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Car Forum / Mercedes-Benz Cars / February 2007Fuel GUAGE not functioning
My fuel gauge no longer show the correct amount of gas, the gauge goes to the very full then 2 minutes later goes down to the very empty, and it repeats the same thing over and over. After leaving the gas station with a full tank, the gauge shows I am on empty. Any ideas? The sender inside the tank > My fuel gauge no longer show the correct amount of gas, the gauge goes to > the very full then 2 minutes later goes down to the very empty, and it > repeats the same thing over and over. After leaving the gas station with a > full tank, the gauge shows I am on empty. Any ideas? > My fuel gauge no longer show the correct amount of gas, the gauge goes to > the very full then 2 minutes later goes down to the very empty, and it > repeats the same thing over and over. After leaving the gas station with a > full tank, the gauge shows I am on empty. Any ideas? Model and year?  SignatureRoland Franzius 1996 Mercedes C280 1 same owner. Thanks >> My fuel gauge no longer show the correct amount of gas, the gauge goes >> to the very full then 2 minutes later goes down to the very empty, and it >> repeats the same thing over and over. After leaving the gas station with >> a full tank, the gauge shows I am on empty. Any ideas? > > Model and year? > 1996 Mercedes C280 1 same owner. Could be an error message. Let check the error codes. Another source may be to much gas in tank and then a bit of vacuum in the tank. While driving, for a short moment turn the key to position 1 to switch engine off and start it again while driving (dont lock the steering wheel). The computer error restart normally erases the computer error messages. SignatureRoland Franzius >>>My fuel gauge no longer show the correct amount of gas, the gauge goes >>>to the very full then 2 minutes later goes down to the very empty, and it >>>repeats the same thing over and over. After leaving the gas station with >>>a full tank, the gauge shows I am on empty. Any ideas? >> >>Model and year? Same car, though our problem occurred only when the tank is less than half full (or empty, whatever you like to say). The car has two senders in the tank. Left side (sitting in car) is sender only and the right side comes with a pump (I don't know what pump it is since the fuel pump is behind and outside the right tank). Ours had the left one failed. The job is messy but not too difficult if you have the right tool (a 4-pin wrench about palm size). If you decide to check or fix by yourself, let me know and I will post how I did it. > 1996 Mercedes C280 1 same owner. > [quoted text clipped - 6 lines] >> >>Model and year? > 1996 Mercedes C280 1 same owner. Failed fuel senders were a common problem on that model/year due to corrosion. Later fuel senders corrected the problem. Well for $395.00 at a local Mercedes specialist (not dealer) I had it done, he had to empty the gas in clean containers, then he replaced TWO items, a right one and a left one, I do not remember the name of the TWO items. all better now. >> 1996 Mercedes C280 1 same owner. > > Failed fuel senders were a common problem on that model/year due to > corrosion. Later fuel senders corrected the problem. Those are the senders. Not bad for that price. Both senders together cost at least $200 and the labor is 2-3 hours, including draining and filling. I was playing cheap and spent some time trying to figure out which one of the two senders was in fault. The inaccurate reading in my case usually lasted no longer than 10-15 minutes and always read correctly shortly after car was parked. I finally caught a chance when the reading went wrong before coming home. I immediately took out the multi-meter and went under car to measure the resistance. The left one had open circuit. The correct range is 2 ohms (empty) to 100 ohms (full). Don't blame your specialist. He cannot afford taking the chance to save you money by replacing just one. If the other had problem later, you may think he did a lousy job. > Well for $395.00 at a local Mercedes specialist (not dealer) I had it done, > he had to empty the gas in clean containers, then he replaced TWO items, a [quoted text clipped - 5 lines] >>Failed fuel senders were a common problem on that model/year due to >>corrosion. Later fuel senders corrected the problem. |
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