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Old 05-19-2020, 05:06 AM   #1
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2004 Monaco fuel gauge

Just purchased a 2004 Monaco Dynasty. Does anyone have any suggestion on my fuel gauge not being very accurate. Full tank reads 1/4. Thanks.
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Old 05-19-2020, 06:06 AM   #2
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The fuel level sending unit may be able to be calibrated.

Here is a link to the site
CENTROID PRODUCTS - Electronic Fuel and Water Senders
and the calibrating page for 3 wire

http://www.centroidproducts.com/zIns...l-oldstyle.pdf

or for a programmable type

http://www.centroidproducts.com/zInstallAndCal-prog.pdf
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Old 05-19-2020, 06:47 AM   #3
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Note your mileage when you fill up. On ours 250 miles = 1/4 tank. We usually fill up at half a tank.
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Old 05-19-2020, 07:25 AM   #4
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I actually purchased the Silverleaf interface and downloaded the software to a small laptop. The Silverleaf monitors all the vitals of the engine and transmission along with trip information including fuel consumption. It is very accurate and I only have to account for additional usage if I'm using the generator, usually add ~1/2 gallon per hour for this.
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Old 05-19-2020, 05:33 PM   #5
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Quote:
Originally Posted by bob7889 View Post
Just purchased a 2004 Monaco Dynasty. Does anyone have any suggestion on my fuel gauge not being very accurate. Full tank reads 1/4. Thanks.
Bob....without seeing photos of your coach, I'll give you the info I used for adjusting the gauge on my 2005 Diplomat.

The tank runs side to side, between the two fuel doors (driver and passenger). Typically, the panel that contains the fuel door, on both sides, is not a regular bay door, but it does open. You should be able to see hinges along the top edge. If you look under the panel, there are two tabs, screwed down to the body. Remove the screws and the panel will lift up. You'll need a broom handle to hold it open.

On the driver's side, when you open that panel, or you may even have a bay door, you'll find the fuel sending unit on the top of the tank, about 18 inches in from the edge of the coach. It's a Centroid as described above. It's adjustable, but you'll probably have to clean the undercoating spray off of the screws. On my 2005 Diplomat, I initially adjusted it to read the way I wanted it to.....needle more to the right when full. A few years later the sender quit. I adjusted it again and it worked until I sold the coach after10 years of ownership.

So....try and adjust it first, before replacing it. Again, the link provided in the post above, has adjustment instructions as you arrow through the website.
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Old 05-20-2020, 01:04 PM   #6
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Congrats on buying a Dynasty... great MH and a pleasure to drive if you do not oversteer it. With the engine off you should not have more than 1/2” free travel in the steering wheel... can be adjusted.
After about 10 years the sending unit needs sent off and rebuilt. The Aladdin fuel usage in my 04 Dynasty was very accurate so between it and miles driven, I stopped looking at the fuel gauge which was very erratic. The tank is 120-130 gallons (130 if you lean the MH to one side) so at 700 miles (100 gallons) it was time to get fuel. Works better to fuel on drivers side and lean to the right...otherwise the bottom of the fill nipple is lower than the top of the tank.
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Old 05-24-2020, 09:06 PM   #7
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Quote:
Originally Posted by jacwjames View Post
The fuel level sending unit may be able to be calibrated.

Here is a link to the site
CENTROID PRODUCTS - Electronic Fuel and Water Senders
and the calibrating page for 3 wire

http://www.centroidproducts.com/zIns...l-oldstyle.pdf

or for a programmable type

http://www.centroidproducts.com/zInstallAndCal-prog.pdf
This is the greatest site EVER! I am interested in a Monaco with a bad fuel gauge and here in black and white is everything I need to know about how to diagnose, fix and even where to order parts if needed. Thanks Guys!
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