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Old 12-16-2018, 07:30 PM   #71
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Default Re: Water in Fuel Light WIF warning is on.

fppf total power
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Old 08-29-2019, 02:48 PM   #72
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Default Re: Water in Fuel Light WIF warning is on.

Just bought my Sprinter on Monday and drove it back home from OH. WIF light came on this morning. On my drive home I fueled up as follows:

-14.960 gallons at Shell in Findlay, OH
-21.710 gallons at BP in Western PA
-12.999 gallons at Sunoco in Eastern PA

Hoping just a drain of the water separator will resolve things.
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Old 08-30-2019, 02:09 PM   #73
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Default Re: Water in Fuel Light WIF warning is on.

Just an update: Drained the fuel. WIF light went off. Drove 15-miles home. Fueled up enroute. Light remained off. Parked the rig. This morning I drove it back to work and the WIF light came on again. Power seems normal & no sputtering, etc.
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Old 08-30-2019, 02:17 PM   #74
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Default Re: Water in Fuel Light WIF warning is on.

Did you see any water in the drained fuel? Did the fuel look cloudy? If so, you may still have water in the tank. If not, you may have a sensor or wiring issue.
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Old 08-30-2019, 05:46 PM   #75
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Default Re: Water in Fuel Light WIF warning is on.

Quote:
Originally Posted by Midwestdrifter View Post
Did you see any water in the drained fuel? Did the fuel look cloudy? If so, you may still have water in the tank. If not, you may have a sensor or wiring issue.
I don't have the drain hose (I guess it was replaced by the dealer from what I have read). Due to this, I basically drained it into some fluid absorbing pads. The light is back off. I'm going to drain some into a large bottle within the next hour or so to check the fuel quality. I'm kind of hoping it's just the sensor wiring at that tight mounting point.

Thanks,
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Old 08-30-2019, 06:44 PM   #76
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Default Re: Water in Fuel Light WIF warning is on.

Fuel looks good. No sign of contamination that I can see:

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Old 08-30-2019, 07:45 PM   #77
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Default Re: Water in Fuel Light WIF warning is on.

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Originally Posted by PAFirefighter11 View Post
Fuel looks good. No sign of contamination that I can see:
It looks good visually to me too.

I suppose that it is possible that the membrane could have separated out some water even in fuel that looks good. I don't know how much water it takes to trigger the dash light.

If all is running well, then maybe it is a harness or other problem that is triggering the warning.

Did you mention the MY of your Sprinter?

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Old 08-30-2019, 09:13 PM   #78
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Default Re: Water in Fuel Light WIF warning is on.

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Originally Posted by Aqua Puttana View Post
It looks good visually to me too.

I suppose that it is possible that the membrane could have separated out some water even in fuel that looks good. I don't know how much water it takes to trigger the dash light.

If all is running well, then maybe it is a harness or other problem that is triggering the warning.

Did you mention the MY of your Sprinter?

vic
Thanks. I do have it in my sig :) It's a 2010, though the dealership had it listed as a 2011. VIN confirms it's a 2010 per my local MB rep.

I'm going to loosen the wiring mounting location where it's real tight (per other forum posts I've seen) in hopes that this helps resolve it. I'll more than likely change the fuel filter too once I hear back from the dealership confirming they did not change it whilst at their location. I appreciate your two cents!
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Old 09-02-2019, 11:45 PM   #79
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Default Re: Water in Fuel Light WIF warning is on.

Just an update: Fuel filter was changed by the dealership from whom I purchased the truck. WIF light came on again yesterday morning. Drove 15-minutes to hike the Appalachian Trail. It was not back on when we got back from the hike 3-hours later.
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Old 12-03-2019, 12:09 AM   #80
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Default Re: Water in Fuel Light WIF warning is on.

For T1N's. WIF on? Check Fuse #17 under the steering column.

Quote:
Originally Posted by expcourier View Post
Conclusion:

I have done one of the stupid things.

I originally checked all the fuses under the seat but bypassed the under the steering wheel fuse box.
That was a mistake, imagine my surprise when I got to #17 and found it open circuit/blown fuse.
According to the wiring diagram Fuse #17 just happens to control the Engine control Relay, see attached photo.
I chased a lot of red herrings following codes surrounding a lot of our vans quirks.
I skipped a very basic test and wasted a lot of time.
I assumed a lot of things because of the drivability issue (stumbling, misfire) with the WIF light indicator coming on and the CEL also.
The reading i got from the scanner showed a flat reading of 1.6 lbs/min from the MAF even when the van wasn’t running (should have been 0.0) Actual values range up to 24 lbs/min while driving (my numbers never changed from 1.6lbs/min while driving) This had me chasing my tail. (MAF error being one of the codes)
I believe I did have contaminated fuel. During one of the stumbling/misfire events while driving, something blew that fuse.

The error codes were all related to the Engine Control Relay fuse on my 2003 OM612.

I was able to verify that my wiring was in good shape and I cleaned up the wicking fuel in the wiring loom. (Caused by fuel filter draining over the years onto that section of the wiring loom)

The other lesson is that if the WIF sensor is connected outside the filter, the light should be out. There’s no water to make the connection. (Barring a shorted circuit)

I am happy the problem is resolved and back to code free driving. Thanks for the input.
T1N17FuseWIF.jpg

vic
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