Sounds consistent with a bad TPS, but get your CEL scanned to see what the code is for sure.
FYI, the A/C system has a WOT cutoff, so if your TPS is indicating WOT, then naturally your A/C clutch would disengage.
1999 Red / Tan SVT
#1969 of 2760
Built 4/21/99
K&N, DMD, FMS Wires, ES Insert / Bushings, PF End Links
17" FSVT 5-Spokes
Factory Spoiler
35% Tint All Around
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