Are my plug wires bad and if so would that cause stalling after the car is hot?
My car wants to die after a while. It'll start strong, idle smoothly, rev freely, run fine. After a while, though, it'll start to miss. It'll chug a bit. It'll probably die. I ran it at idle in the garage this past Sunday and regardless of where I set the idle it would eventually start missing to the degree that my digital rev meter was freaking out and bouncing all over the range.
The battery is new, the coil is new, the ignition amp is new, all of the sensors are new, the wiring to connect them is new, the plugs are new, the injectors have been serviced and flow cleanly, the electricity to fire them is consistent and adequate, the fuel pump is new, the fuel pressure regulator is new and confirmed to be at spec, the AFM checks out and the mix is good (if a tad rich). I've literally gone through every component and either checked/confirmed it's good or replaced it, if not.
All that's left is the plug wires, and they're $150 or so. I don't know if the plug wires on my car are original, but they are old. However, the resistance readings are all withing spec when cold. I can't seem to be able to determine if they lose conductivity or if the resistance goes wonky when they get hot. I assume MAYBE that's what's happening?
Thoughts? Every time I drive the car for more than about 15 minutes, as soon as I come to an idle stop it'll die and take several minutes to restart. Let me tell you, when that happens at an intersection at a major highway, it's not good. Not good at all.
as good as a car can be... briefly.