I have an 86 300E that has an issue with the throttle. When cruising at about any speed, the throttle feels like it just falls. Without moving my foot the throttle will flutter, quite badly sometimes, or just die off and then kick back in. If I go to wide open throttle, she will run there all day, or just off idle it does fine. But through the midrange of the pedal it fells like it is has short-timers and doesn't know where it is supposed to be. I was thinking that maybe the TPS is wearing out in the midrange. Any insight would be appreciated.

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Thanks, Nels
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86 300E
93 W250 4X4 Cummins Power
72 F250 Highboy
89 S-10 408ci BBC
custom V Four Chopper
77 Peterbilt 352
83 Jeep CJ-5