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Changed sending unit fuel guage still reads full

Changed sending unit fuel guage still reads full 94 civic

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Posted on Jan 02, 2017

bluelightnin
  • 35 Answers

SOURCE: can't locate oil sending unit on civic

Your vehicle is equipped with an oil pressure switch (not a sending unit) and it is located directly above the oil filter.

Posted on May 23, 2009

richashnath
  • 1 Answer

SOURCE: empty fuel guage even when it is full honda civic 2006

it sounds as though the sender unit housed within your fuel tank is stuck or broken, leaving you with just about the only option to remove fuel tank and replace the unit unfortunately

Posted on Sep 22, 2012

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Bouncing gas guage on 94 bonneville


could be faulty gauge or sending unit in the tank. if you can get ahold of a scan tool, see if the fuel lvel reading on the scan tool agrees with the gauge. if it does than you have a faulty sending unit.if it does not than you may have a faulty gauge.

Nov 26, 2009 | 1994 Pontiac Bonneville

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1994 honda civic dx 260k miles-Gas Gauge not working


This is indicative of the FUEL LEVEL Sending Unit and it is Incorperated With Fuel Pump Thus Requires Pump Replacment

Sep 23, 2009 | 1995 Honda Civic

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Gas guage not reading accurate


Your sending unit inside of the fuel tank is probably faulty. Unfortunately you have to drop the tank to change it.

Sep 08, 2009 | 2000 Chevrolet Silverado

2 Answers

Fuel gauge not working all the time.


This is a normal concern.
The instrument cluster uses 4 different operating modes to calculate the fuel level:
Anti-slosh (default mode)
Key OFF fueling
Key ON fueling
Recovery
After a fuel fill up, the time for the fuel gauge to move from empty (E) to full (F) ranges from 2 seconds to 55 minutes depending on which operating mode the fuel gauge is in.
The default fuel gauge mode is called the anti-slosh mode. To prevent fuel gauge changes from fuel slosh (gauge instability due to changes in fuel sender readings caused by fuel moving around in the tank), the fuel gauge takes approximately 55 minutes to go from empty (E) to full (F).
The key OFF fueling mode (2 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The key must be in the OFF position throughout the entire refueling of the vehicle.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
The instrument cluster must receive a valid key ON fuel sender reading within 1 second of the key being put into the RUN position. The key ON sample readings are considered valid if the fuel sender reading is between 15 ohms ± 2 ohms and 160 ohms ± 4 ohms.
If these conditions are not met, the fuel gauge stays in the anti-slosh mode, which results in a slow to read full (F) event.
The key ON fueling mode (approximately 90 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The transmission is in PARK (P).
The key is in the RUN position.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
In key ON fueling mode, a 30-second timer activates after the transmission is put into the PARK (P) position (automatic transmissions). When the 30-second time has elapsed and at least 15% of the vehicle's fuel capacity has been added, the fuel gauge response time is 90 seconds to read from empty (E) to full (F). When the transmission is shifted out of PARK (P), the fuel gauge strategy reverts to the anti-slosh mode. The key on refueling mode prevents slow to read full events from happening if the customer refuels the vehicle with the key in the RUN position.
Recovery mode is incorporated into the instrument cluster strategy to recover from a missing fuel level input during a refueling event. Missing fuel level inputs result from intermittent opens in the fuel sender or its circuits. Recovery mode (empty [E] to full [F] approximately 20 minutes) is initiated when the following 2 conditions are met:
The instrument cluster is in the anti-slosh (default) mode.
The actual fuel level in the tank is greater than what is being displayed by the fuel gauge

Feb 18, 2009 | 1983 Mercury Grand Marquis

2 Answers

The gas guage still reads full when there is only a half tank


U are going to have to replace the fuel guage sending unit in the fuel tank, there is no other part that will cause this problem

Feb 04, 2009 | 1998 GMC Yukon

2 Answers

Digital fuel guage


yes. the fuel sending unit in the gas tank does need to be replaced

Jan 28, 2009 | 1999 Cadillac DeVille

2 Answers

Gas Gauge not reading correctly


The most likely culprit is the sending unit in the tank. They are relatively easy to change, as long as you don't have much fuel in the tank. It's a mechanical unit that has a float that raises and lowers with the fuel level, however with age, the floats can develop leaks and no longer float, of the electronic portion of the unit can go bad and not register the proper level. They are replaced and an entire unit, so it doesn't matter which happened, you will need to change the fuel tank sending unit.

Jan 11, 2009 | 2004 Ford Explorer

1 Answer

Fuel gauge


The problem is the fuel guage sending unit, this is in the fuel tank, it will have to be changed out.

Oct 29, 2008 | 2003 Honda Civic

1 Answer

Fuel gadge reading


You are going top have to pull the gas tank and change the gas guage sending unit, it is the cause of your erratic guage readings, of this I am 100% sure.

Oct 11, 2008 | 1997 Chevrolet S-10 Pickup

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