my 1991 z32 na 5spd all of a sudden won't rev past 4000rpm, will stall. Ran fine until I shut it off for about 20 minutes, started fine then as I was accelerating it cuts out. just filled up with gas about 4 miles before, changed fuel filter and added heet thinking I might have a shot of water in the tank. I removed via the fuel pump about a quart of gas and no water was to be found. would throttle position sensor fail that fast? I'm supposed to leave from Phoenix to Upper Penninsula of Michigan tomorrow and I need a bit of assistance, Thanks a lot if anyone can help me.