Question about 1996 BMW 318

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My fuel gage does not work properly,where do i find the sensor so i can check the connection.When i start vehical it registers full then to empty

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The fuel gauge is actually fed information from the intank pump. you have two as the tank straddles over the rear dif etc. the one you need to remove is located behind the passenger seat under the rear bench. about 6 screws hold a circular plate down, and below is the pump etc. be careful as there will be a bit of fuel in the line.....but in all, about 25 mins to change. Usually the cause is a snapped wire.

Posted on May 11, 2011

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Posted on Jan 02, 2017

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My temperature & fuel gauge doesn't work how to troubleshoot


To troubleshoot, I need year--make--model, vehicle sold in the US.
I'd check the coolant temp sensor and wiring circuits. The same thing for fuel gage sending unit. Sometimes for the fuel gage sending unit, I get a couple of resistors one represents empty, the other represents full. If the gage reacts properly then the problem should be the sending unit in the gas tank.

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2004 trailblazer...fuel guage tags full when empty....rears Reads empty when full...changed fuel sending unit...no fix....replaced instrument cluster....no fix. Help


Have the vehicle check for DTC'S - diagnostic trouble codes ! The sending unit is an input to the PCM - engine computer . The PCM sends this info to the instrument cluster over class 2 serial data network . Do you know anything about class 2 communication's network . The ideal way to diagnose a problem like this , check for codes , view data on scan tool . Buick Class 2 Operation Diagnosis 1998

Fuel Gage
The instrument panel cluster (IPC) displays the fuel level as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the fuel level percent. The fuel gage defaults to empty if:
• The ECM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of serial data communications with the ECM.
When the fuel level is less than a pre-determined value, the IPC illuminates the low fuel indicator.

DTC P0463

Install a scan tool.
Turn the ignition ON, with engine OFF.
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Feb 19, 2017 | Cars & Trucks

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My gas gauge is stuck how do I fix it on a 1970 olds delta 88


if you disconnect the wire at the sensor or down from the sensor were you can get to it the gage should register empty and if you disconnect the ground it should register full. if nothing happens then the gage on the dash is bad, if gage moves the fuel level sensor in the tank is bad.

Aug 24, 2014 | Cars & Trucks

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Fuel gage does not work. The gage will read full but after driving for about 30 miles it will read empty & the light chimes on.


sounds like a bad float / sensor or just a bad ground.
Check the connections where the fuel pump goes into the gas tank. Make sure the ground is good and solid and not rusty. If wiring is good the float is probably bad

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Gas Gage is unstable. One moment it registered that the tank is completely full and then moments later it shows it is completely empty and then it jumps up to being mid level. Is there a problem with the...


the fuel level sensor is bad. I would recommend replacing the Fuel Pump Module which will be a new pump and fuel level sensor. If its been replaced already, sometimes using Chevron Fuel Injection Cleaner TECHRON will clean the contacts and MAY get it working again.

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You will need to remove the fuel tank from the truck and replace the fuel pump/fuel level sensor module that is inside the fuel tank. Use extreme caution when doing this as there is a real fire hazard.

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Fuel guage pegs high at start then goes to empty


Jason, as far as the fuel gage, try a couple of resisters at the wiring for fuel gage sending unit, in gas tank. It's two wires, use the resister inline between the two wires. One resister is for low fuel level, the other for high fuel, If the gage reacts properly to both resisters, the problem is the sending unit in the gas tank. You can try 40 ohm and 250 ohm resistors. I used to get resistors from radio shack, I don't know if they went bankrupt? The store in my community closed. Other places may have resisters?
Just to add, the wire colors for sending unit/sensor are purple and black with white tracer.

Jul 05, 2017 | 1999 Chevrolet Venture

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