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#1
07-17-2004, 12:48 PM
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W210 - Inaccurate Fuel Level
97 E420, 80K miles... fuel gauge always reads full following renewal of the level sender. (The original sender was damaged by fuel with a high sulfur level.) Prior to sender replacement the gauge would read full at engine startup and then fall to a lower level during the drive. Now the gauge constantly indicates full; the low level warning light is functional during engine startup.
With the sender's leads disconnected the fuel gauge reads 1/4. Connected the leads to a second, new sender and manually moved the float... still the gauge reads full, regardless of the float arm's position. Is this an instrument cluster problem?? 
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#3
07-18-2004, 08:54 PM
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In my opinion yes. Or possibly a wiring problem.
A more accurate test would be to use a resistance substitution box to replace the sensor, and find out what specs to use to obtain a full reading, 3/4 reading, 1/2 tank reading, 1/4 tank and empty. These specs should be in a diagnostic manual and other sources I'm sure. The Star Diagnosis computer may also be an aid in diagnosing this problem. Gilly
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#4
07-19-2004, 09:53 PM
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Well, its definitely the instrument cluster.
Removed the existing cluster and installed a good cluster from another vehicle... gauge in transfered cluster worked properly. Installed the defective cluster in the donor vehicle.. gauge indicated full. M-B's instrument cluster for this vehicle is > $800, reman'ed and > $1200, new. Anyone repair these in the aftermarket?
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#5
07-19-2004, 10:16 PM
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Possibly. There is a place I believe someone mentioned in Florida that rebuilds R129/W140 clusters, let me try a quick search for that thread......
Gilly
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#6
07-19-2004, 10:18 PM
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Try this thread, 4th post:
http://www.peachparts.com/shopforum/showthread.php?threadid=88030&highlight=florida+instrument+cluster Gilly
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#7
07-19-2004, 10:22 PM
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Or this thread, 9th post, lists another Florida company:
http://www.peachparts.com/shopforum/showthread.php?threadid=80155&highlight=florida+instrument+cluster
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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