^Stock heat range? Can't say I've ever heard of stocker Champs fouling out like that. I had some problems with mine, but that was due to a blown plenum and a lack of driving.

I have never had a plug foul in this truck so was surprised. I was tight on cash so this wasn't what the time for any problem but thankful it was a cheap fix. have auto lite in it now. Its nice and smooth again.