Originally Posted By: Familyguy
On cars that have wires (lots of 'em don't anymore), I change them whenever I change the plugs. I generally keep the old set until the next change just in case I lose a wire until the next time 'round.
I change the wires with the cap, plugs, and rotor. In the 88 E-150 thats about 35,000 miles. OTOH my 93 Aerostar is pushing 80,000 miles since plugs, wires, etc, have been replaced. I am wrestling with the thought of tuning it up now. I have platinum plugs in it, but I think 50,000 miles w/o a tune up would have been enough.
If someone can talk me out of it, I'd be happy to let it go until the spring.