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ogeeez 12-26-2012 11:43 PM

03 5.9 stock
 
I thought my truck was jelling up the other night but now don't know whats going on. It would only do about 1500 rpms and then start cutting out. then when I got on a rougher road the last mile from home I could barely move and had to restart about 10 times. It seem to run better longer if I let it cycle up before cranking it. so I changed the filter and now it runs good for about a minute and then dies. when I open the water drain I hear a big wooosh of air. ??? any ideas???

steved 12-27-2012 06:33 AM


Originally Posted by ogeeez (Post 974910)
I thought my truck was jelling up the other night but now don't know whats going on. It would only do about 1500 rpms and then start cutting out. then when I got on a rougher road the last mile from home I could barely move and had to restart about 10 times. It seem to run better longer if I let it cycle up before cranking it. so I changed the filter and now it runs good for about a minute and then dies. when I open the water drain I hear a big wooosh of air. ??? any ideas???


Your lift pump has failed...the 03 and early 04 have a fuel bowl-mounted pump that will not pass fuel when they die. Geno's Garage offers a direct replacement...

ecjammer 12-27-2012 10:37 PM

I agree with steved. Your lift pump failed. Do not run it with a bad lift pump, you'll over work your injection pump. Then you're looking at bank to replace both.

gasjr4wd 01-01-2013 02:11 AM


Originally Posted by ogeeez (Post 974910)
I thought my truck was jelling up the other night but now don't know whats going on. It would only do about 1500 rpms and then start cutting out. then when I got on a rougher road the last mile from home I could barely move and had to restart about 10 times. It seem to run better longer if I let it cycle up before cranking it. so I changed the filter and now it runs good for about a minute and then dies. when I open the water drain I hear a big wooosh of air. ??? any ideas???

Sounds like lift pump... I replaced mine with a FASS pump. I think it gives a little more umph... it's just a little loud. MUCH better filters! Makes the injectors last longer.


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