I recently moved further away from my work so I added about 20 miles each way. Since my fuel gauge isn't working I would fill up when the trip odometer would hit about 120. One day the fuel pressure dropped from the 40 to 20 and the car suddenly died when the odometer was reading 76. I had thought this was because of moving farther away my engine sits in the 3K range on the highway due to the 4:30's. But today after filling the tank full the same thing happened and the odometer was only reading 25. I recently replaced the fuel pressure regulator, charcoal canister, and fuel purge valve by the canister. I noticed the fuel pressure was not changing between idle, and WOT so I changed the above parts. After waiting twenty minutes the car fired up and fuel pressure was at 40 the rest of the way home. So I am thinking it has to due something with the heat. I just don't know what else to look at. Here in Phoenix we are hitting the 110's this week. Any suggestions or should I just wait til it cools down here. Thanks for the help.