanks for the feed back

[celicaST]

i would buy a can or two of seafoam and see if that helps. put a third in the gas, throttle body (through pcv), and crankcase (but change the oil soon after). sometimes my cars idle would fluctuate a bit, so i figured my injectors were dirty. ran seafoam through it and it idles perfectly at 750 now. ive read numerous impressions on the product, all positive.

[slvr_celica_GT_8...]

yea that could work, i was gunna pull the plugs and put new ones in and get some slick 50 to run thought the motor, i discovered a missing vacuum hose so ill try that too i didnt really mine the back firing cuz it not loud or anything but the ruff idleing gets on my nerves, plus im sure its killin the gas milage on top of the fact that its a 4.6l 302 ci v8