Question about 2004 Dodge Ram 1500
The PO628 means your lift pump has went bad. You can try hitting on it lightly and see if it will start back up. Many replace with an holly or equivalent aftermarket pump which is much better then the original. You can find info on the web to do this. http://www.dieselperformance.com/index.php/product/index/175P. The P2509 code sounds like one of your batteries is going bad. Have them checked out and see if they are fully charged and holding a charge. Also check to make sure the terminals are clean and cables are tight.
Posted on Nov 05, 2013
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Posted on Jan 02, 2017
it doesn't have a fuel pump relay it has a fuel pump control unit and it is located on the chassis back quarter drivers side near the tube cross member for chassis on top of chassis rail near bed mount. locate the rear springs front perch and it will be above that on top of rail.
hope this helps. good luck and please ask any question you have.
Posted on Oct 25, 2009
Testimonial: "Thanx for info..no wonder I couldn't find Relay! "
remove the pump from the tank and your float should be going the sam direction as the tank not cross ways in the tank this will fix fuel guage
Posted on Aug 18, 2009
Testimonial: "Dude Thanks so much for your reply. I dropped the tank this weekend and there it was facing the wrong direction. Thanks for taking the time to respond"
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