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01 s-type fuel pump problem

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Old Oct 14, 2009 | 03:16 PM
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Default 01 s-type fuel pump problem

I've got an 01 s-type 4.0 V8 that when the fuel tank goes below half a tank it will start starving for gas. When you fill it back up, it runs fine. I've dropped the tank down and it has a fuel pump module on LH side and a fuel tank sending unit on the RH side. I would guess that it pulls from both sides. AM I right???
 
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Old Oct 14, 2009 | 03:48 PM
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If I remember correctly, the LH pump feeds the RH pump, which in turn feeds the engine. The RH pump is the most common to fail. We have them for $163.73.

http://www.motorcarsltd.com/jaguar/s...pump-assembly/
 
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Old Oct 14, 2009 | 07:03 PM
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I got the tank all the way down and the LH side is actually a pickup/strainer/sending unit. and the RH side has the actual pump. I pulled mine(LH) out and it was bent from a previous repair. This actually my moms car and she is tired of being shafted. I think you guys are right that the left feeds the right. It just has the hoses connected together over the top of the tank. I hope this fixes my 1/2 full/ runs bad problem.
 
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Old Oct 14, 2009 | 11:07 PM
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Do not install a used fuel pump!!!! Bad idea. Yes you have two fuel pumps. The one that you need is the Jet pump or the transfer pump. It's on the right hand side of the fuel tank. It's function is to keep the fuel level even between the two side of the fuel tank. Both fuel pumps can be worked on by removing the lower rear seat cushion. You can change either pump without draining the fuel tank. Here is a picture of a Lincoln LS but the Jaguar is the same.
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Attached Thumbnails 01 s-type fuel pump problem-lincoln-ls-fuel-pump-access-holes.jpg  
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Old Oct 15, 2009 | 01:58 AM
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leestang66 - Don't attempt to bench test it unless you have no other choice. You risk burning it out.
 
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Old Oct 15, 2009 | 07:24 AM
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daniel that's funny....a two-holer!

I put the new one in and this morning it cranked right up. It has cranked right up in a year. So we'll hope for the best on the test ride! THanks for all the info guys. I'm a diesel mechanic and not a Jag mechanic!
 
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Old Oct 15, 2009 | 06:58 PM
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latest update....It cranked beautifully this morning went on the test drive into town and it left us!!! Had to get the rollback to take it home and order the other one with the fuel pump. Hopefully that will get it!!!
 
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Old Dec 13, 2009 | 08:03 PM
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Was this problem ever resolved?
 
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