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I have a 1996 34' Bounder with a fuel injected 454. After driving it for a while, it begins to surge under load and loses power. Tuned it up a 2 years ago when I got it, replaced the fuel filter and fuel pump (in the tank). The outside temp doesn't matter. It used to take about 2 hours of driving for it to begin acting up, but now it only takes about 1 hour. It feels like a plugged fuel filter or fuel/air related. Could it be an 02 sensor, throttle position sensor, MAF sensor? This has been been a thorn in my side for a year and a half.
You need to get a scanner that shows the various sensor values as you drive and checkit with that. There are so many sensors that could be heat sensitive and heat failured that anybody would just be guessing without doing this. Possiblitys include all your listed items and any coils, computer moduals etc under the hood and exposed to those operational stresses. God Luck
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