Hi there.
I have a 94 3.0/6 cyl Ranger with standard trans. I've had this problem for a while but decided I better get it fixed.
While driving long distances at highway speeds my engine suddenly loses engine power. I'll be going around 70-75 MPH and then it just starts dying out to around 35-45 mph. I try to pump the gas pedal and sometimes it jumps back up and sometimes it takes a bit (30 seconds to a minute). It does this about every 10 minutes or so, but I sometimes get lucky and it won't do it for an hour or two. It usually starts doing this after I've been driving for over half an hour at highway speeds. It never dies completely, just loses substantial power.
I changed the fuel filter even tho that was not my innitial hunch due to its intermittency.
Wouldn't think it's the fuel pump as I've heard they just die when bad.
Could it be the throttle body? Is there a way I can check this?
Anyone have any experience with this type of problem?
Thanks in advance.

 

I've been investigating the same problem on my ranger 3.0. Did you ever get it figured out?

 

Hey, I have a ,00 ranger ext cab 4x4 3.0 ffv auto trans that broke down on me in west virginia while I was on a trip I was told the cylinders 3, 4, and 5 have no compression whatsoever. I ran one today and here is the results I got.
cyl 1. 40 psi
cyl 2. 20 psi
cyl 3. 150 psi
cyl 4. 115 psi
cyl 5. 0 psi
cyl 6. same as cyl 5

Does anyone know how to fix this?

 

what the mileage? how did it run before it stopped? did it have any smoke?

 

The mileage is 171,139 It ran perfectly fine going to school in the morning and when I was going through Virginia. It did smoke but I stopped to let it cool down and I added coolant. Then got back on the highway and it died. It didn't lock up.

 

so it over heated? is the oil low? the motor won't run with that low of compression. you'll need to figure out if its the piston rings or the valves.. im guessing now its pistons, so complete motor rebuild.

 

It had plenty of oil, it didn't lock up, it did overheat. I read something about these trucks that ford designed them to kill itself if it overheated to prevent the engine from melting.