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Old 07-08-2018, 06:11 PM   #1
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Water In Fuel

I got a SPN 97 FM 3 yellow check engine light.

From one source that is:
SPN 97 FMI 3
J1939 SPN/FMI Description: WATER IN FUEL INDICATOR VOLTAGE OUT OF RANGE HIGH

This happened after I turned the key on to start programing the LBCU display. The code was confirmed with my ScanGauge D also.

Some basic info.

1. Coach probably sat for most/all winter in Michigan with about 1/2 tank of fuel. However, don't know if it was stored indoors or outdoors.

2. I filled the tank with about 100 gallons shortly after leaving Grand Rapids MI and drove to current location where I filled it up again before getting to CG.

3. I've been sitting here about 12 days.

4. I'm not seeing any visible water in the bowl of the fuel/water separator.

I know this can be a fluke and I'm not panicking. LOL

I'm thinking I will preemptively drain a small amount of fuel into a baggie and maybe I will see something.

Any thoughts or suggestions beyond draining all the fuel and starting over? LOL
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Old 07-08-2018, 06:35 PM   #2
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Where is your water sensor? Do you have a racor separator that you can see?
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Old 07-08-2018, 06:46 PM   #3
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Drain the bowl and re-prime with the orange push button. Next thing I would do is change out the fuel filter.
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Old 07-08-2018, 07:16 PM   #4
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Quote:
Originally Posted by 10 fan View Post
Where is your water sensor? Do you have a racor separator that you can see?
Alliance. It was just replaced by dealer.
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Old 07-08-2018, 07:20 PM   #5
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Drain the bowl and re-prime with the orange push button. Next thing I would do is change out the fuel filter.
I was wondering about that button. So, If I drain it all I can prime it with that button? I'm assuming it could take several pumps to get enough fuel back into the filter. This doesn't cause a problem with air in the system?

Would the Fleetguard filter be FS1065?
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Old 07-08-2018, 07:33 PM   #6
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I was wondering about that button. So, If I drain it all I can prime it with that button? I'm assuming it could take several pumps to get enough fuel back into the filter. This doesn't cause a problem with air in the system?
Under the red/orange cap is the button, the cap just pops off. next to the cap is a 1/2" bolt (a vent), loosen that up but not out. When you're ready to re prime leave the bolt loose until fuel drips out of the vent. it took me about 8 or so pumps to fill the filter. Just changed my fuel filter last week and it worked fine and no air in the system, that's what the vent is for.


hope this helps
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Old 07-08-2018, 10:37 PM   #7
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Spartan forum has all your maintenance answers, that I post in sticky's.
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Old 07-09-2018, 07:49 AM   #8
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Spartan forum has all your maintenance answers, that I post in sticky's.
I now on the Freightliner "dark side". I just haven't decided to leave the spartan chassis group since I have 5 years experience in it.
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Old 07-09-2018, 12:15 PM   #9
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What I have done so far...

1. Drained about a cup of fuel out of fuel/water separator. Did not see any evidence of water.

2. Disconnected sensor leads to filter. Turned key on still got WIF alert.

3. Reconnected leads to filter, ran engine at high idle for several minutes and still have WIF alert.

4. After sitting overnight I turned key on and WIF code/light are gone.

5. Started motor and ran at high idle for about 10 minutes and WIF code/light came back on.

There is still no evidence that there is water in the filter. None can be seen.

So...does this indicate that somehow the sensors in the filter have a problem?

I'm holding off before a do a full drain to see if there is any consensus that the filter is bad. It was just replaced a few weeks ago.

I'm assuming that the sensor is not so sensitive that a couple drops of water would set it off. I would think that I could see a layer of water in the bottom glass area.
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Old 07-09-2018, 12:30 PM   #10
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We had the WIF codes appear shortly after leaving Nappanee with our coach. I contacted Freightliner...and they had me drain fuel. After that...I took it in to a Freightliner shop. The guy spent about 7 hours...it turned out to be a connector which was under tension from the zip ties they used to anchor the wiring bundle.

It can be a real joy to find.

It did tell me that the WIF indication defaults to alert when there is no connection. I would start with the little connector on the bowl to make sure it's clean and connected. After that...I would probably let a tech crawl around and find the bad connection. Obviously, water isn't the problem.

Freightliner might be able to email you a schematic showing connector locations. Otherwise...they use a laptop connected to the coach to help troubleshoot.
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Old 07-09-2018, 12:43 PM   #11
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Quote:
Originally Posted by C.Martin View Post
We had the WIF codes appear shortly after leaving Nappanee with our coach. I contacted Freightliner...and they had me drain fuel. After that...I took it in to a Freightliner shop. The guy spent about 7 hours...it turned out to be a connector which was under tension from the zip ties they used to anchor the wiring bundle.

It can be a real joy to find.

It did tell me that the WIF indication defaults to alert when there is no connection. I would start with the little connector on the bowl to make sure it's clean and connected. After that...I would probably let a tech crawl around and find the bad connection. Obviously, water isn't the problem.

Freightliner might be able to email you a schematic showing connector locations. Otherwise...they use a laptop connected to the coach to help troubleshoot.
Did you have to drain all the fuel out of the tank or just the filter?

This is a 4 year old coach so I am not sure that is an expectation the wiring is the issue. HOWEVER...I do see a place where related cabling and connectors are tightly bound by a zip tie. I'll deal with that and run some contact cleaner on the plugs.

THANKS!
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Old 07-09-2018, 02:56 PM   #12
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A couple things I've done since last post.

1. Removed and cleaned all connectors near the filter. This included cleaning up old dielectric grease in connectors.
2. Re-applied dielectric grease in connectors.

One thing I've learned is that one connector is for the sensor and that the other one is probably a heater. I need to take to FL about using a separator filter that doesn't have that ability.

Afer I was done I still got the WIF code. I'm not sure what parameters clear the code. Maybe time?
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Old 07-09-2018, 04:52 PM   #13
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Hey Don, the “dark side” has a 24/7 help line answered by trained techs. Its 1 800 FTL HELP. Call them with your question and have the last 6 digits of your Freightliner VIN. They may be able to help you with your diagnosis.

Tom
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Old 07-09-2018, 08:20 PM   #14
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Hey Don, the “dark side” has a 24/7 help line answered by trained techs. Its 1 800 FTL HELP. Call them with your question and have the last 6 digits of your Freightliner VIN. They may be able to help you with your diagnosis.

Tom
Got it!

I gave them a call and they suggested that I first check the sensor connection for a short. If there isn't a short then I will need to replace the bowl which has the sensor in it.
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