Question about 1997 Saab 900

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Instrument pack My '97 900 SE Turbo instrument pack (speedometer, tachometer, etc.) will go completely dead for less than a second while driving, then restart as if I had just turned the car on.  It does not affect any other systems and the car continues to run as if nothing happened.  Any ideas?

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  • mapoling Aug 11, 2008

    Thanks - appreciate the help!

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I had the same problem and had to have the instrument cluster replaced.  The mechanic had to find a used one ($275)...the whole job was $660.

Posted on Apr 10, 2009

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You may have a faulty connection at fuse holder or relay which supplies instruments.
Hope this helps MMP

Posted on Aug 11, 2008

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Posted on Jan 02, 2017

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I have a 1998'Ford Explorer and half the dash lights are out and all pod a sudden my speedometer just quit. Need to know what fuses would go to these, so I can try that. Ty


Sorry but it's not a fuse problem . There is not a fuse just for the speedometer . The microprocessor inside the instrument cluster determines where the speedometer needle points , just like the fuel gauge , tachometer etc... Having the vehicle checked for DTC'S would be the proper step to take .
Vehicle Speed Signal
The vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4-wheel anti-lock brake system (4WABS) module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems which require a vehicle speed signal input.
Speedometer
The electronic speedometer receives a speed signal from the 4WABS module.

  • The Speedometer/Odometer Is Inoperative
  • Circuitry.
  • Speedometer.
  • GO to Pinpoint Test E .

No where in this factory diagnostic step does it say to check a fuse !

PINPOINT TEST E: THE SPEEDOMETER/ODOMETER IS INOPERATIVE CONDITIONS DETAILS/RESULTS/ACTIONS E1 CHECK THE VOLTAGE TO THE INSTRUMENT CLUSTER
Instrument Cluster
Measure the voltage between instrument cluster C288-7, circuit 1001 (WH/YE), and ground.
  • Is the voltage greater than 10 volts?
Yes GO to E2 .

No REPAIR circuit 1001 (WH/YE). TEST the system for normal operation.
E2 CHECK THE INSTRUMENT CLUSTER PRINTED CIRCUIT
Instrument Cluster
NOTE: Measurements must be made to the speedometer gauge pins that are inside the instrument cluster printed circuit clips.
    Measure the resistance between the speedometer pins (which can be seen in the middle of the instrument cluster printed circuit clips) and the corresponding instrument cluster terminal. Refer to the table for the pin and terminal assignments.
    Instrument Cluster Terminal Speedometer Gauge Pin C286-13 C287-1 S C287-2 G C288-7 BATT
    .

  • Are the resistances less than 1 ohm?
Yes GO to E3 .

No INSTALL a new instrument cluster printed circuit. REFER to Instrument Cluster Printed Circuit . TEST the system for normal operation.
Your best bet , take it to a qualified repair shop

Mar 30, 2017 | Cars & Trucks

1 Answer

Speedometer works but not the rpm gauge 98 Tahoe 5.7


The speedometer is operated differently then the tachometer. Tachometer
The tachometer displays the engine speed in revolutions per minute (RPM). Voltage pulses are taken from the ignition control module (ICM) (Gasoline) or the generator (Diesel) and sent to the tachometer. Solid state circuits convert the pulse frequency in order to move the pointer of the tachometer.

Tachometer Inoperative (Gas)
Step
Action
Value(s)
Yes
No
1
Did you perform the OBD II System Check been performed?
--
Go to Step 2
Go to Powertrain On Board Diagnostic (OBD) System Check (5.0L/5.7L); Powertrain On Board Diagnostic (OBD) System Check (7.4L)
2
Remove the I/P Cluster.
Disconnect the Ignition Coil connector.
Connect a J 39200 DMM (continuity) between I/P Cluster connector cavity 6 and ground.
Is continuity present?
--
Go to Step 3
Go to Step 4
3
Locate and repair the short to ground in CKT 121 (WHT) between the Ignition Coil and the I/P cluster. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete?
--
Refer to Instrument Cluster System Check
--
4
Connect a J 39200 DMM (continuity) from I/P Cluster cavity 6 to ignition coil connector cavity B.
Is continuity present?
--
Go to Step 5
Go to Step 6
5
Replace the I/P Cluster. Refer to Instrument Cluster Replacement .
Is the repair complete?
--
Refer to Instrument Cluster System Check
--
6
Locate and repair the open in CKT 121 (WHT) between the Ignition Coil and the I/P Cluster. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete?
--
Refer to Instrument Cluster System Check

Dec 26, 2014 | 1998 Chevrolet Tahoe

1 Answer

I have a 2003 Nissan Sentra and while driving the instrument cluster will go dead no speedometer, tachometer, gauges, warning lights or cruse control.


Two things. The ground wire from the cluster is loose or the power wire to the cluster may be loose at the connector.

Sep 25, 2014 | 2003 Nissan Sentra

1 Answer

All guages and tach work no speedometer no lights 91 pont bonn se


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Feb 14, 2013 | 1991 Pontiac Bonneville

1 Answer

GAGES QUIT


Check the connections on the back of the instrument cluster. It sounds like you have a faulty instrument cluster board, a poor connection and perhaps, but less likely, an ECU issue.

Nov 04, 2012 | 1995 Eagle Vision

1 Answer

2003 Silverado 4.8 V8. Speedometer and tachometer, as soon as underway, read past maximum. When engine is shut off guages do not return to "0"


Hi Norton,

What has happened is your speedometer and tachometer drive motors are failing inside your silverado instrument cluster. I see this very often in GM trucks, to fix the problem you need to have your instrument cluster rebuilt.

Check out this article that talks more about it http://drspeedometer.com/chevy-silverado-instrument-clusters-why-they-quite-working

Thanks,
Fred

Sep 27, 2010 | Chevrolet Silverado 1500 Cars & Trucks

2 Answers

Instrument cluster


Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Silverado instrument cluster repair
Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Impala instrument cluster repair

Aug 25, 2010 | 2005 Chevrolet Impala

1 Answer

I have problems with my tachometer and speedometer, sometimes it seems that it doesn't work, but when i give my instrument panel a slight pounding it will be on its normal term, what seems to be the...


Best case ...... Wire harnes plug on the back of the instrument cluster is loose or has dirty contacts.

worse...... faulty circut board in instrument cluster , ( cracked , burnt etc.)

May 06, 2009 | 1996 Honda Civic

1 Answer

Intermittent fault on instrument cluster


there is a wiring package that contains a wiring connector for the back of the cluster.the part number is 5016261aa

Dec 04, 2008 | 1999 Jeep Cherokee

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