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Anti slosh module

Fuel gauge no work

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

slfowler29
  • 51 Answers

SOURCE: searching for electrical circuit of anti-slosh module

It is in the guage cluster, should be a part of or connected to the fuel guage.

Posted on Mar 24, 2009

  • 541 Answers

SOURCE: Bouncing fuel gauge

make sure your ground from the sending unit in the tank is good. it is usally rusty a few years from being on the road. you will need to remove it. put a new end on it and reattach it if it is rusty. if it is not rusty you need a new sending unit in the gas tank.

Posted on Oct 05, 2009

chaos900rr
  • 20 Answers

SOURCE: 2001 Chevrolet Silverado 1500. Can't find anti-slosh module

I've never had to replace one, but I do know that it is somewhere in the guage cluster. Although, chevy trucks have always had a problem with the fuel guage "floating" up and down.

Posted on Jul 15, 2012

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1 Answer

Does the 1993 dodge Dakota have an anti slosh module for the fuel gauge


The fuel sending unit inside the tank just has an arm attached to a float which raises/lowers depending on fuel level. The tank itself will have internal dividers that help prevent sloshing of the fuel. There is no module to control sloshing

Sep 19, 2015 | 1993 Dodge Dakota

1 Answer

Where is the anti slosh module in a 1988 mercury grand Marquis ?


Anti slosh module? I've never heard of that. If there is such a thing, it must be on the fuel level sending unit in the tank. It is usually the sending unit at fault when the gas gauge stops working.

Here's how to check if the problem is the sending unit or the gauge in the cluster: you will need a helper to watch the gas gauge needle. Pull the electrical connector apart at the tank, find the gas gauge wire. The power wire for the fuel pump is pink and black, and the ground for it is a black wire, so the fuel sender wire should be a different color. When you figure out which wire is for the gas gauge, turn the key to on, and take a jumper wire and ground the gas gauge wire to the frame. Have a helper watch the gas gauge needle when you ground the wire: the needle should move perceptibly. If it does, the gauge in the cluster is good, and the problem is with the sending unit in the tank. If grounding the wire does not make the needle jump, the problem may be the gauge in the cluster. Be sure that you have made a good contact with ground with the jumper wire.
There is a small match box size voltage regulator on the back of the cluster. This sends low voltage (about 5 volts) through the gas gauge and on to the wire going to the tank. When you ground this wire, it should cause the gauge needle to go either to full or to empty, but you should see the needle move. Remember, key on, then ground the wire. Any movement of the needle means the gas gauge is probably good, and the problem is the sending unit in the tank.

Oct 24, 2014 | 1988 Mercury Grand Marquis

1 Answer

I have a 1992 Mercury Grand Marquis Ls with a fuel gauge that does not work (gauge may be reversed)??? help please.


The fuel level indicating system is a magnetic type system, which consists of the sending unit located in the fuel tank, an anti-slosh module located on the back of the instrument cluster, and a fuel gauge located in the instrument cluster. The sending unit changes resistance according to the level of fuel in the fuel tank, which varies the current flow through the gauge.The pointer position varies proportionately to the current flow. In this system, the sending unit resistance is low (22 ohms) when the fuel level is low and high( 145 ohms) when the fuel level is high. The pointer of the magnetic gauge remains in position when the ignition is turned to the Off position. On some models, an anti-slosh module is used to dampen out fluctuating fuel signals from the sender. Some vehicles are equipped with a low fuel warning indicator. The anti-slosh module will also actuate the low fuel indicator when the fuel level in the tank reaches 1/16 to 1/8 full.


Do your other gauges/warning indicators work properly with the ignition on? If not, check for power at the fuse panel/fuses.

If they do then partially remove your cluster with connector still installed and check for voltage at cluster connector and gauge. Check continuity of cluster and gauge for ground.

Sometimes the anti-slosh module (if installed) goes bad in the Grand Marquis but not likely.

Sender troubleshooting:
  1. Perform test with resistors as follows:
    1. Disconnect wiring connector at sender unit, then connect resistor between gauge lead and a suitable ground.
    2. Turn ignition switch to On position.
    3. With 145 ohm resistor, the gauge pointer should contact the Full mark.
    4. With 22 ohm resistor, the gauge pointer should contact the Empty mark.
  1. Perform test with fuel sender of known quality as follows:
    1. Turn ignition to Off position.
    2. Disconnect wiring connector from sender and connect it to test sender.
    3. Move float rod away from fuel filter against Full stop position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or above the Full mark.
    4. Move float rod toward fuel filter against Empty stop position. Turn ignition switch to Off position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or below the Empty mark. If gauge works properly replace sender, which involves dropping fuel tank.

Mar 23, 2013 | 1992 Mercury Grand Marquis

1 Answer

2001 Chevrolet Silverado 1500. Can't find anti-slosh module


I've never had to replace one, but I do know that it is somewhere in the guage cluster. Although, chevy trucks have always had a problem with the fuel guage "floating" up and down.

Jul 15, 2012 | Chevrolet Cars & Trucks

1 Answer

Fuel gauge changes the amount of gas shown on dash gauge when below half. with engine running in park, gauge went from half to full then to light signaling low. put gas in tank(5 gallons)now shows over...


The fuel sender is in the tank and is part of the fuel pump module ( all in one). the fuel sender is a rheostat and is like a dimmer switch in you home to dim lights, the higher the level of fuel the more voltage the computer sees hence the lower the fuel the lower the voltage it sees. With the age of the car this is likely the problem. But there is a part in the instrument cluster that reads this voltage and sends power to the gauge intermittently. In older cars it was called a anti slosh module. It was there because as the car went up and down a bumpy road the gauge would read erratically. the cost can be prohibitive to fix this but if you can live with it i would. If not expect to spend 600 dollars or more to trace it down and fix it.

May 08, 2011 | 2003 Buick LeSabre

1 Answer

Fuel guage wiring from tank to dash not responding in a restored 88 crown vic interceptor do you have a wiring diagram or just some hints as to the wherabouts of all the connections between the two. A...


It kind of sounds like the Anti-Slosh Module. The fuel gauge is connected to the fuel gauge sender through the Anti-Slosh Module. The sender is a variable resistor connected to the float in the fuel tank which determines the amount of fuel in the tank Anti-Slosh Module. The Anti-Slosh Module provides a delay circuit to the fuel gauge which prevents the fuel gauge from fluctuating due to excessive movement of gas in the fuel tank. The Anti-Slosh Module is part of the instrument cluster and to replace it, you will need to replace the instrument cluster. I had to do one when I worked at Ford on one of their cars.

May 18, 2010 | 1988 Ford Crown Victoria

1 Answer

Guage replaced. Fuel sender checked and working fine. guage reads empty all the time.


Check the anti slosh module in the instrument cluster.It could be that or the gauge. If there was an open it would read past full.

Feb 24, 2010 | 1989 Ford Mustang

1 Answer

Bouncing fuel gauge


make sure your ground from the sending unit in the tank is good. it is usally rusty a few years from being on the road. you will need to remove it. put a new end on it and reattach it if it is rusty. if it is not rusty you need a new sending unit in the gas tank.

Oct 04, 2009 | 1998 Chevrolet Tahoe

1 Answer

97 mercury marquis digital fuel gauge


Sounds like the anti-slosh module is going bad.

Mar 25, 2009 | 1997 Mercury Grand Marquis

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

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