My '99 4.6L F150 was/is missing under load and it was suggested here that the plugs & wires should be replaced. Well, I replaced the PVC valve and the problem stopped, but it also got cold out. Two days later the weather warmed and the missing came back, the weather turned cold again and the truck stopped missing. I haven't replaced the plugs and wires yet because I had to do a brake job and couldn't afford both. Considering the cost of new plugs & wires, I want to be reasonably sure that new plugs & wires will stop the missing. Would cool/cold weather (40 degrees or colder) stop a truck missing if it were because of bad wires/plugs?
- posted
20 years ago