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  #1  
Old 02-09-2011, 06:39 PM
RMZpilot RMZpilot is offline
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Default 1990 2.9 Fuel Pumps(s)

New to forum.

I have a 1990 ranger 2.9 that wont start, just bought it. It has a new fuel regulator, and I replaced the relay. The fuel pump (in the frame rail) makes noise when turned on but I have non existent fuel pressure at the rail. Dont see any leaks anywhere and it has a good spark. Dont even smell fuel...

Im wondering if the low pressure unit in the tank goes out if it will cause this or is it more likely the high pressure unit the frame rail trying, but not making any pressure.

Or should I just replace both of them and not worry about fuel pumps for a while... If I do replace them both and still no pressure then what?

Thanks for any insight, looking forward to a long relationship with this old little truck.
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  #2  
Old 02-09-2011, 06:44 PM
More_Cowbell More_Cowbell is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

have you replaced the fuel filter? and are you getting any fuel pressure at the rail?
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1990 Ranger Extended Cab
2.9L V6 5 Speed Transmission
Planning to put a 347 and a T-5 in it eventually

Quote:
Originally Posted by FireRanger View Post
It looks like someone attacked the front of the truck with a bedazzler.

Last edited by More_Cowbell; 02-09-2011 at 06:49 PM.
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  #3  
Old 02-09-2011, 06:50 PM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

if the low pressure pump in the tank craps out it will surely cause there to be no fuel pressure.
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2001 Ranger 4x4 Stepside
-RCD Suspension lift
-33x12.5 BFG KM2's on Mickey Thomson classic locks
-4:56 gears
-Auburn gear LS
-James Duff traction bars
-Headers
-Flowmaster duals
-SCT X-Cal2 and some small exterior mods

http://www.cardomain.com/ride/2321189

2005 F-150 Lariat 4x4
-LED third brake light
-Weathertech floor liners
-Edge tuner
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  #4  
Old 02-09-2011, 06:53 PM
RMZpilot RMZpilot is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

Just picked one up, going in first thing in the am.

Im being proactive, assuming the worste. I sure hope its that simple, it must be completely plugged if it is cause I dont smell gas in the cylinder after pulling a plug or when I release "pressure" from the fuel rail.

Ill know in the morning. Just very curious how to tell which pump may be bad if it comes to that.

----------

Is it easier lifting the bed up or dropping the tank down to service the internal? Can two guys lift one of these beds up?
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  #5  
Old 02-09-2011, 06:55 PM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

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Originally Posted by RMZpilot View Post

Is it easier lifting the bed up or dropping the tank down to service the internal? Can two guys lift one of these beds up?
i dropped the tank on my 86 when i did the pump only because i had a topper and a bedliner in it so it would have been harder to remove the bed. otherwise sliding the bed back is much easier. you shouldnt need to completely remove the bed but if you do 2 people should be able to lift it.
__________________
2001 Ranger 4x4 Stepside
-RCD Suspension lift
-33x12.5 BFG KM2's on Mickey Thomson classic locks
-4:56 gears
-Auburn gear LS
-James Duff traction bars
-Headers
-Flowmaster duals
-SCT X-Cal2 and some small exterior mods

http://www.cardomain.com/ride/2321189

2005 F-150 Lariat 4x4
-LED third brake light
-Weathertech floor liners
-Edge tuner
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  #6  
Old 02-09-2011, 07:07 PM
More_Cowbell More_Cowbell is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

taking the bed off is less of a PITA in my opinion and two guys can lift it up easily
__________________
1990 Ranger Extended Cab
2.9L V6 5 Speed Transmission
Planning to put a 347 and a T-5 in it eventually

Quote:
Originally Posted by FireRanger View Post
It looks like someone attacked the front of the truck with a bedazzler.
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  #7  
Old 02-09-2011, 07:14 PM
RMZpilot RMZpilot is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

This motor had zero mechanical noise when it was running, so hopefully this engine will hang until I can replace it with a crate motor.

I do have very small vacuum line going to nowhere under the hood. Comes out of a T above the a/c assembly on the firewall. Gotta figure out where that sucker is supposed to go.

Thanks guys!
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  #8  
Old 02-09-2011, 07:15 PM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

i doubt you will have any mechanical issues with that 2.9 its a solid motor. i tried to kill my old 86 and it just wouldnt die! lol
__________________
2001 Ranger 4x4 Stepside
-RCD Suspension lift
-33x12.5 BFG KM2's on Mickey Thomson classic locks
-4:56 gears
-Auburn gear LS
-James Duff traction bars
-Headers
-Flowmaster duals
-SCT X-Cal2 and some small exterior mods

http://www.cardomain.com/ride/2321189

2005 F-150 Lariat 4x4
-LED third brake light
-Weathertech floor liners
-Edge tuner
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  #9  
Old 02-09-2011, 07:47 PM
More_Cowbell More_Cowbell is offline
Chrome Dont Get You Home
 
Join Date: Dec 2009
Posts: 1,169
Default Re: 1990 2.9 Fuel Pumps(s)

Quote:
Originally Posted by RMZpilot View Post
This motor had zero mechanical noise when it was running, so hopefully this engine will hang until I can replace it with a crate motor.

I do have very small vacuum line going to nowhere under the hood. Comes out of a T above the a/c assembly on the firewall. Gotta figure out where that sucker is supposed to go.

Thanks guys!
if you get me a picture of the line in question i can try and see where it plugs in on my truck

and if you are getting pressure at the rail then its probably an injector problem
__________________
1990 Ranger Extended Cab
2.9L V6 5 Speed Transmission
Planning to put a 347 and a T-5 in it eventually

Quote:
Originally Posted by FireRanger View Post
It looks like someone attacked the front of the truck with a bedazzler.
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  #10  
Old 02-10-2011, 01:39 PM
RMZpilot RMZpilot is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

Put a fuel filter in it and now I have gas in the rail at least, but very little pressure.

The freaking bed has a bedliner with 8 1/2" shank eye hooks bolted thru it into the bottom of the bed with 8 rusty nasty looking nuts under the bed. This changes my plan of attack on the fuel pump Im affraid...

Is there only one pump on this thing in the tank? Im getting conflicting info, and I dont see another one anywhere on the frame rails.
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  #11  
Old 02-10-2011, 01:41 PM
More_Cowbell More_Cowbell is offline
Chrome Dont Get You Home
 
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Posts: 1,169
Default Re: 1990 2.9 Fuel Pumps(s)

there should only be one in the tank.. the body style before had two of them i belive and one was on the frame in that style
__________________
1990 Ranger Extended Cab
2.9L V6 5 Speed Transmission
Planning to put a 347 and a T-5 in it eventually

Quote:
Originally Posted by FireRanger View Post
It looks like someone attacked the front of the truck with a bedazzler.
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  #12  
Old 02-10-2011, 08:14 PM
RMZpilot RMZpilot is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

Replaced the fuel filter and got gas to the rail, but it dribbles out the vavle when it should be under pressure... New fuel pump going in tonight.

Heres that lost hose.

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  #13  
Old 02-10-2011, 10:40 PM
RMZpilot RMZpilot is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

The little hose in my hand, not the big power lead thats being yanked out behind it...

New fuel pump and the thing fires right up. It has some odd fluctuations at idle but I think its because of some intake leaks that will get fixed with a new K&N setup tomorrow. I wouldnt bother with a whole intake system but the stock air box is destroyed... Im hoping it hasnt been run long like that.

All the sensors appear to be plugged in and I have no check engine light, tranny shifts sharp and postive. I may just drive it like this for a while. Very torqey little motor down low.
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  #14  
Old 04-03-2011, 11:57 AM
Earlyboomer Earlyboomer is offline
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Default Re: 1990 2.9 Fuel Pumps(s)

I just replaced both pumps in an 86 2.9L and there is two fuel filters. One replaceable cartridge type before the frame pump and a can type after the frame pump. At 171K miles the can type was noticeably heaver than the new one.
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