I am interested in getting an additional fuel pump/delivery system that will act as insurance against a lift pump failure. I don't know much about any of the systems so any input is greatly appreciated. I just don't want to be stranded somewhere with a bad lift pump.

 

Some have run the GDP 392 Kit in parallel with Stock in Tank Lift Pump.....use the 392 as primary and in case of failure, have 2 minutes to switch to the stock in tank pump.

 

Thanks,
I was also wondering about the Airdog 100. Is that similar to the GDP? I want something that is fairly easy to install and not to hard on the pocket book. I have read some threads that people are having issues with the Airdog between the 04.5 and the 05 year trucks.

 

I'm also wondering where my lift pump is on my 04.5. I think it's on the filter housing but I'm not sure. Any help is appreciated.

 

I'll tell you this from personal experience... If you run a walbro in series with your stock canister mounted pump, and the stock pump goes down, you will not get fuel. If this happens, you can re-route the fuel line straight to the CP3, but you'll need parts to do this, extra hose and couplings.

If the truck has not had the in tank pump retrograde, the canister mounted lift pump is located on the back of the canister. The best way to see it is from under the truck, or take the driver side wheel well off.

From what I understand, the AD150 can be plumbed into the stock draw straw. If you are going this route, I would either run the fuel line straight to the CP3 (is the 150 filtered?) or get a lift pump delete and run it to the back of the canister. I got my LP delete from Richard Martin at Glacier Diesel Performance.

What else do you want to know? I've been down this road a few times...

 

After looking a bit I found that my lift pump is still on the fuel filter housing. From what I understand this should make it quite a bit easier to install an after market pump. I would like to find a way to possibly still retain the OEM fuel filter and heater. I'm not sure that retaining them is even necessary. I have also considered leaving them on just in case of after market failure. Thanks for you help.

 

The Airdog 150 should not be hooked to the stock pickup. You would need to mod the pickup or install the drawstraw. The Airdog 100 comes with the fitting to connect to the suction line at the top of the fuel tank. Since you have the stock fuel pump on the housing, when ordering you need the kit for the 03-04. Some people that want to keep the heater will connect directly to the housing but then you will need the GDP big line kit to connect from the housing to the CP3.

Airdog recommends bypassing the stock filter and connect directly to the cp3, and thats what I did myself.

 

I just installed an Air Dog 100 last weekend. I kept m OEM lift pump, still working at 112K miles, in parallel. IE: I just unhooked the quick release at the fuel tank (bagged and taped that end). Pulled the banjo bolt (bagged and taped that end) and put the bolt in the cab.

My plan, if the Air Dog goes, I reconnect the quick release, plug the OEM pump back in, prime the lines and reinstall the banjo bolt. Heard the Air Dogs are very reliable so I doubt my plan will be need any time soon but it's nice to have an easy backup.

 

Did you need any extra parts for this or were you able to do with the parts provided with the ad100? I don't need to go as big as the ad150. Some pics of your bagged and taped ends would help greatly if possible.

I'm also concerned about the 1/4 tank problem. Does that apply to the ad100? I've never had that problem with the stock set up so why would it occur if the ad100 was plugged in the same way?

 

Here's how I did it:

https://www.dieseltruckresource.com/...d.php?t=242666

The difference for you would be something to bypass the stock pump. I'm not familiar with the plumbing on the filter cannister-mounted pump. Might be as simple as swapping the inputs for the stock pump/filter.

 

The canister mounted pump has a special attachment, you can't just pull it off and stick something from the auto parts store in there. There is a delete from GDP.

 

That's the ticket. Without something like that, there's virtually no way you'll run two pumps through the same feed line.

 

I understand that there is no way to run two pumps through the same line. I was wondering if I could just unplug and cap off the existing lift pump and lines. Is there enough parts in an ad100 to leave the stock parts alone and have them as a spare?

 

Well, at least not with the pre-05 factory filter-mounted pump. Most electric fuel pumps are flow-through designs. I can't imagine why Dodge went with that cannister mounted fail-closed pump. Unless you are willing to convert over and do away with the factory pump altogether like with the GDP delete thing, probably best just carry a spare stock pump.

I don't know about that. Sounds alot more complicated than it needs to be. To me, a backup system should be something you can switch right over to with minimal-to-no wrenching. JMHO.

 

Thanks for the help. I'm still a little confused if I need the canister delete or if I can just leave it there with the ad100. Also, will the 1/4 tank problem affect the ad100?