I've got a 1993 1.9L escort wagon lx with 195k on it. It starts out good, idle sounds good, decent acceleration,etc. in the driveway but in about 10 minutes it starts running very poorly. The more gas I give it the more it bogs down. After stopping at a light on a level road I can sometimes barely move(even though its idling fine). The more gas I give it the more it bogs down. If I put it in neutral and rev the hell out of it I can put it back in gear and move again, but with very little power. The strange thing is that if I turn the key off even for about 3 seconds and turn it back on I'm back to the start state where it's running well again. Lots of power etc. but then it goes downhill again a few minutes later. Also worthy of mention is that even though it has no power it DOES NOT stall. It seems to idle just fine, it just dies when I give it gas after warm up. So far I have changed: plugs, plug wires, coil, thermostat, water pump, MAF sensor, oxygen sensor, TPS. I have also taken the oxygen sensor out before the catalytic converter to test for a plugged converter and that does not appear to make a difference. The air filter appears very clean. Disconnecting the TPS seems to make it a little better but does not make the problem go away entirely and makes the idle very high. Please help! I love this escort, but this is very aggravating and we are approaching junkyard time if this doesn't get better soon.