Question about 1999 Buick Century

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Mileage display not working

It does not show the mileage, trip or what gear i am in all the fuses are good. what do i do now?

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  • Buick Master
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Those cluster are bad the led goes dimmer and dimmer untill you see nothing but the trouble with those in the back of cluster there 4 letter even if the cluster look the same you need the same letter go to scrap yard ask for the cluster and dont forget those letter anybody who know what there doing gonna ask you for it thank pierre

Posted on Jun 24, 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

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

How to turn off the maintance required light


Turn the key to the on position,but do not start it. Make sure the odometer is set to the actual mileage and not the trip mileage.
Now turn the key back to the off position then press and hold the trip mileage reset button. While still holding the trip reset button down, turn the key to the on position. Continue holding the trip mileage reset button while the mileage flashes rows of zeros until the actual mileage appears again. Release the button and that should reset your maintenance light.
Hope this helps but if not please let me know.
If it does please give a rating thanks and good luck.

Jun 18, 2010 | 2006 Toyota Camry

1 Answer

No radio and time & trip reset when car is off. After jump


We already know that's not a good idea. It causes havoc blowing as many fuses (which is better) and a real expensive disaster to the ones that were not fuse protected. Your alternator could be malfunctioning from this event and also consider solid state components be in a blown or fried state. Using a simple VOM will test for continuity of fuses and tell you if it's no good and replace the fuse. You've caused a disaster just by x-ing pollarity and by guestimating without the simpliest correct tools you will cause another which will burn a bigger hole in your wallet. The radio code is needed to unlock your radio. It is supplied in your radio owners manual and in a key tag attached to all your keys. For your instrument cluster I would think it's fried inside, rarely it could only be replacing the nicad battery that stores data for mileage info.

Sep 20, 2009 | 2000 Volkswagen Jetta TDI

1 Answer

TOTAL MILAGE/TRIP DISPLAY IS BLANK


Try the fuse in slot 10 7.5 amp inside fuse panel

Apr 09, 2009 | 2002 Mercury Mountaineer

2 Answers

1995 Cougar Odometer/trip-meter inop


Section 13-01: Instrument Cluster—Conventional 1995 Thunderbird, Cougar Workshop Manual REMOVAL AND INSTALLATION Instrument Cluster Removal and Installation
  1. Disconnect battery ground cable (14301) .
  1. Remove screws holding instrument panel reinforcement (017A28) .
  1. Remove screws holding instrument panel lower shield (045G02) .
  1. Remove fasteners holding steering wheel column as outlined in Section 11-04 . Gently lower steering column.
  1. Remove fasteners holding the instrument panel finish panel (044D70) and gently pry off.



  1. Remove four instrument cluster retaining screws. (Do not remove screws from the instrument cluster main lens (10887) and instrument cluster mask (10890) ).
  1. Slide the instrument cluster (10849) to the right of the instrument panel opening and unhook the instrument panel harness from the back of the instrument cluster .
  1. Remove the instrument cluster from the instrument panel (04320) .
-----------------------
Speedometer/Odometer Federal law requires that the odometer in any replacement speedometer (17255) must register the same mileage as that registered in the removed speedometer . Since the speedometer mileage cannot be reset on this unit, affix odometer sticker to driver's door pillar and record original vehicle mileage. Removal
  1. Disconnect battery ground cable (14301) .
  1. Remove the instrument cluster (10849) as outlined.
  1. Remove seven screws retaining the instrument cluster mask (10890) and instrument cluster main lens (10887) .
  1. Remove speedometer assembly.
Installation
  1. Position the speedometer assembly to the instrument cluster back plate (10848) and install.
  1. Position the instrument cluster mask and instrument cluster main lens to the instrument cluster back plate and install the seven retaining screws.
  1. Install the instrument cluster as outlined.
  1. Connect battery ground cable and check the operation of the speedometer .
please rate if this helps

Mar 24, 2009 | 1994 Mercury Cougar

2 Answers

1990 Crown Vic LX Odometer does not work


I think the speedo head is probably good. You need to check the speedo cable and the gear at the end of the cable housing. If the gear is cupped in the center it is worn out. Replace the gear by the color code at your local Ford dealer. The other scenario would be that the gear on the output shaft is worn also. This would require the tailshaft be removed from the tranny and the nylon gear replaced on the output shaft. Good luck.

Mar 12, 2009 | 1990 Ford LTD Crown Victoria

1 Answer

No "backlight" to show the gear and mileage.


it is a bad bulb or fuse check the fuse first since that is easier to do

Sep 09, 2008 | 1998 Buick Century

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