Mileage

[1994xlt]

Find out what code it's throwing. In my experience the check engine light going on and off usually indicates a misfire. That could be a bad plug/wire/coil pack, cracked head leaking a little coolant in and fouling the plug, carbon fouling on the piston, insufficient/too much fuel pressure, other things probably.

Coolant temp sensors going bad used to be a problem, it would tell the computer a wildly inaccurate temperature and they would run really rich or really lean

Back in the day fuel pressure regulator failures were really common too and that would cause noticeable changes in fuel mileage

Not telling you to replace any parts, just do some testing.

Okay well got my truck plugged in today and it doesent have a memory so it showed no codes there gonna do a key on engine running test at work tomarrow to see if this code pops up, hopefully it does, my dad and me tried to fix this vacuum leak again because it broke off again but I’m going to get some hose at work tomarrow, I turned the truck on and this hose does nothing at all so im not sure if it’s really creating a vaccume or not or if it only does it at certain times. Anyways we pulled the plugs and noticed there old so I’m gonna get new plugs and throw them in just for peace of mind since I’m here what plugs do yall run in these older 4.0 engines? From what I’ve found there’s a few different kinds of plugs from motorcraft for them

 

[SenorNoob]

Autolite Double Platinum Spark Plug - APP105​

 

[1994xlt]

Okay well got my truck plugged in today and it doesent have a memory so it showed no codes there gonna do a key on engine running test at work tomarrow to see if this code pops up, hopefully it does, my dad and me tried to fix this vacuum leak again because it broke off again but I’m going to get some hose at work tomarrow, I turned the truck on and this hose does nothing at all so im not sure if it’s really creating a vaccume or not or if it only does it at certain times. Anyways we pulled the plugs and noticed there old so I’m gonna get new plugs and throw them in just for peace of mind

Autolite Double Platinum Spark Plug - APP105​

Okay sounds good!

 

[Shran]

Those APP105 plugs are what I use and they work great.

Where is this vacuum leak that you're talking about? That could absolutely explain the stalling and other issues.

Leaking fuel filler hose won't cause this, it might throw an evap code on a newer truck but not yours. Other than leaking fuel and being annoying in that aspect it's not the cause of your issue.

 

[7aawilson]

Hey yall, what do you guys get from your ranger I drive a 1994 ford ranger xlt extended cab with 4x4 an my god I’ve been getting 10!!!!!! 10 MILES A GALLON and I’m yes I’m not the easiest on the throttle but I’m not absolutely gunning it everywere like right now I’m at 52 miles and at a quarter tank so I think somewhere I’m loosing mpg if I’m getting 10 and the rated mpg for these was 14-16 mph I am driving mostly city driving and it is cold could that be why? I don’t know just curious about it. Thanks

I've heard it varies a ton. I have the 4l SOCH, but i can still get 22 out of it on a good day. It's the manual too