Stalling. Please help

[billb]

I'm about to throw in the towel and take my 94 FWD SVX to the shop. I hate to give up, so I'm hoping someone out there can give me some advice.

Here's the problem:
Most of the time, the car runs superbly. Starts right up, idles smooth and runs strong.
Sometimes, during about the first 3 miles of driving, it will stall out. It generally starts right back up. Sometimes it starts up, sputters and stalls. But, then it will start up and run fine until it stalls again. After about 3 miles, everything is fine.

Here's what I've done:
1. Replaced air filter.
2. Replaced fuel filter.
3. Replaced all plugs.
4. Replaced all coil packs ($$$$)
5. Cleaned throttle body.
6. Cleaned fuel system (gas tank additive)
7. Replaced and set the throttle position sensor (0.51 Volts at the TPS).

Other than spending a lot of money and time, the only real change I've seen is that the transmission shifts very smooth now. I attribute this to the old TPS being set wrong.

Ok, does anyone have a good idea of what to do next? I could go for the MAF, but it's starting to get expensive and I'm just shotgunning.

By the way....THERE IS NO CEL.

Thanks,
Bill