I've got a 1997(there's no designated area for 97s) F250 CCSB 4x4 7.3 with 287k on it,and the past month or so I've been having some problems with it. About a month ago it started idling a little lower than usual and then randomly dying while idling, but it would start back up. This only occurred on the rear tank, so I had it dropped and cleaned out. It ran fine for 2 weeks, and now it's started to happen on both tanks, and sometimes even at higher speeds(55-75) it will act like it wants to die for a second but keep going. Has this happened to anyone else and do you know of the possible problems/ solutions? I was thinking maybe fuel pump but I have no idea. Thanks in advance. I've had this truck for 3 years and have rarely ever had a problem with it until now.

 

First off, you found the right forum, 97 3/4 n 1 tons are part of the 92-96 family...

The number one problem with diesel engines that causes failure is fuel delivery, so you are in the right the area. Keep in mind that most diesels have two 'fuel' pumps. One is the lift pump (low pressure) from the tank, the other is the injection pump (high pressure) to the engine. You may have 2 lift pumps, one in each tank, but I find it highly suspect that both would fail two weeks apart from each other. So I would concentrate on what the truck only has one of in regards to fuel system, and the power supplies associated with the fuel system. But that still doesn't rule out other possibilities such as sensors and the like.

In short, focus on the fuel system, willin' to bet your problem lies there somewhere.

Edit: Did some online research and now I am not sure if yours has an injection pump...