In tank Pump?
Diesel Wrench
Joined: Aug 2009
Posts: 803
Likes: 47
From: hopewell pa
to my knowledge they dont have a pump in the tank. the guy i got my truck from had to replace the lift pump the day i got my truck. he called dodge and they swore it had a in tank pump but he dropped the tank it there wasnt one.
Check the left fender for a relay. From it there would be 2 wires running to the tank, and 2 more running to the engine harness for the lift pump power. The relay in my truck is mounted near the left hood hinge.
Thread Starter
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Diesel Wrench
Joined: Oct 2009
Posts: 510
Likes: 8
well the reason im asking is because my fuel pressure is 20 to 22 at idle.
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ok i was looking under neath and i looked on top of the tank where the fuel lines go into the tank and on top you have your two fuel lines and the right beside it i seen some type of sensor right beside them and the wiring was going from the tank all the way to the motor? Is that just a sensor for the fuel level or what?
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ok just looked some more there is some type of relay theat plugs in on top of the tank and it has 4 wires running out of it going all the way to the motor?
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need some answers?
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ok i was looking under neath and i looked on top of the tank where the fuel lines go into the tank and on top you have your two fuel lines and the right beside it i seen some type of sensor right beside them and the wiring was going from the tank all the way to the motor? Is that just a sensor for the fuel level or what?
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ok just looked some more there is some type of relay theat plugs in on top of the tank and it has 4 wires running out of it going all the way to the motor?
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need some answers?
Last edited by 98dodgecummins; Jun 4, 2010 at 11:32 AM. Reason: Automerged Doublepost
Diesel Bomber
Joined: Jun 2007
Posts: 2,664
Likes: 153
From: Shingletown ca
does your truck have a factory lift pump on the block? if that is gone then your truck has an in tank pump and your better off removing it and adding a sump to the system. You will already have the tank out.
Diesel Bomber
Joined: Jun 2007
Posts: 2,664
Likes: 153
From: Shingletown ca
is this how you bought the truck? seems like you have a very good possibility that it does have an in tank pump to get that much pressure out of a ddrp. We put a different spring in mine to make my fass make 20 and it does it idle through wot
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Diesel Wrench
Joined: Oct 2009
Posts: 510
Likes: 8
i dont like my fuel pressure at 20 because when it gets their it starts having a little miss to it.
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if i didnt want maybe if i have a in tank pump could i unplug the relay so the in tank pump wouldnt work if that is what it is ?
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if i didnt want maybe if i have a in tank pump could i unplug the relay so the in tank pump wouldnt work if that is what it is ?
Last edited by 98dodgecummins; Jun 4, 2010 at 03:45 PM. Reason: Automerged Doublepost
