Hi all, new to the forum,


I have a 2002 Ranger, 4.0, 4x4, about 103K miles.


About a year ago I started having a problem that has me completely baffled. Most of the time the truck starts and runs just fine but every 2 weeks or so it will not start due to the fuel pump not priming. When it does that, I have to let it sit for a few hours and then every time the pump will prime as normal, and it starts right up and will run all day without issue. I'm at a complete loss if it could be a possible fuel pump problem or something else entirely. I have done all the cheap fixes I can think of, filter, relay, fuel cap but the problem persists. Has anybody encountered anything like this and found a solution?


Thank you

 

Fuel pump regulator is going bad. It part of the fuel pump assembly. If the truck sit for a long period of time, say over night, do you have an issue starting it in the Morning?

 

It starts right up in the morning. The problem happened yesterday afternoon and after sitting overnight it started right up this morning. I think it has a tendency to happen after I've already driven once in the day.