Fuel filter upgrade maybe possible

[Gregj]

Out of curiosity could the thread adapter be swapped out to use a 1x14 2 micron filter like what's used on the fass system?

Yes the thread adapter is removable and you could swap to a two micron filter, problem is those filters aren’t water separators that I can find. To use a spin on filter it’s going to take two filters. The Fass drop in looks like a good option to mount two filters on one base if it will take filters that are short enough to fit under the truck.
Gregj

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[Gregj]

Looked into the FASS Drop in series and that looks like a better place to start the fuel filter replacement project. It would still require some work, namely adding the air bleed return either to the tank or the fuel filler neck. Size wise I believe it would be pretty close to the Fleece setup. Too bad I already spent the money on this one.

FASS Drop in series

Gregj

 

[Mr. J]

Looked into the FASS Drop in series and that looks like a better place to start the fuel filter replacement project. It would still require some work, namely adding the air bleed return either to the tank or the fuel filler neck. Size wise I believe it would be pretty close to the Fleece setup. Too bad I already spent the money on this one.

FASS Drop in series

Gregj

It's a fairly new version of the system but i came across this on fass's website.
https://www.fassride.com/details?id...VMzzis8GDz0zGPotyFAwOZARoWWQI06gaArbNEALw_wcB.
Reviews seem to be positive. I wonder if this could work.

 

[JTdiRtyD]

At $60 for a filter change with the FASS system, it raises the question if it's worth the cost and hassle just to have a spin on filter(s) that costs just as much as a OEM filter.

 

[Gregj]

It's a fairly new version of the system but i came across this on fass's website.
https://www.fassride.com/details?id...VMzzis8GDz0zGPotyFAwOZARoWWQI06gaArbNEALw_wcB.
Reviews seem to be positive. I wonder if this could work.

I read that and I see a couple issues with it, first it says it must be used with another filter, so still two filters. Second it doesn’t have a drain or a WIF sensor.
Gregj

 

[Mr. J]

I read that and I see a couple issues with it, first it says it must be used with another filter, so still two filters. Second it doesn’t have a drain or a WIF sensor.
Gregj

The WIF sensor I could see as a problem. They CLAIM that it doesn't have a drain because it actually traps the water instead of collect it in place for a drain to release it. I have spoken to them while building a fuel system for my 24V cummins and they say that it can in fact be used by itself, however it could change the filter change frequency because the other filter is a very high micron pre-pump filter to a.) save the pump when used in a fass system and b.) catch the giant chunks so the 2 micron filter doesn't get clogged prematurely. I've seen a FEW reviews online saying that it does in fact catch and hold the water to the point that it can clog the filter. Which makes me think that it does not in fact need the drain... but that's not a large sample size to go off.

 

[Gregj]

The WIF sensor I could see as a problem. They CLAIM that it doesn't have a drain because it actually traps the water instead of collect it in place for a drain to release it. I have spoken to them while building a fuel system for my 24V cummins and they say that it can in fact be used by itself, however it could change the filter change frequency because the other filter is a very high micron pre-pump filter to a.) save the pump when used in a fass system and b.) catch the giant chunks so the 2 micron filter doesn't get clogged prematurely. I've seen a FEW reviews online saying that it does in fact catch and hold the water to the point that it can clog the filter. Which makes me think that it does not in fact need the drain... but that's not a large sample size to go off.

Too many "ifs" in that scenario, using it by itself would lead to it premature clogging, how would you know it was clogging up? If it did the fuel pumps in these trucks don't like being run with low or no pressure. I wouldn't take the chance without some way to monitor the pressure. Banks has a module to add sensors to the iDash but that's another $400.

A good two filter system that would fit would be best and you could have a 30,000-mile or once a year filter change interval

Gregj

 

[Mr. J]

Too many "ifs" in that scenario, using it by itself would lead to it premature clogging, how would you know it was clogging up? If it did the fuel pumps in these trucks don't like being run with low or no pressure. I wouldn't take the chance without some way to monitor the pressure. Banks has a module to add sensors to the iDash but that's another $400.

A good two filter system that would fit would be best and you could have a 30,000-mile or once a year filter change interval

Gregj

Too many "ifs" in that scenario, using it by itself would lead to it premature clogging, how would you know it was clogging up? If it did the fuel pumps in these trucks don't like being run with low or no pressure. I wouldn't take the chance without some way to monitor the pressure. Banks has a module to add sensors to the iDash but that's another $400.

A good two filter system that would fit would be best and you could have a 30,000-mile or once a year filter change interval

Gregj

I plan on installing a lift pump pressure gage next time I change the fuel filter. That way I can monitor the lift pump pressure. I'm used to having to monitor fuel pressure to the injection pump anyway. I'm already planning on adding oil pressure to the Idash so it'll only cost me the sensor and the part that I have to use to get the pressure reading. I would like one as close to the CP4 as possible but I'm not against having one prefilter by installing a tee and running it with the temp sensor, or I can go full gauge nerd and have both so I can have a delta from them. The Idash adds 4 gages and I only have 2 spoken for so the sky is the limit really when it comes to that. I also am not sure that it would clog prematurely. I don't believe a 2 micron will clog much faster than a 3 micron. Worst case scenario I would carry a new filter with me under the seat just in case.

 

[Gregj]

FASS sells a jumper to make the WIF sensor circuit happy.
WIF Jumper
Gregj

 

[Mr. J]

FASS sells a jumper to make the WIF sensor circuit happy.
WIF Jumper
Gregj

Oh... that's cool. I didn't know they did that. Does that work with our trucks? I've not got a good look at our WIF sensor

 

[Gregj]

Oh... that's cool. I didn't know they did that. Does that work with our trucks? I've not got a good look at our WIF sensor

Yes, the filter housing has two connectors on it, one is for the heater and WIF light and the other, that is not used on the Ram, is the temp sensor. That connector has four wires in it, cavity’s 1 & 4 are the heater power and return and 2 & 3 are the WIF sensor. I asked Benny at Allmoparparts for the wire diagram for the fuel filter and he sent me this

 

[Mr. J]

Thank you for tackling this! I've been rolling around some ideas in my head trying to figure this out for a long time... I'd have never gotten around to this probably. With that said what fuel temp sensor did you end up using?

 

[Gregj]

Edit: not the best option for the sensor, see below.
It’s just a coolant temp sensor, just find one that fits the threads in the hole. Dakota Digital has one that is 0-300 degrees. Part # Sen-04-5.


If you don’t want to splice the wires send me a DM and I’ll send you a connector.
Gregj

 

[Mr. J]

I sure appreciate that! However, you don't have to go to all that trouble if you don't want to. I'm just so thankful that you figured out what connector it is. I'm not a "splicer" if I can help it. I'd much rather integrate into a factory harness so that I can return to stock if I have to. Have you hooked up the Dakota Digital temp sensor to see if it reads correctly?

 

[Gregj]

Ok, I’m going to revise the recommendation for the Dakota Digital temp sensor, I went out and plugged it in and the temp read too high, about 135 and the ambient temp is mid 80’s. The sensor in the housing read 86 degrees so I tried another GM sensor and it read the same so that’s probably a better option, part number 213-4514, I bought several sensors trying to find a thread pitch that would fit the threaded hole in the Fleece housing with no luck. The GM sensor is M12 x 1.5 so that is the thread pitch you’ll need.

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