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Old 06-04-2013, 09:30 AM   #31
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When I get out of work today I'm going over to test fuses and whatever else I can figure out.

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Old 06-04-2013, 11:38 AM   #32
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All fuses check good.Also when I press in the valve on the fuel rail it doesn't spray like my stepdads yj does.Also been hearing a lot about the crank position sensor would that be likely for my problem

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Old 06-04-2013, 12:21 PM   #33
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Your fuel pump isn't even cycling on when you first turn the ignition switch on as it is supposed to, that problem would not be caused by a defective crankshaft position sensor. So at this point, I'd say the CPS has nothing to do with the problem. I'd verify the connector to the fuel pump is firmly connected where it attaches on the driver's side of the gas tank & if it is, I'd pull the trigger for a new fuel pump.
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Old 06-04-2013, 12:30 PM   #34
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Ok heres my question Ive never done this and dont know but heres what im finding at auto store.Now do I need the whole assembly or can I just get this in the link and change out that part and be ok?Trying to save money since its tight right now I know the right thing should be yes but is it ok do just change that?Or is it even possible to change just the pump.


Precision Fuel Pumps E16022 - In-Tank Electric Fuel Pump | O'Reilly Auto Parts
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Old 06-04-2013, 12:37 PM   #35
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I haven't personally replaced just that module, I have only replaced the entire fuel pump. Check out the pricing for more complete fuel pumps at RockAuto Parts Catalog if you're not comfortable with taking the OE fuel pump apart to replace that module.
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Old 06-04-2013, 01:15 PM   #36
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I replaced just he pump on mine. It has a Bosch pump on it from the factory, so that's what I replaced it with. Advance Auto carries them. It wasn't hard to replace, there's even a video on youtube.

Guessing at it being a CPS problem is just that, a guess. Diagnosing automobile problems is no different from diagnosing anything else. I work on computers and the diagnostic method itself is exactly the same.

As Jerry said, the fuel pump should cycle for 2-3 seconds after you turn the key on. Don't get ahead of yourself by assuming anything. Too many people make that mistake and then they'll say "I've replaced everything and the problem is still there!". That comes from guessing instead of diagnosing. I know, I was one of those people at one time. Follow logical steps and don't get ahead of yourself.

It sounds like you're unsure of where the plug to the fuel pump module is located and may have trouble disconnecting it when you find it. I'll see if I can round up a picture or something.

Don't get discouraged!
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Old 06-04-2013, 01:49 PM   #37
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Originally Posted by s14sh3r View Post
I replaced just he pump on mine. It has a Bosch pump on it from the factory, so that's what I replaced it with. Advance Auto carries them. It wasn't hard to replace, there's even a video on youtube.

Guessing at it being a CPS problem is just that, a guess. Diagnosing automobile problems is no different from diagnosing anything else. I work on computers and the diagnostic method itself is exactly the same.

As Jerry said, the fuel pump should cycle for 2-3 seconds after you turn the key on. Don't get ahead of yourself by assuming anything. Too many people make that mistake and then they'll say "I've replaced everything and the problem is still there!". That comes from guessing instead of diagnosing. I know, I was one of those people at one time. Follow logical steps and don't get ahead of yourself.

It sounds like you're unsure of where the plug to the fuel pump module is located and may have trouble disconnecting it when you find it. I'll see if I can round up a picture or something.

Don't get discouraged!
A pic would be great I see a plug there but I don't have the tank off yet.I'm sure its not that hard of a job to do.Just hope that's the problem seems like it is though.
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Old 06-04-2013, 02:06 PM   #38
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The only electrical plug that connects through the gas tank skidplate on the driver's side is for the fuel pump. Push on it to make sure the plug is solidly seated & if the fuel pump doesn't turn on then off after that when you cycle the ignition switch on, odds are good the fuel pump itself is bad.
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Old 06-04-2013, 02:30 PM   #39
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Here's a good write up on replacing the pump: DailyDrivenTJ-Fuel Pump Repair

Here is a picture of the connector


The red tab in the middle of the connector locks the two halves together. Push it to one side to unlock. It will only push one way. I personally would verify that the pump is getting power before dropping the tank. When you unplug the connector, you can pull the harness out of the clips that hold it and you will have enough slack to pull it out from under the jeep. It makes it a hell of a lot easier to test that way. Find the black wire and the green wire with a yellow stripe. Those are your ground and positive, respectively. connect the leads from your multimeter or test light to them and turn the key on. You should get 12+ volts for 2 to 3 seconds.
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Old 06-04-2013, 02:39 PM   #40
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Originally Posted by s14sh3r View Post
Here's a good write up on replacing the pump: DailyDrivenTJ-Fuel Pump Repair

Here is a picture of the connector

The red tab in the middle of the connector locks the two halves together. Push it to one side to unlock. It will only push one way. I personally would verify that the pump is getting power before dropping the tank. When you unplug the connector, you can pull the harness out of the clips that hold it and you will have enough slack to pull it out from under the jeep. It makes it a hell of a lot easier to test that way. Find the black wire and the green wire with a yellow stripe. Those are your ground and positive, respectively. connect the leads from your multimeter or test light to them and turn the key on. You should get 12+ volts for 2 to 3 seconds.
Thank you for the info going to head back over here in awhile I'll test the plug.
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Old 06-04-2013, 06:15 PM   #41
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Plug testing OK looks like I'll be ordering a pump.
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Old 06-05-2013, 02:22 PM   #42
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I just ordered a sending unit from amazon. It cost me 145.00.
the fuel pump alone as almost that much anywhere else.
I got the spectra premium sending unit.
I have an old sending unit that needs a new filter, could sell it to you
it works but no guarantee's on how long. It has 89k miles on it
p.m. me if your interested
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Old 06-05-2013, 03:19 PM   #43
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I just ordered a sending unit from amazon. It cost me 145.00.
the fuel pump alone as almost that much anywhere else.
I got the spectra premium sending unit.
I have an old sending unit that needs a new filter, could sell it to you
it works but no guarantee's on how long. It has 89k miles on it
p.m. me if your interested
Wish you were in Indiana I have to get one tomorrow and the whole fuel pump assembly here is $250.00 to 300.00 o.0
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Old 06-05-2013, 03:22 PM   #44
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Have you checked out the pricing at RockAuto Parts Catalog as I suggested above in post #35?
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Old 06-05-2013, 03:28 PM   #45
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Have you checked out the pricing at RockAuto Parts Catalog as I suggested above in post #35?
Yes I have guess I should check and see how fast it can be delivered.
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Old 06-05-2013, 03:30 PM   #46
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Have you checked out the pricing at RockAuto Parts Catalog as I suggested above in post #35?
Which would you recommended from there?If you ever get time to check it out.
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Old 06-05-2013, 03:43 PM   #47
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Also I'm not 100 percent sure what size the tank is 15 or 19 it does have the 4.0
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Old 06-05-2013, 04:02 PM   #48
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What about this one like I sad money is tight trying to get this thing going need my jeep back bad riding the bike is getting old.

PRECISE Part # 402P7115MN

I couldnt get it to link for some reason
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Old 06-05-2013, 04:18 PM   #49
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Unless your TJ is a very basic stripped down model, your gas tank is very likely the 19 gallon version. Few actually came with the 15 gallon tank.
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Old 06-05-2013, 04:39 PM   #50
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Unless your TJ is a very basic stripped down model, your gas tank is very likely the 19 gallon version. Few actually came with the 15 gallon tank.
Basic stripped down?Sorry I'm dumb on this stuff its factory sahara with AC no power windows or locks or anything. Tried Google but keep coming up with 15 or 19
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Old 06-05-2013, 05:14 PM   #51
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Old 06-05-2013, 06:36 PM   #52
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Basic stripped down?Sorry I'm dumb on this stuff its factory sahara with AC no power windows or locks or anything. Tried Google but keep coming up with 15 or 19
A Sahara with a/c is far from being a stripped down model. 99.9999% chance it has the 19 gallon tank.
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Old 06-06-2013, 08:30 AM   #53
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Going to attempt this tonight.
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Old 06-06-2013, 10:10 AM   #54
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Go get a big strap wrench today to make tonight's job much easier. The fuel pump is held down into the gas tank by a big plastic/nylon lock ring which isn't easily removed without a strap wrench. Lowes, Home Depot, etc. will have them in the bigger size needed in their plumbing departments, I never saw any big enough in their tool departments.

Like this...



You can see how large that lock ring is in the below picture, it's that big white ring.
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Old 06-06-2013, 11:49 AM   #55
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Thanks 3 more hours of work left then off to get it done.I'll update later.Thanks a lot guys for the help.
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Old 06-06-2013, 01:40 PM   #56
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Go get a big strap wrench today to make tonight's job much easier. The fuel pump is held down into the gas tank by a big plastic/nylon lock ring which isn't easily removed without a strap wrench. Lowes, Home Depot, etc. will have them in the bigger size needed in their plumbing departments, I never saw any big enough in their tool departments.

Like this...



You can see how large that lock ring is in the below picture, it's that big white ring.

That would have helped tremendously when I did mine. I can think of several other times I could have used one of those. I need to remember to get one next time I got to Lowe's.
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Old 06-06-2013, 02:35 PM   #57
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I took my ring off with a small block of wood and a small hammer.
amazon.com has your fuel pump for 145.00.
Amazon.com: Spectra Premium SP7115M Fuel Pump Module for Jeep Wrangler: Automotive
I will ship you mine for 80.00
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Old 06-06-2013, 05:33 PM   #58
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All done guys yee hoo she's up and running.
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Old 06-06-2013, 05:36 PM   #59
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Awesome, good work!!!
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Old 06-06-2013, 05:41 PM   #60
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Good deal!

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