Lumpskie's 1989 Grand Wagoneer Build

Mitch502

Explorer
Yea, eliminating any other blockage is good. Also check for weak grounds on the pump itself...had that happen to me...ground when bad and the fuel pump was weak because of it...lol. But at least you'll know it's either the pump or the sock/filter
 

Dr. Marneaus

Station Wagoneer
I think these guys have pointed you in the right direction. Testing at the pump will tell if there's any blockage/stoppage between the pump and the carb.
Also as mentioned the sock in the fuel tank collapsing is a somewhat common culprit.

I'm running a Holley red and have been for 4 or so years. It's never skipped a beat. but then again it costs about 4x as much as the one you mentioned. When i installed mine i plumbed it all with AN hose and fittings. A smart thing was installing a filter before the pump, and I installed a serviceable clear one in the engine bay right before the carb as well so I could see what was going on. I change out the pre-filter every year or two.
 

lumpskie

Independent Thinker
I think these guys have pointed you in the right direction. Testing at the pump will tell if there's any blockage/stoppage between the pump and the carb.
Also as mentioned the sock in the fuel tank collapsing is a somewhat common culprit.

I'm running a Holley red and have been for 4 or so years. It's never skipped a beat. but then again it costs about 4x as much as the one you mentioned. When i installed mine i plumbed it all with AN hose and fittings. A smart thing was installing a filter before the pump, and I installed a serviceable clear one in the engine bay right before the carb as well so I could see what was going on. I change out the pre-filter every year or two.

So, do you have to drop the tank to check that sock on an '89? I might as well check while I install the Holley Red this weekend.

Also, looking at BJ's sending unit... is the fuel sock you guys are talking about the "fuel pickup tube filter"?
http://www.bjsoffroad.com/Fuel-Level-Sending-Unit-br1986-1991-Grand-Wagoneer_p_842.html
 
Last edited:

Bobzdar

Observer
So, do you have to drop the tank to check that sock on an '89? I might as well check while I install the Holley Red this weekend.

Also, looking at BJ's sending unit... is the fuel sock you guys are talking about the "fuel pickup tube filter"?
http://www.bjsoffroad.com/Fuel-Level-Sending-Unit-br1986-1991-Grand-Wagoneer_p_842.html

Should be able to get it out without dropping the tank. There's an access panel under the rear seat if you fold it forward, which you should be able to pull the sending unit/sock out from. You might have to remove the carpet (I don't have rear carpet installed yet so don't know how far it extends).
 

lumpskie

Independent Thinker
Should be able to get it out without dropping the tank. There's an access panel under the rear seat if you fold it forward, which you should be able to pull the sending unit/sock out from. You might have to remove the carpet (I don't have rear carpet installed yet so don't know how far it extends).

I pulled the carpet back to the cargo rails and saw this panel. Is this the one you were talking about?

 

Mitch502

Explorer
In case he doesn't answer in time, I'd say yes. Eyeball it and see if it seems to line up with the top of the tank where the pump sits. That's usually what the access panels look like...but usually they're bolted/screwed down. I guess it's old enough they used rivets instead of screws/bolts?
 

Dr. Marneaus

Station Wagoneer

lumpskie

Independent Thinker
Thanks guys! I'll drill those rivets out and take a look. Hey Bobdzar, did you just put sheet metal screws in there?
 

lumpskie

Independent Thinker
Check this out......it's 5 pages but it goes into getting into the fuel tank, I also posted about using a large axle nut socket to remove the sending unit. Page 4 is where I chime in.

http://www.fsjnetwork.com/forum/viewtopic.php?t=9766

Sent from my SM-T230NU using Tapatalk

I just finished this thread. I had a lot of good information in there. I look like blowing air back into the tank isn't a big deal. I'll do that while I'm replacing the pump, just in case.
 

thethePete

Explorer
^ It isn't, but it can leave you stranded down the road. If the sock on an older vehicle is clogged, it's usually a build up of fine rust so blowing it out will clear it for a short time but you'll be back to where you were in short order... Ask me how I know :rolleyes:
 

Bobzdar

Observer
I'm not positive but methinks hours should have an access panel under the rear seat

I didn't, somebody else did :). But yeah, there are just sheet metal screws in mine. I had to open it up to clean the sending unit connection so my fuel gauge would read (more) correctly as it was really corroded.
 

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