Eliminating water from reaching the DPFE Sensor

[TJC]

I've been holed up recovering from disc replacement surgery, and have had a lot of time on my hands. I've been thinking about how to cure the moisture contamination issue that is causing failures of the DPFE sensor

And I came up with an out of the box crazy possible solution that I am going to run across this group. But first a question for those in the know.

How hot does the hoses and sensor become from the exhaust gases? I figure temps can't be too extreme as the hoses wouldn't stand up to the temps.

Anyway here's my crazy idea. Why not insert an old time fuel sediment bowl filled with desiccant balls in the inlet hose before the DPFE sensor. The ones that change from blue to pink when saturated with water. Heat them up to release the moisture, they turn blue, then reinstall them in the bowl. If the inlet temps are not too high the desiccants will capture the moisture.

I can run the truck and measure the hose temps which should be enough to know if the desiccants idea will work and if I need a glass or polycarbonate bowl.

I would need to modify to remove the shutoff valve and add brass hose fittings, but easy enough to do.

Or use something like this pneumatic water filter ?

Any downside to trying this crazy idea?

I'm only out $15 for the glass bowl to to try it, and if fails I simply splice the hose back together.

Thoughts ?

BTW, the neck collar and bandages came off today, and I'm free to start to increase activities "within reasonable moderation", whatever that means. I could not get a definitive answer no matter how I rephrased the question! Anyway I got me a new improved BIONIC neck. I gave the doctor an 8 on the scale of 1-10. I told hom it would have been a 10 if he had given me a set of Frankenstein Battery Posts on my neck.

He laughed at that one!

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[Bob902]

I've been holed up recovering from disc replacement surgery, and have had a lot of time on my hands. I've been thinking about how to cure the moisture contamination issue that is causing failures of the DPFE sensor

And I came up with an out of the box crazy possible solution that I am going to run across this group. But first a question for those in the know.

How hot does the hoses and sensor become from the exhaust gases? I figure temps can't be too extreme as the hoses wouldn't stand up to the temps.

Anyway here's my crazy idea. Why not insert an old time fuel sediment bowl filled with desiccant balls in the inlet hose before the DPFE sensor. The ones that change from blue to pink when saturated with water. Heat them up to release the moisture, they turn blue, then reinstall them in the bowl. If the inlet temps are not too high the desiccants will capture the moisture.

I can run the truck and measure the hose temps which should be enough to know if the desiccants idea will work and if I need a glass or polycarbonate bowl.

I would need to modify to remove the shutoff valve and add brass hose fittings, but easy enough to do.

Or use something like this pneumatic water filter ?

Any downside to trying this crazy idea?

I'm only out $15 for the glass bowl to to try it, and if fails I simply splice the hose back together.

Thoughts ?

BTW, the neck collar and bandages came off today, and I'm free to start to increase activities "within reasonable moderation", whatever that means. I could not get a definitive answer no matter how I rephrased the question! Anyway I got me a new improved BIONIC neck. I gave the doctor an 8 on the scale of 1-10. I told hom it would have been a 10 if he had given me a set of Frankenstein Battery Posts on my neck.

He laughed at that one!

Get well soon. My first back surgery went great but i have two discs in my lumbar that are pretty much non existent.

 

[Stevedbvik1]

I've been holed up recovering from disc replacement surgery, and have had a lot of time on my hands. I've been thinking about how to cure the moisture contamination issue that is causing failures of the DPFE sensor

And I came up with an out of the box crazy possible solution that I am going to run across this group. But first a question for those in the know.

How hot does the hoses and sensor become from the exhaust gases? I figure temps can't be too extreme as the hoses wouldn't stand up to the temps.

Anyway here's my crazy idea. Why not insert an old time fuel sediment bowl filled with desiccant balls in the inlet hose before the DPFE sensor. The ones that change from blue to pink when saturated with water. Heat them up to release the moisture, they turn blue, then reinstall them in the bowl. If the inlet temps are not too high the desiccants will capture the moisture.

I can run the truck and measure the hose temps which should be enough to know if the desiccants idea will work and if I need a glass or polycarbonate bowl.

I would need to modify to remove the shutoff valve and add brass hose fittings, but easy enough to do.

Or use something like this pneumatic water filter ?

Any downside to trying this crazy idea?

I'm only out $15 for the glass bowl to to try it, and if fails I simply splice the hose back together.

Thoughts ?

BTW, the neck collar and bandages came off today, and I'm free to start to increase activities "within reasonable moderation", whatever that means. I could not get a definitive answer no matter how I rephrased the question! Anyway I got me a new improved BIONIC neck. I gave the doctor an 8 on the scale of 1-10. I told hom it would have been a 10 if he had given me a set of Frankenstein Battery Posts on my neck.

He laughed at that one!

Would this

I've been holed up recovering from disc replacement surgery, and have had a lot of time on my hands. I've been thinking about how to cure the moisture contamination issue that is causing failures of the DPFE sensor

And I came up with an out of the box crazy possible solution that I am going to run across this group. But first a question for those in the know.

How hot does the hoses and sensor become from the exhaust gases? I figure temps can't be too extreme as the hoses wouldn't stand up to the temps.

Anyway here's my crazy idea. Why not insert an old time fuel sediment bowl filled with desiccant balls in the inlet hose before the DPFE sensor. The ones that change from blue to pink when saturated with water. Heat them up to release the moisture, they turn blue, then reinstall them in the bowl. If the inlet temps are not too high the desiccants will capture the moisture.

I can run the truck and measure the hose temps which should be enough to know if the desiccants idea will work and if I need a glass or polycarbonate bowl.

I would need to modify to remove the shutoff valve and add brass hose fittings, but easy enough to do.

Or use something like this pneumatic water filter ?

Any downside to trying this crazy idea?

I'm only out $15 for the glass bowl to to try it, and if fails I simply splice the hose back together.

Thoughts ?

BTW, the neck collar and bandages came off today, and I'm free to start to increase activities "within reasonable moderation", whatever that means. I could not get a definitive answer no matter how I rephrased the question! Anyway I got me a new improved BIONIC neck. I gave the doctor an 8 on the scale of 1-10. I told hom it would have been a 10 if he had given me a set of Frankenstein Battery Posts on my neck.

He laughed at that one!

Would this affect how the sensor works? It measures pressure differences and would adding this distort the reading?

 

[TJC]

Would this

Would this affect how the sensor works? It measures pressure differences and would adding this distort the reading?

I don't think so, there is no filter per se, so no restriction.

Thanks for the feedback. It is exactly what I am looking for.

I know that it is an "out of the box idea", and I am looking for all the possibilities on why it will, or will not work. And I can think of quite a few for both possibilities.

 

[airline tech]

My only concerns are:
How fast (time period) would it take for the desiccant to turn colors and how much will it affect pressure flow - its a great idea for a mod, but will need some testing as you plan.

To answer the Temp Question - Note the EGR Temp Sensor is just before the DPFE and if we use my Posting for nornal (PIDs) of the EGR System, I see that with my postings
EGR Temp @ Idle = 176 Deg F and 2,000 RPM's = 204 Deg F - so this is the temp of the exhaust gas prior to reaching the DPFE Sensor.

The full post is in the Buck Surge Thread

At Idle - Temp

At 2,000 RPM Temp

The only missing information would be the (IAT2) Temp from the MAPT Sensor as the DPFE is feeding the intake and the (IAT2) - so with EGR open they should closely match temps and a good overall temp to use at least at 2,000 RPM for guidance is 200 Deg F (Roughly) as a baseline.
Edit: one other note is that the EGR Temp Sensor is after the EGR Cooler, so this is showing how engine coolant temp affects the exhaust temp entering the intake manifold.

 

[TJC]

My only concerns are:
How fast (time period) would it take for the desiccant to turn colors and how much will it affect pressure flow - its a great idea for a mod, but will need some testing as you plan.

To answer the Temp Question - Note the EGR Temp Sensor is just before the DPFE and if we use my Posting for nornal (PIDs) of the EGR System, I see that with my postings
EGR Temp @ Idle = 176 Deg F and 2,000 RPM's = 204 Deg F - so this is the temp of the exhaust gas prior to reaching the DPFE Sensor.

The full post is in the Buck Surge Thread

At Idle - Temp

At 2,000 RPM Temp

The only missing information would be the (IAT2) Temp from the MAPT Sensor as the DPFE is feeding the intake and the (IAT2) - so with EGR open they should closely match temps and a good overall temp to use at least at 2,000 RPM for guidance is 200 Deg F (Roughly) as a baseline.
Edit: one other note is that the EGR Temp Sensor is after the EGR Cooler, so this is showing how engine coolant temp affects the exhaust temp entering the intake manifold.

Thanks for the info.

I have a sizable amount of Indicating Silica Gel Beads that are ~ the size of BBs, maybe a tad larger. Based upon the temps mentioned I am not sure the beads are a good fit, unless I can drop the temps to near 100F. I'll research other desiccants to see if I can find a more suitable fit. I do like the idea of minimizing the humidity in the EGR plumbing circuit. Maybe something like a diesel centrifugal water fuel separator may have merit. Still thinking through the possibilities.

Below are the properties of Silca Gel beads....

Silica Gel​

Silica gel is silicon dioxide (SiO2). It is a naturally occurring mineral that is purified and processed into either granular or beaded form. As a desiccant, it has an average pore size of 24 angstroms and has a strong affinity for moisture molecules. The silica gel will pull in moisture at temperatures up to 220°F (105°C). As temperature goes above 100°F, the rate of moisture pickup will slow down but the silica gel will still work.​

​

Silica gel performs best at room temperatures (70° to 90°F) and high humidity (60 to 90% RH) and will drop the relative humidity in a container down to around 40% RH. In the United States, silica gel is commonly used in food and pharmaceutical applications as only silica gel has been approved by the FDA for direct contact with these items.​

​

As with clay, silica gel, with its wide range of pore sizes, has the capability of adsorbing compounds other than water. The relative order of adsorbability is: water, ammonia, alcohols, aromatics, diolefins, olefins and paraffins. When the potential for multicomponent adsorption is present, expect the more strongly adsorbed compounds, such as water, to displace the more weakly held ones.​

​

Indicating Silica Gel​

Indicating silica gel is a silica gel bead or granule that has been washed with a concentration of cobalt chloride ( a heavy metal salt). The cobalt chloride is a deep blue color when it is dry and turns from blue to purple to pink as it becomes saturated with moisture. Typically, the color changes as the desiccant goes past 8% moisture levels (by weight) and indicates it is time to replace the desiccant.​

​

The most typical use for an indicating silica gel is for a moisture sensitive product that will be inspected regularly as it gives a quick visual indication of how well it is doing. Because of the addition of cobalt chloride, indicating silica gel should not be used in contact with products for consumption such as food or pharmaceuticals.​

​

The Dri-Box canister is packed with an indicating silica gel that is regenerable. Instead of replacing the desiccant inside, heating the canister will reverse the adsorbing action and allow the material to be reused.​

 

[dtech]

I've been holed up recovering from disc replacement surgery, and have had a lot of time on my hands. I've been thinking about how to cure the moisture contamination issue that is causing failures of the DPFE sensor

And I came up with an out of the box crazy possible solution that I am going to run across this group. But first a question for those in the know.

How hot does the hoses and sensor become from the exhaust gases? I figure temps can't be too extreme as the hoses wouldn't stand up to the temps.

Anyway here's my crazy idea. Why not insert an old time fuel sediment bowl filled with desiccant balls in the inlet hose before the DPFE sensor. The ones that change from blue to pink when saturated with water. Heat them up to release the moisture, they turn blue, then reinstall them in the bowl. If the inlet temps are not too high the desiccants will capture the moisture.

I can run the truck and measure the hose temps which should be enough to know if the desiccants idea will work and if I need a glass or polycarbonate bowl.

I would need to modify to remove the shutoff valve and add brass hose fittings, but easy enough to do.

Or use something like this pneumatic water filter ?

Any downside to trying this crazy idea?

I'm only out $15 for the glass bowl to to try it, and if fails I simply splice the hose back together.

Thoughts ?

BTW, the neck collar and bandages came off today, and I'm free to start to increase activities "within reasonable moderation", whatever that means. I could not get a definitive answer no matter how I rephrased the question! Anyway I got me a new improved BIONIC neck. I gave the doctor an 8 on the scale of 1-10. I told hom it would have been a 10 if he had given me a set of Frankenstein Battery Posts on my neck.

He laughed at that one!

Hope the neck job goes well. My neck was bothering more than usual last spring so had it evaluated-ortho MD says"did you know that your cervical disc have all fused" ? Thanks doc for enlightening me. So when in truck with wife I have successfully trained her to scan for traffic when making right hand turns, when alone I have to turn my entire upper body to see. But good to hear you have been fixed.

 

[TJC]

Hope the neck job goes well. My neck was bothering more than usual last spring so had it evaluated-ortho MD says"did you know that your cervical disc have all fused" ? Thanks doc for enlightening me. So when in truck with wife I have successfully trained her to scan for traffic when making right hand turns, when alone I have to turn my entire upper body to see. But good to hear you have been fixed.

Surgically fused or fused naturally???

I have a friend who had her entire neck fused. She does the same. But she is no longer in any pain.

 

[Dereku]

Looks like a solution born from pain meds lol. Replacement sensors are cheap enough. An inline filter might work for an air compressor. Not the paper ones, the ones that look like a pumice stone.

 

[TJC]

Looks like a solution born from pain meds lol. Replacement sensors are cheap enough. An inline filter might work for an air compressor. Not the paper ones, the ones that look like a pumice stone.

Delirium/Boredom will do that to a person!

 

[dtech]

Surgically fused or fused naturally???

I have a friend who had her entire neck fused. She does the same. But she is no longer in any pain.

they fused naturally, if I keep up with neck focused daily exercises the pain is low level, it competes with aching knees, ankles and worn out lower back. Consulted with my md regards sleeping aids and after reviewing the available options he recommended I stay with vaping 420 - and I have followed his recommendation.

 

[TJC]

Aches and pains seem to come with aging. It is good that you have found a way to manage it.

 

[My12SecRanger]

Interesting twist to this is Ford tech line is now telling techs to replace the egr tube with egr sensors for surging/bucking complaints before transmission repairs, finding condensation in egr tube giving part throttle misfires without codes

 

[TJC]

I think that MAYBE Ford is watching this Forum...

 

[Dereku]

I think that MAYBE Ford is watching this Forum...

If they were there would be a fuel in oil recall and a bed side too tall tsb.

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