Question about 1992 Audi 100

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Speedometer and odometer not working 92 audi 100

I have a 92 audi 100s with a used 95 a6 engine in it. my fuel gauge has never worked since i bought it and i've always used the trip odometer to gauge my fuel levels. but today my speedometer stopped working and i noticed on my 30 mile trip home from work that my trip odometer hadnt moved either! any suggestions?

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  • Anonymous Mar 12, 2014

    and engine won't start

  • Anonymous Mar 14, 2014

    Odometer Stopped working at 94000 miles and trip wont work

  • Anonymous Mar 19, 2014

    Speedometer needle jumps and odometer doesnt work

  • Anonymous Mar 23, 2014

    i have a 1990 dodge d150 and th gas gauge while the truck is shut off shows about a quarter tank but when you start the truck it goes down to Empty. the odometer and trip don't work either and the speedometer is about ten miles per hour off when the gauge isn't hopping all over the place. what problems could be occurring on these because I have plans to sell the truck and I don't sell junk. and this is the only thing wrong with it. everything else works great

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I had similar problems with speedos in two 1990 Audi 100s, it was some time ago, but the contacts on the circuit boards on the back of the speedo deteriorate and do not give a good contact. I bought second hand speedos, only to find they had similar problems, eventually it was very easy to fix, I shaved matchsticks to chisel points and pushed them into the circuit boards to add pressure on the contacts and improve connection. After that repair drove the cars for a few years and the problem did not recur. It was a long time ago and I cannot remember exactly where the matchsticks were placed but look for soldered points near the edges of the boards. Regards, Michael

Posted on Dec 08, 2008

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Posted on Jan 02, 2017

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Doesnanyone have a diagram showing where the wires on a speedometer connect to? I need to see if i pulled it on accident. And fuel gauge. Im learning so pictures are easier. Thx 2001 chevy tahoe


The speedometer gauge is controlled by information sent over the class 2 data bus from the PCM/ECM - engine computer . There is a VSS - vehicle speed sensor mounted on the transmission , this VSS is a input to the engine computer .
Speedometer
The IPC displays the vehicle speed based on the vehicle speed signal from the PCM. The IPC- instrument panel cluster receives the vehicle speed signal via a discreet wire. The IPC uses the vehicle speed signal circuit (4000 pulses/mile) from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit (4000 pulses/mile) exists.
Is the whole instrument cluster dead ?
Fuel Gauge
The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gauge defaults to empty if:
• The PCM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.
When the fuel level is less than a pre-determined value, the low fuel indicator illuminates.
Reviewing the fuel system description will further explain how the system functions. Refer to:
• Fuel System Description in Engine Controls - 4.3 L
• Fuel System Description in Engine Controls - 4.8 L, 5.3 L and 6.0 L
• Fuel System Description in Engine Controls - 6.6 L
• Fuel System Description in Engine Controls - 8.1 L
Hourmeter
The IPC can display the accumulated engine run time hours using the VF display when the cluster is in the LOCK or ACC position. The IPC stores the accumulated engine run time hours in a non-volatile format. The accumulated hours will not change if the battery was disconnected or removed. When the ignition is OFF and the trip reset switch is pushed in and held for more than 4 seconds, the IPC will display the accumulated hours for 30 seconds. The hourmeter will reset to 0.0 when 10,000 hours are accumulated.
Odometer
The IPC contains a season odometer and a trip odometer. Momentarily press the trip/reset switch on the IPC in order to toggle between the season odometer and the trip odometer. Press the trip/reset switch for greater than 2 seconds, while the trip odometer is displayed, in order to reset the trip odometer. The IPC displays the vehicle mileage and trip mileage as determined by the IPC. The IPC calculates the mileage based on the vehicle speed signal circuit from the PCM. The odometer will display 'error' if an internal IPC memory failure is detected. The odometer can be configured to display either miles or kilometers.
PRNDL Display
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display blanks if:
• The PCM detects a malfunction in the transmission range switch circuit.
• The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park (open input).
• The IPC detects a loss of class 2 communications with the PCM.
GM had problems with stepper motors that control the needle position .
Your best bet buy a used instrument cluster from the auto slavage yard .

Apr 30, 2017 | Cars & Trucks

1 Answer

I bought a second-hand 2004 Audi A6 Quatro recently. The speedometer intermittently does not work, just stays on zero. All other gauges are fine, but the engine light is on.


speedo
part failed is a rpm sensor
on the gearbox somewhere or wheel sensors

engine ligh says there a fault codes stored in the ECU
that need to be read to find the failed part





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Nov 10, 2016 | Audi Cars & Trucks

1 Answer

My mph, gas, and temp gauges are not working


That's why you don't let you husband work on your car ! Unless he does it for a living .. For MPH there is a VSS - vehicle speed sensor , for the gas there is a sending unit in the fuel tank, for the temp. gauge there is a temp. sensor located in coolant stream on the engine .You more then likely need to have you instrument cluster repaired . GM had a problem with step motors inside the instrument cluster . A step motor is what controls the individual gauge. The sensors are all inputs to the PCM - powertrain control module (engine computer ) .
Engine Coolant Temperature Gage
The IPC displays the engine coolant temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gage defaults to C or below if:
?€¢
The PCM detects a malfunction in the engine coolant temperature sensor circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

Fuel Gage
The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gage defaults to empty if:
?€¢
The PCM detects a malfunction in the fuel level sensor circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

When the fuel level is less than 14% (84ohms), the low fuel indicator illuminates.
Odometer
The IPC contains a season odometer and a trip odometer. Momentarily press the trip select/reset switch in order to toggle between the season odometer and the trip odometer. Press the trip select/reset switch for greater than 1.5 seconds, while the trip odometer is displayed, in order to reset the trip odometer. The IPC displays the vehicle mileage and trip mileage as determined by the IPC. The IPC calculates the mileage based on the vehicle speed information from the PCM. The odometer will display 'error' if an internal IPC memory failure is detected.
PRNDL Display
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display shall flash all gear positions if:
?€¢
The PCM detects a malfunction in the transmission range switch circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

Speedometer
The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses per mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 mph (0 kph) if a malfunction in the vehicle speed sensor circuit exists.
Tachometer
The IPC displays the engine speed as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine speed. The tachometer will default to 0 rpm if:
?€¢
The PCM detects a malfunction in the engine speed sensor circuit.


?€¢
The IPC detects a loss of class 2 communications with the PCM.

May 22, 2016 | 2002 Buick Century

2 Answers

Why does fuel gauge stay above full?


In the mean time you may want to adopt the system I have done with my MY98. I reset the trip odometer at each fill-up. I have always had plenty of reserve in the tank when I refill at 300 miles driven. It is annoying but after 7 years I have learned to live with it. My tank contains 23 gallons and I usually have 6 or more gallons remaining at fill-up.

The expense of dropping the tank and having the repair vs the always check before travel the trip odometer has worked out for me. I have learned this process from boating where the fuel gauges can never be trusted.

Dec 01, 2015 | 2004 GMC Envoy

3 Answers

Fuel Gage does not work


Check for power first because the fuel gauge floats are located in the tank.

Nov 28, 2015 | 1995 Jeep Grand Cherokee

1 Answer

How do I fix my gauges? (Ie, gas gauge, temp gauge, speedometer, odometer)


Fuses? Blown fusible link? Most gauges work by getting 12 volts from the ignition switch when on, and getting a ground from the sender. Often the 12 volt supply wire goes to more than one so if dead, both will fail. If you have a wiring diagram, you might find which wire to cluster should be hot, and trace it backward to find the issue. Easier to check for ignition switch feed first.

Jul 01, 2015 | Cars & Trucks

2 Answers

1992 toyota 4x4 pickup odometer working but speedometer not working


They both work off of the same cable, so I would say that you have a problem in the speedometer head itself and will need replacing or sent in for repair.

Oct 12, 2014 | 1992 Toyota Pickup

1 Answer

Fuel gauge only works when theres half a tank or more of fuel audi a6 2.5 tdi 1997


the flots has a hole in it ,renew the sender unit or tie a cork to the arm

Oct 16, 2010 | 1997 Audi A6

1 Answer

What do I do if I the gas gauge and speedometer doesnt work?


No help but my gauges stopped working at about the same time on my '98 Frontier. So far, the fuel, temp., speedometer, odometer and trip gauges don't work or some work at different times after starting the engine.

Sep 09, 2010 | 2001 Nissan Xterra

2 Answers

Everthing on my dash (speedometer,odometer,fuel


Blown Fuse or fried Circuit board. Take to a local AutoZone, Advance, Murray's, O'reillys or a similar part house for them to check the wiring. I'm assuming the van does not use a mechanical Speedometer or Fuel Gauge.

On the plus side, with no speedometer, your indicated odometer mileage does not increase. Just keep your speed down and your tank full. Kidding, just kidding.

Jan 05, 2010 | 1992 Dodge Caravan

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