Question about 1991 Chevrolet S-10 Blazer

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DIGITAL INSTRAMENT PANEL LIGHTING

DIGITAL DISPLAY IN DASH FOR FUEL, TEMP AND RPM'S IS NOT VISABLE. MPH DIGITS AS WELL AS MILEAGE DIGITS ARE. I HAVE CHECKED AND REPLACED ALL FUSES AND BULBS. WHAT ELSE COULD IT POSSIBLY BE?

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If you pull your cluster out of the dash, take the rear case cover off and you will see many fuses, some are just coroded away, others are jut full of dust and grime, use alchohol to clean them and they should work, however, if they are coroded, you can either replace them (good luck finding them) OR just resolder them with LEAD FREE solder

Posted on Aug 05, 2009

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Posted on Jan 02, 2017

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My 2002 Saturn L100 odometer stopped working and isn't clocking miles at all.


Odometer
The odometer is an electronic digital display. Digits displayed are illuminated by the odometer backlight bulb. The odometer backlight bulb brightness is controlled by class 2 messages from the BCM to adjust the display for daylight and instrument panel dimming operation. The trip odometer and total odometer will show in this display area. The push button in the lower right side of the speedometer is used to toggle between the trip and total odometer readings. To reset the trip odometer, push and hold the button down for at least two seconds. The total odometer display has six digits with no decimal display. The trip odometer has four digits including a decimal point and indicates tenths of a mile or kilometer.
The body control module (BCM) stores the vehicle mileage. If the BCM fails, the cluster will display the last valid mileage that was sent before the BCM failed. For replacement of the BCM refer to the BCM section of this service manual. Replacement instrument clusters do not require odometer pre-setting before installation. If the instrument cluster is replaced, the mileage stored in the BCM will be sent to the new cluster via serial data, and shown in the odometer display.

Your best bet , take it to a qualified repair shop.

Jul 25, 2017 | Saturn 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

1 Answer

F250 fuel filter


You did not say if the engine rpm really changed or if it was just the gauge being inaccurate. The problem is electrical and probably in the alternator or stray voltage leaking from another source. I had a digital dash on a Lincoln and it would record mileage and 50 mph while the vehicle was standing still with the engine running. I wasted money on another dash and the replacement did the same thing. I took off the alternator and when bench checked it was leaking 14 amps into the alternator case.

Replacing the alternator fixed the problem. Check the alternator first, but it can be any electric device that leaks voltage into the vehicle body. In my case the battery stayed up, the lights were normal and only a bench check revealed the problem.

I hope this helps you.

Feb 19, 2018 | Ford F-250 Cars & Trucks

1 Answer

Temp.guage on instrament panel is erradic


Could be the temp sensor or the gauge on the dash is faulty.
Does the gauge go to cold if you disconnect the sensor ?

Jan 22, 2014 | Cars & Trucks

1 Answer

Dash gagues not working


maybe pixels gone bad check that.

Oct 07, 2017 | 1998 Ford Taurus

1 Answer

Digital mileage display not fully displaying some digits. Need help.


You will need to remove the display from the car and send it out for repair and then don't let this same mechanic touch it again. Contact the dealer near you for the name and phone number of the shop that repairs there electronics from Toyota vehicles.

Oct 24, 2012 | 2005 Toyota 4Runner Sport

2 Answers

I have a 99 Plymouth Grand Voyager and the dash keeps going out. No RPM gauge, no MPH, no Temp, no Gas gauges. Also cannot see the mileage. My ABS, check engine soon, and brake light are also stuck on. ...


Google : Dodge cluster solder, in google images. Or have a look at earlier posting by another Fixya expert.

http://www.fixya.com/cars/t6439654-99_dodge_caravan

Sep 02, 2011 | Plymouth Voyager Cars & Trucks

1 Answer

Radio lights, steering wheel radio controls, and HUD not lighting


well, this morning they are fine, all i did was checked all fuses that had to do with illumination and radio. none were bad so no replacements were made, and now it works. wish i knew what i did.

Dec 08, 2009 | 2002 Audi A6

1 Answer

How do you replace the dash light bulbs in a 1992 Ford Ranger XLT


remove the plastic shrowd on the dash by taking out the screws in the instrament display and the ones under the radio and temp controls. take out the ashtray and remove the two screws there. take off the light nob and gently pull the panel off once you have removed all the screws. you will then have the access needed to get to the lights.

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1 Answer

Rpm, temp, fuel gauges not working


IF IT WAS A NEW ENGINE FIND OUT WHAT YEAR THE ENGINE IS AND GET THE MATCHING GAUGES THAT MATCH THE SAME YEAR OR MAKE SURE THAT EVERY THING IS PLUGGED UP IN THE DASH CONTROL PANEL

Apr 03, 2009 | 1991 Honda Civic

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