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So I’m very stumped on the issue I currently have with my truck and I just put $1,200-$1,300 in preventative maintenance into my 04.5. My truck has now stalled out while going down the road multiple times and will only start up by using fully charged batteries. I just changed both of my fuel filters in the truck and started the truck up. It fired right up but stalled out 2-3 minutes later. It sounded like it was starving from fuel. I then added another 10 gallons of diesel to the fuel tank and it fired right up. One person of the forum page suggested that it’s the sending unit in my fuel tank. That alone in itself is near $700 to replace. I am more than capable of fixing the issue if I know exactly what it is, but as of now I am at a loss. I do know there’s a piece of rubber that goes on part of the sending unit and it’s common for it to fall off. Could that cause my truck to stall out? My fuel lines are all snug and on good. I don’t see any type of fuel leak either.
I did just do an oil cooler job on my truck to replace all the seals. Could that be a partial culprit as well?
I had a problem with my truck shutting down twice and it was a wire on the MAF sensor wire rubbing against the oil dip stick tube and shorting out. It might be worth looking at.
A good test for the sending unit and debris stuck in the lines is the 5 gallon can test. Take your feed and return line into a 5 gallon can and secure it in the back and run it. I fixed mine with a $35 dollar foot and blowing out the lines. It's a little work to drop tank, but not real bad.
You seem to at a loss for data. while fuel and its pressure could be an issue, the only way to sort out the problem is by collecting data from a smartphone connection to the truck which will be under a $40 experience, and monitoring fuel pressure, which depending on the method requires mechanical skill and more funding.
If you have an issue at the sender assembly, it can be repaired for far less than $700 as noted above.
We have seen a few no starts on here after fuel filter replacements due to the water separator plug o-ring letting in air. Usually it is a no start. If the nick in the o-ring was small enough could it let the fuel system pressurize for a short time? This might explain the random shut downs? Or a nick in any other two o-rings.
so what you’re saying is take those two lines off and put them in a 5 gallon drum? If it runs fine, it’s got debris in the system causing a clog in my fuel lines?
Originally Posted by Visurveyor
A good test for the sending unit and debris stuck in the lines is the 5 gallon can test. Take your feed and return line into a 5 gallon can and secure it in the back and run it. I fixed mine with a $35 dollar foot and blowing out the lines. It's a little work to drop tank, but not real bad.
Well, you've been given a dozen or so things to consider, and the winner is...not surprisingly...Jack.
To the OP, there is nothing you should do BEFORE you read the codes and secure a data monitoring device. If you have to order a device/OBDII reader, go do that now, then come back and waste your time chasing the BoogieMan until your shipment arrives.
To be clear, you could luck into fixing it without having a clue what the thousands of dollars of computers and sensors on our trucks are designed to tell you...this tjme; but you're driving an old truck; this will happen again and again. Best $40 you'll ever spend and it works on all you other cars too.
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