Low Fuel Light On / Full Tank / Shuts Off
#1
Low Fuel Light On / Full Tank / Shuts Off
My '04 Dodge Ram's low fuel light comes on with a full tank and the truck shuts off (while driving or in park) and will not crank. No other dash lights come on. It is not throwing any codes. The alternator and the battery are fine. Any suggestions about what may be my problem? Thanks!
#5
#6
Sounds like a fuel pump problem.
They are cheap enough and easy enough to replace I'd give that a shot.
But if you really want some proof before you go buy a fuel pump, then get a pressure test done on each rail, if you aren't getting any fuel pressure then it's a pretty safe bet that it's your fuel pump.
Could also be the sending unit....
Check out this thread:
http://www.dakota-durango.com/forum/...ad.php?t=73372
There are some other threads with your problem out there...
This one might help you with troubleshooting the sending unit:
http://www.justanswer.com/dodge/6rls...tank-full.html
They are cheap enough and easy enough to replace I'd give that a shot.
But if you really want some proof before you go buy a fuel pump, then get a pressure test done on each rail, if you aren't getting any fuel pressure then it's a pretty safe bet that it's your fuel pump.
Could also be the sending unit....
Check out this thread:
http://www.dakota-durango.com/forum/...ad.php?t=73372
There are some other threads with your problem out there...
This one might help you with troubleshooting the sending unit:
http://www.justanswer.com/dodge/6rls...tank-full.html
Last edited by Izero; 06-11-2013 at 09:18 AM.
#7
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#8
Yes it will... If you have little or no fuel pressure the truck won't ignite the Air-Fuel Mixture until it builds up enough inside the cylinder to allow for the truck to complete a few combustion cycles...
So yes it can and will cause that problem.
If you want to check your fuel system throw a fuel pressure gauge on each of the fuel rails and see where you're at.
Both of the links I provided you give you a place to look at to try and find the problem.
So yes it can and will cause that problem.
If you want to check your fuel system throw a fuel pressure gauge on each of the fuel rails and see where you're at.
Both of the links I provided you give you a place to look at to try and find the problem.
#9
I cranked my 2006 hemi off and on for about 3 minutes before I tapped the gas tank. I can assure you there was no pressure in the rails, as the fuel pump was not operating. I could have cranked it till my battery went dead. Are you saying the pcm knows the pressure in the rails and will keep the starter from engaging if the pressure isn't there?? If so, then I would agree with what you are saying, and my pcm is defective.
#10