Truck is a 1998 xlt 4x4 4.0. It started fine and I got about a mile down the road when I lost power and the motor started to run rough. I had lost power to brakes and steering by the time tried to pull over. Before I got pulled over the battery and check gage light came on. I've already confirmed the alternator and battery are good. I have spark but it's weak (orange).

Any ideas about what to check next? I'm thinking fuel filter and pump?

 

Welcome to the forum

What year Ranger and what engine?

Do the 50/50 test
Spray fuel into the engine manually; gasoline, quick start(ether), ect......
Try to start
If it starts, runs, and dies, you do have a fuel delivery problem
If it doesn't start then you have a spark or compression problem
50/50 no guessing where to look next

If its a 1983 to 2000 4cyl(2.3l or 2.5l) Ranger then timing belt could have broken, so no compression and no start

If it doesn't crank(turn over) then its a battery/alternator issue, tested or not

 

1998 4.0 4x4 xlt. Ir cranks fine, even tries to catch once every few tries. Thanks for any help you might be able to offer.

 

Do the 50/50 test