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Thread: fuel pump only getting 7 volts ?!?!?!? Reply to Thread
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  Topic Review (Newest First)
06-27-2019 11:19 AM
Siva283
Quote:
Originally Posted by Louie4 View Post
The one I got was from Quadratec but probably same quality. Iím keeping my old sending unit as I was happy with the larger Bosch, which can be had from RockAuto. My problem is I toasted the float level potentiometer.


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I have a 15 gallon sender for the biiger bosch and a 20 gallon for the smaller pump. I like the sender. Not the pump. After some time on the phone with Que last night its looking like the pump may have had something to do with my fried engine computer. I have 2 test left to do tonight but it looks like my computer is messed up once warm it bucks like a horse. I am getting ASD and O2 codes. I can reset the computer they are immediatly back. SO be careful with that pump.

I wonder if there is a way to protect the ECM from it so this doesnt happen to someone else.
06-27-2019 10:48 AM
Louie4
Quote:
Originally Posted by Siva283 View Post
Becareful I got the same one. Amazon right. The pump that came in to last 3 weeks. These little pumps are junk. I cant find a good OEM bosch though only these little chinese junk pumps. Unfortunatly I had to replace it with another junk Chinese pump. The sender seems decent though.


The one I got was from Quadratec but probably same quality. Iím keeping my old sending unit as I was happy with the larger Bosch, which can be had from RockAuto. My problem is I toasted the float level potentiometer.


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06-26-2019 10:37 AM
Siva283
Quote:
Originally Posted by Louie4 View Post
Ready to rock. For those who donít know YJís came with different fuel pump/sending units...see below.



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Becareful I got the same one. Amazon right. The pump that came in to last 3 weeks. These little pumps are junk. I cant find a good OEM bosch though only these little chinese junk pumps. Unfortunatly I had to replace it with another junk Chinese pump. The sender seems decent though.
06-21-2019 06:39 PM
Boojo35
Quote:
Originally Posted by bruinjeeper View Post
when prepped well, sealed, primed, painted. Proper brace framing... i dont see an issue.

Dropping the tank isn't hard - you're right. But a tedious task when compared to opening a small hatch door and having full access with the bottom of your feet on the floor.
I think we are on the same page. If I was going to go hard core like at MOAB I would do EVERYTHING possible to have a trail serviceable Jeep. I also agree that Proper materials, fasteners, attention to details, sealing, etc. can make a good access door. I just dont think that it is the normal or more explicitly, what people really do when creating an access door. I just dont believe that most of them have this much attention paid to detail. I could be wrong. Living in a salt belt state though, the proper sealing and stuff would probably be just as hard to break free, clean up properly after breaking it free in order to reseal it properly again, and then resealing it properly when putting it back down. It is debatable. Good sealing in the salt belt is not easy. Cleaning it up upon repair if it was done right flat out sucks in many cases. Just talk to a reputable windshield guy and see what they find under factory glass in the windshield frames of a lot of vehicles that are just 3 or 4 years old in the salt belt. IMO. The windshield area is easily washed and not as affected by road salt as under the vehicle.

If I had a pure rock crawling bashing hard core smashed the bottom of my tank trail rider. Great mod. One of the first that i would probably do. Beyond that, Not so much.
06-20-2019 09:29 PM
bruinjeeper
Quote:
Originally Posted by Boojo35 View Post
The only why not I have is depending on where you live and how you execute the access hatch. If done poorly and in the salt belt... You just expedited one more future rust hole in the Jeep.

I personally live in the salt belt and would only do it if I had a rig that would frequently be run in the middle of nowhere. If I had a dedicated trail rig I would do it for sure.
when prepped well, sealed, primed, painted. Proper brace framing... i dont see an issue.

Dropping the tank isn't hard - you're right. But a tedious task when compared to opening a small hatch door and having full access with the bottom of your feet on the floor.
06-20-2019 08:02 PM
Louie4
fuel pump only getting 7 volts ?!?!?!?

Ready to rock. For those who donít know YJís came with different fuel pump/sending units...see below.



Sent from my iPhone using Tapatalk
06-19-2019 06:44 AM
Siva283
Quote:
Originally Posted by Boojo35 View Post
I do not need to. As a tech, dropping a fuel tank is not that hard IMO. I previously said, it is a rust compromise in the salt belt. That covers my DD.

On my other. Not a dedicated hard core trail rig. Seriously. A lot of harder fuel tanks to drop than these.
I am with you here. 7 bolts to drop the tank and I use a transmission jack so even with 20 gallons of fuel my 10 y/o daughter put it back in 2 weekends ago 90% by herself because she wanted to go fishing and I wanted to finish my coffee. She is an awesome kid though and extremly good with vehicles. She even did most of the work setting the timing on an intermediate shaft kia motor and dont tell her but she got it right the first time. It took me 3 hours to finally get it right.

Sorry had to take a minute to brag about my kid a little
06-15-2019 08:03 PM
Boojo35
Quote:
Originally Posted by Que89YJ View Post
There's exact location and size on the forum. Search. I'm on vacation so I can't link it. It's on my work machine.

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I do not need to. As a tech, dropping a fuel tank is not that hard IMO. I previously said, it is a rust compromise in the salt belt. That covers my DD.

On my other. Not a dedicated hard core trail rig. Seriously. A lot of harder fuel tanks to drop than these.
06-15-2019 07:17 PM
Que89YJ
Quote:
Originally Posted by Boojo35 View Post
The only why not I have is depending on where you live and how you execute the access hatch. If done poorly and in the salt belt... You just expedited one more future rust hole in the Jeep.



I personally live in the salt belt and would only do it if I had a rig that would frequently be run in the middle of nowhere. If I had a dedicated trail rig I would do it for sure.



One thing to take into account when doing one is if the tank unit has to be twisted, turned, and manipulated in any direction to get the unit out.... I am saying this because some newer vehicles have access hatches that the manufacturer built into the car that do not work because of the twisting and manipulating. You still end up dropping the tank. So, careful planning on size and location to keep it from being a waste.
There's exact location and size on the forum. Search. I'm on vacation so I can't link it. It's on my work machine.

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06-15-2019 03:03 PM
Boojo35
Quote:
Originally Posted by bruinjeeper View Post
Glad its resolved.

(also want to put an access hatch in while there because why not?)
The only why not I have is depending on where you live and how you execute the access hatch. If done poorly and in the salt belt... You just expedited one more future rust hole in the Jeep.

I personally live in the salt belt and would only do it if I had a rig that would frequently be run in the middle of nowhere. If I had a dedicated trail rig I would do it for sure.

One thing to take into account when doing one is if the tank unit has to be twisted, turned, and manipulated in any direction to get the unit out.... I am saying this because some newer vehicles have access hatches that the manufacturer built into the car that do not work because of the twisting and manipulating. You still end up dropping the tank. So, careful planning on size and location to keep it from being a waste.
06-15-2019 08:48 AM
bruinjeeper
Quote:
Originally Posted by Que89YJ View Post
Quote:
Originally Posted by bruinjeeper View Post
Glad its resolved.

My fuel pump is also from factory. What is the average life expectancy on these little suckers?

I have never had a fuel issue and am curious. I have to drop the tank soon because I want to reinforce my bumper/tire carrier for peace of mind (also want to put an access hatch in while there because why not?)
There's no good answer. If it starts getting loud it's time to replace it.

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Interesting.

Thanks Que. Whisper quiet right now.
06-14-2019 09:23 PM
Que89YJ
Quote:
Originally Posted by bruinjeeper View Post
Glad its resolved.

My fuel pump is also from factory. What is the average life expectancy on these little suckers?

I have never had a fuel issue and am curious. I have to drop the tank soon because I want to reinforce my bumper/tire carrier for peace of mind (also want to put an access hatch in while there because why not?)
There's no good answer. If it starts getting loud it's time to replace it.

Sent from my SM-G955U using Tapatalk
06-14-2019 05:55 PM
bruinjeeper Glad its resolved.

My fuel pump is also from factory. What is the average life expectancy on these little suckers?

I have never had a fuel issue and am curious. I have to drop the tank soon because I want to reinforce my bumper/tire carrier for peace of mind (also want to put an access hatch in while there because why not?)
06-14-2019 01:46 PM
Louie4
Quote:
Originally Posted by Que89YJ View Post
30 to 87

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Thank you, good sir.

Well, it appears I did not know what I was doing. I jumped the relay and tested and all was good. The bad part is I backfed 12 volts into the sending unit and scorched the little potentiometer before hand.

Thus, Iíve ordered a new sending unit that will be here in a week. I figured this is what should have been done anyway.

Thanks to those who have helped me determine that I am indeed...a dingus.


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06-13-2019 05:45 PM
Que89YJ 30 to 87

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