Question about 2000 Ford Expedition

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Panel metering not working like fuel gauge, temperature gauge, battery gauge, speed gauge and RPM gauge.

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Seems like a dodgy earth behind dash panel. Hope this helps..

Posted on Sep 11, 2009


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My guages stoped working and transmition seems to be slipping in my 2001 shevy silverado 4.8

Well ronnie do you know how to do automotive electrical testing with a volt meter ? How to read an understand a wiring diagram ? Would think not to be a relay problem because other thing's would not work as well ! More then likely a loose ground or something on that order ! Plus you must mean Ignition . 1 relay , because there isn't a eng.1 relay . Ign. 1 relay powers the PCM - engine computer , fuel injectors , the TAC - electronic throttle control module . Do the instrument cluster lights still work when the gauges quit ? Looking at power distribution diagram I see a engine 1 fuse but has nothing to do with the instrument cluster . Supply's B+ voltage to the maf sensor , EVAP system , CAM sensor , IAT sensor , fuel pump relay ! Could be a communication problem on class 2 data bus . All the modules on the vehicle share information on the class 2 bus . The gauges get thier info from the PCM over this data network !
Engine Coolant Temperature Gauge
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 gauge defaults to 75°C (160°F) or below when:
• The PCM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of class 2 communication with the PCM.

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:

The IPC displays the vehicle speed based on the vehicle speed signal from the PCM. The IPC 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.

The IPC displays the engine speed based on the engine speed signal from the PCM. The IPC receives the engine speed signal from the PCM via a discreet wire. The IPC uses the engine speed signal circuit (2 pulses/engine revolution) from the PCM in order to calculate the engine speed. The tachometer defaults to 0 rpm if a malfunction in the engine speed signal circuit (2 pulses/engine revolution) exists.
Transmission Temperature Gauge
The IPC displays the transmission temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the transmission temperature. The transmission temperature gauge will default to 40°C (100°F) or below if:
• The PCM detects a malfunction in the transmission temperature sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.
The IPC displays the system voltage as detected at the ignition 1 input of the IPC. When the engine is ON, the gauge should be between 10 and 16 volts.

The only one that has a hard wired sensor is the oil pressure gauge.
Engine Oil Pressure Gauge
The IPC uses the engine oil sensor signal to determine the engine oil pressure. The oil pressure sensor signal circuit is hard-wired to the IPC. The engine oil pressure sensor signal to the IPC is a variable resistance ranging from 0-90 ohms. A sensor resistance of 1 ohms will display as 0 psi (0 kPa) and a resistance of 88 ohms will display as 80 psi (550 kPa). The Check Engine Oil Pressure indicator will be displayed in the message center if the IPC detects a low engine oil pressure.

Does this one drop out also ? quit working

I would suggest that you take an have the IPC checked for DTC'S - diagnostic trouble codes , NOT OBD 2 engine codes , these are different an need a professional type scan tool .
You could check G103 for being loose . G103
On the left rear of the engine block . Also pull the instrument cluster out an check connection at the back of IPC . Check power an ground circuits at the PCM as well . You can fine wiring diagrams here Enter the vehicle info . year , make , model an engine . under system click body an acc. then under subsystem click on instrumentation .Click the search button , then click the blue link . At the top of the diagram it shows B+ power supply , The connectors on the back of IPC , A,B , plus the pin # an color wire .
PCM power and ground testing avi
How To Use Multimeter Test Car Ground Video 3
Intermittent Electrical Diagnostics with Rich Peterson

Apr 10, 2017 | Cars & Trucks

1 Answer

My battery went dead and i replace it , now my fuel and rpm gauge is not working.speed and temperature is ok, why?

on newer cars when you un hook the battery it will mess the computer most of the time if you drive it for about 1000 miles the computer will reset itself if it doesn't take it somewhere where they can reset it for you

Oct 21, 2014 | 2005 Land Rover Range Rover

1 Answer

My battery went dead but i recharged it right my rpm and fuel gauge is not working,speed and temperature gaugesis ok

Hi,try undoing the battery again and leave for 15minits then reconnect and see if that makes it wright it self again.
Hope it works for you.

Oct 21, 2014 | 2005 Land Rover Range Rover

1 Answer

Battery went dead for my 2005 range rover but i recharged it right away. now my fuel and rpm gauge stay zero.speed and temperature gauge is ok.

Disconnect the battery both leads and join them together for half hour then see what happens if they still dont work then iam afraid you have had brown out in the system and this will have damaged the speedo unit electronics which are on the back of the speedo ,it has a mini computer on the back in fact and its expensive

Oct 21, 2014 | Land Rover Range Rover Cars & Trucks

1 Answer

Chrysler Town and Country gauge lights are out.

Do you have power in and out of the panel dimmer switch ?

Mar 02, 2014 | Cars & Trucks

1 Answer

Ford Taurus idles low and takes 3-4 times to stay running on cold days

Some of these models have 2 temperature sensors. One makes the dash gauge or light work and the other works the engine controls.

The one that makes the engine controls work acts like a choke. It speeds up the rpm and enriches the fuel mix for cold starts. This is why you are having more problems in cold weather. You can see which one operates the dash gauge and then change the other one. Hopefully once you get the temperature sensor reporting to the engine management module, everything will work again.

Feb 20, 2013 | 2004 Ford Taurus

1 Answer

No guages working

If all voltages checked ok, then most probably its faulty instrument cluster board on which gauges are connected. Yes if cluster circuit board looks ok, then also it can be faulty. Somewhere there is minute short or burn on board then such problem arises.

Also check the fuse box. One under hood and other under dash.

Inspect each and every fuse and see if all are fine or not.


For more troubleshooting on these cluster gauges I suggest you to refer the list of help links mentioned below. Its step by step instructions will help you to confirm the exact cause of problem in these conditions: ---------

Click the link below: ------

2004 Toyota Tundra: Oil Gauge and Temp Gauge Not Working?


2005 Lexus SC430: Fuel Door, Dome light and Fuel Gauge Fuse Location?


Toyota 4Runner: Temperature Gauge Sensor


Temperature gauge sits over half way mark?


Heater blows intermittently and temp gauge goes erratic?


Temperature gauge does not move and no heat when heater is ON?


2003 Pontiac Grand Prix: Erratic Fuel Gauge?


Temperature gauge keeps fluctuating up and down close to red?


Temperature gauge on the dash quit working on Pontiac Grand Prix?


Fuel gauge jumps from empty to full?


Gas gauge stuck on empty on 2002 Mercedes Benz 240c?


Oldsmobile Temperature Gauge Lamp Switch?


Fuel gauge drops to Empty?


Dodge neon gauges not working?


Temperature gauge went up?


Temperature gauge stays At cold on jaguar?


How to replace Instrument panel and dashboard on Toyota car?


How to remove instrument panel on Chevrolet car?


How to remove control panel on Buick regal?


These details will help.


Nov 28, 2012 | 2000 Mitsubishi Lancer

1 Answer

The speed and rpm meters quit working. Is this possibly a fuse? or maybe a sensor? or maybe a cable?

{: ) A cable is definitely not the problem because there is none. There is no particular fuse for both meters. In case the cluster fuses go bad, there will be other more indicators or gauges that won't be functioning aside from the two meters, and you can also observe that. To verify if the two gauges are inoperative or stuck, you will need service of diagnostic scan tool.
The speedometer and rpm meter are electrically integrated into the IPC (nstrument panel cluster)module. The IPC gather its information from other modules like the PCM or BCM and they communicate thru serial data lines, similar to a telephone network hooked up to only two wires.
For both meters, the IPC communicates with the PCM (Powertrain Control Module), which receives the signals coming from the vehicle speed sensor (for the speedometer) and the engine speed sensor (for the rpm meter or tachometer).
The two sensors could not have failed at the same time, although not impossible. A module (PCM) or communication (wirings and connectors) failure is a more likely cause. Just make sure that all the fuses are checked good to rule out any missing power signal during the initial diagnosis.

Aug 11, 2011 | 2003 GMC Yukon XL

3 Answers

Speedometer, gas gauge, odometer, rpm gauge not working

My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do

Jul 29, 2009 | 1998 Nissan Frontier

1 Answer

Speed-o-meter and RPM gauge do not work

if the engine is running fine and no limp mode no engine lights. abs is working then the only other thing could be the dash may need replacing as putting the battery on wrong can blow the electronics in the dash as they are both linked. i ask is there any other problems as the rev counter work to ecu in line with speedo and the abs unit to determine timing etc. speedo works of the abs system the connection between them both is the board in the dash board. you can replace the boards in the dash but you will need replacement dash parts to do this but remember if you change the dash you need to log the miles as new dash will have different miles and uk mot log your miles to dvla. USA i dont know you would need to look into this.

Jun 29, 2017 | 1996 Audi A4

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