Question about 1999 Oldsmobile Silhouette

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1999 Olds Silhouette stalls at low speed and then won't start. When this happens the Gas Gauge Flickers like it is loosing power. When the gage quits acting up then it will start and run fine Mechanic said when it acted up it did not have any fire. This also happens some times when you shut it off and go to restart it.

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  • peakers Mar 06, 2009

    The mec ched the fuel flow and found nothing wrong

  • peakers Mar 06, 2009

    That makes some sense. Any other Comments?

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  • Master
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I gotta agree with rt .. You have an electrical problem .. check the battery contacts, ground contact and starter contacts ..

Posted on Mar 06, 2009

  • Jay Glendenning
    Jay Glendenning Mar 06, 2009

    If you have a bad contacts at the battery, solenoid, ground and/or starter .. it would exhibit this kind of activity .. from what I have read .. you are getting fuel "fine" .. its the electrical system .. take the battery cables off the battery and clean those contacts till they are shiny, trace the ground wire to the frame/firewall and clean that contact (emery/sandpaper), and trace "hot" wire to solenoid/starter and make sure that they are clean and tight ..

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If your mechanic has done Idle settings and you still have the problem then you need to check and eventually replace the IAC sensor and probably also the air intake temperature sensor.

The car has a bad idle, that is probably beacause of the IAC (idle air control, see:IAC Cleaning Idle Air Control Maintenance) and after idling cannot restart because does it does not detect the right air temperature getting to the air fuel mixture combusted in the engine.

When the car shut down, additionally, it will have difficult starting up because of the non-combusted fuel accumulated inside cylinders.

A dirty injector in conjunction can make all this problem worse, but won't cause engine not restarting, also injector maintainance is suggested.

Tell your mechanic to test IAC.

Do not forget to rate the solutions in accord to support given.

Thanks and goodbye.

Posted on Mar 06, 2009

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Check the throttle body it may be dirty or clogged.

Posted on Mar 06, 2009

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Replacing the fuel pump will fix your problem.

Posted on Mar 06, 2009

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Check out for any pressure problem in the line.

Posted on Mar 06, 2009

  • crysiszone Mar 06, 2009

    i mean check the flow of gas.


  • crysiszone Mar 06, 2009

    start your car on normal file and run it on gas.


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Wow. I think its time for a new car.
This could be a lot of things, including but not limited to the ECU, the wiring harness, a short in one of the wires somewhere in the car... etc... this would be a difficult fix.

Posted on Mar 06, 2009

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1 Answer

I have 1999 0ldsmobile van and the gas gage is stuck at 1/4 tank , also the odometer and trip don't work


The odometer/trip display in this model is a LCD display and it is burned out, it is a common fault on all GM models in this model year range. The problem can be repaired but it requires the Instrument cluster be removed form the Van and be sent out to a GM approved repair center. These repair shops are on the Internet just google GM instrument cluster repair. The cost is about $160.00 US.
The gas gauge is a separate problem, it is caused by a defective gas level sending unit inside the gas tank. TO replace the level sensor for the gauge you must remove the gas tank from the van. To do this repair you need a good hydraulic floor jack, jack stands to support the car and a good set of common hand tools and a helper if you do the job on the ground. Use great caution when working on a gas tank as the risk if fire and explosion is quite high if proper care is not taken to a avoid creating sparks. Always dicinnect the battery negative cable before starting work on any part of the car. The parts cost for this is about $200 and 4-5 hours of hard labor.

Jun 19, 2012 | 1999 Oldsmobile Silhouette

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My 1996 Olds LSS doesn't idle properly,idling surges sometimes,the temp. gauge doesn't work and sometimes the heater doesn't work.It may stall while driving.If I get in and the power seats...


Your first problem is to find out why the intermittent no-power problem. Honestly, that sounds like a loose conmnection somewhere. check all your grounds for clean and tight conditions Also, battery connections and alternator connections. Double check your power distribution center for any loose wires or poor connections. Once you solve that problem, then you can diagnose the other problems with poor idle and temp. gauge.

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2001 Olds Silhouette: plenty of gas in the tank but the gage will read full, 3/4 full, 1/2 full, and everywhere in between. Van runs fine. No other issues except the gage goes crazy and can't depend on...


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Aug 12, 2010 | 2000 Oldsmobile Silhouette

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Feul Pump Replacement for 1999 Olds Silhouette?


All you may have to do to confirm power to your fuel pump, is to turn the key to on (not start) and listen for a "humming" from gas tank area. If you hear a hum, you have power going to pump, if not, then start thinking relays, fuses etc. Do you get the "Hum". How did you arrive at it being pump for sure, what tests did you perform? Here's a link that will assist you.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152801dbaf3

Mar 04, 2009 | 1999 Oldsmobile Silhouette

1 Answer

2002 OLDS SILHOUETTE


The problem is usually one or the other.  Both get 5 volts from the engine computer.  If the problem is the gas gauge, you'll have to change the sender in the tank.  Generally, an aftermarket pump/sender unit is $150-175.  Get one and drop the tank to install.  The temp gauge is another matter and it could be dirty coolant.  If both are going nuts together, you'll need a new computer.  Junk units are fine.

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