Hesitation upon take off, engine has a rough idle

Will be replacing the fuel pump tomorrow. I'll update this thread with results.

I think I may have found the problem. I think the temp sensor connector wasn't making good electrical contact. I removed the connector and applied some dilectric grease to the contacts. (I had replaced this sensor a few months ago and did not use any dilectric grease on it at that time). When I took it for a test drive around the block it ran fine. I'm soooo glad I looked at that before I dropped the tank and replaced the pump! I'm cautiously optimistic that this has fixed the problem. We shall see.

Update: Well, my temp sensor connector theory was apparently just wishful thinking. We had a cold front blow through and the truck was running really bad in the cold weather. Since my truck has TBI, I don't have a nice handy fuel rail with a Schrader valve on it to check the pressure from. I went to the parts store to price out a fuel pressure gauge and the gauge kit I'd need that has the inline adapter costs as much as the new pump itself. So I decided to skip the gauge and just install a new pump. It wasn't really that big a deal. Took me three hours start to finish. That was totally the problem! It runs like a new truck now! I wish I had started with replacing the fuel pump instead of throwing other parts at the problem.

Thanks for your suggestions! You pointed me in the right direction.