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Bad fuel pump???????

self preservation

Regular Member
Joined
Apr 8, 2012
Messages
1,036
Location
Owingsville,KY
Calling all mechanics...I have a question. My 94 Ranger has been idling rough when first started, then runs fine after warming up. The other day it failed to start at all. I have changed the fuel filter a few times in the past when it failed to start and it would start fine afterwards, but even after a filter change this go round it still won't start. I believed that my fuel pump was bad so I changed it as well. Still nothing. I pulled the fuel line off of the filter on the tank side and turned the key over to see if my new fuel pump was indeed pumping fuel. It pumped a very tiny amount of fuel onto the ground then stopped. Should my new fuel pump constantly pump fuel through the disconnected fuel line? I've been told that the pump will only pump until it reaches a certain pressure, but with the line unhooked it has no pressure to build up to. Any ideas what is wrong? By the way, it's a 94 Ranger, 4.0.
 

Batousaii

Regular Member
Joined
Jun 16, 2009
Messages
1,226
Location
Kitsap Co., Washington, USA
The Ranger Station - Great website for those trucks.

I had a mid 90's ranger for a couple years, it was an ok truck. Traded on an 82 Toyota 4x4, much better (for me at least).

For rangers, one of the best sites out there http://www.therangerstation.com/
Lots of tech tips, articles, fixes, mods etc.

Hope it helps.

Bat
 

Logan 5

Regular Member
Joined
Apr 16, 2012
Messages
696
Location
Utah
IIRC isn't there a solonoid that feeds power to the fuel pump, in the Ranger? My Bronco 2 had one.
 

Grapeshot

Legendary Warrior
Joined
May 21, 2006
Messages
35,317
Location
Valhalla
IIRC isn't there a solonoid that feeds power to the fuel pump, in the Ranger? My Bronco 2 had one.
Think that a solenoids/relays are mandated safety feature on vehicles equipped with an electric fuel pump.
 

Logan 5

Regular Member
Joined
Apr 16, 2012
Messages
696
Location
Utah
My B2 was an '88 and it had an in tank pump. A '94 Ranger likely does as well.
I hate in tank pumps. major PIA to fix.
 
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