Question about 1999 Oldsmobile Alero

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Security light 1999 Olds alero

Security light keeps coming on then the car will not start. The gas tank acts like it is full and come out when you try to put fuel into the car.

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  • like2roses Aug 26, 2008

    My 1999 olds alero has started doing the same thing in the last 6 months, and if you jump it off its fine. what can be causing this problem?

  • dandeneau41 Sep 18, 2008

    would like to know how to disable the security system on a 1999 Olds Alero.

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I have that problem all you have to do is turn the key to the on position but do not start it. what about 10 mins, the security light should go out then. start car. ive changed the igintion twice till a mechanic told me what to do and it works pain at times but works.

Posted on Sep 16, 2008

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Either the pats module (theft system) is going bad or the transponder in the key is getting weak. Will need to go to a service center to have the module reprogrammed at the least. If you want to bypass the system tottaly then let me know and I can tell you how to do that.

Posted on Sep 02, 2008

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My 1999 alero was doing the same thing a few years back. I took it to the shop and they told me it had something to do with my ignition (it was several years ago so I can't remember exactly what they said). It was sort of an expensive fix. It hasn't done it since. I hope that helps a little.

Posted on Aug 27, 2008

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I have a 99 olds alero. I can drive awhile park the car try to start it and it won't crank. Newer battery and alternator. Mechanic is thinking manifold sensor. plz help


IF CAR TURN OVER NOT CRANKING AFTER A SHORT DRIVE WHEN ENGINE HOT.DIRTY CLOGGED FUEL INJECTORS FLOODING ENGINE OUT.CLEAN FUEL INJECTORS.FILL GAS TANK UP.PUT A CAN OF SEAFOAM IN FUEL TANK.DRIVE CAR AROUND TO HELP FLUSH OUT CARBON ON THE INJECTORS SEATS TO STOP GAS DRIPPING CAUSING FLOODING.IF CAR WONT TURN OVER.BAD BATTERY CABLES OR STARTER.SCAN IT FOR THEFT SECURITY PROBLEMS. IF STARTER TURNS OVER NO CRANK ENGINE FLOODING DUE TO DIRTY FUEL INJECTORS.

Sep 26, 2010 | 1999 Oldsmobile Alero

1 Answer

1999 olds alero, ignition light comes on and car


first check the alternator belt if fine then yes the alternator may be bad.(note) make sure to check the oil level it will also make car die out.

May 06, 2010 | 1999 Oldsmobile Alero

2 Answers

1999 Olds Alero. Low coolant light comes on and stays on even though its full. Starts running hot to the 3/4 mark. When the heater is turned on it cools off. Could this be the thermostat or the water pump.


TAKE RADIATOR CAP OFF WITH ENGINE COLD AND CHECK WATER ..MAKE SURE RADIATOR NOT BLOCKED,,PLASTIC BAG ETC. THIS SOUNDS LIKE LOW WATER OR RADIATOR ..STOPPED UP INSIDE ..IF YOU HAVE GOOD HEAT IT'S FULL OF WATER. REPLACE T STAT B4 RADIATOR..IT'S CHEAPER. ALSO CHECK FOR RADIATOR COOLING FAN OPPERATION..I,M RULING OUT THE WATER PUMP.

Mar 20, 2010 | 1999 Oldsmobile Alero

1 Answer

Fuel filler won't not accepting gas. takes only a


HAVE FUEL EVAPORATIVE SYSTEM CHECK OUT.SOUND LIKE PROBLEM IS IN THE EVAP CANISTER PURGE VALVE OR VENT VALVE.YOUR FUEL TANK BUILDING UP WITH GAS VAPORS KEEPING YOU FROM PUMPING GAS IN TANK.

Feb 07, 2010 | 1999 Oldsmobile Alero

2 Answers

1999 olds alero where is my fuel filter


The fuel filter is located under the car right in front of the fuel tank.You need to have up on jackstands to get to the filter.
Mine is located BEHIND the gas tank, between the tank and the rear (axel) support ('99 Olds Alero 3.4l v6 2 door coupe)

Oct 21, 2009 | 1999 Oldsmobile Alero

1 Answer

2001 Olds Alero will act **** when switching gears


My car does the same thing. I wondered that myself, I don't think that's what it is though, I don't think you have an issue with the transmission. Your car has TWO check engine lights, and with the Alero--if there is an issue with the transmission one of the lights will come on. I am not 100% positive of this, but I had a 1999 Bravada (Olds) and it did do that when I had a tranny issue.

I notice when I drive my 2001 Alero my right leg gets SORE from pushing the pedal so hard. I think it is age, not the transmission.

READ YOUR SERVICE MANUALS. I don't get why people ignore them, honestly they have a wealth of information in them...could have saved a lot of people lots of money when people started claiming their car wouldn't start when it was a security feature that is listed in the manual that came with the book.

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1 Answer

1999 Olds Alero, unleaded gas. Am having problem with gas tank


have your evaporative purge valve solenoid check. because its controls the gas vapors going to canister purge or vent valve.take it to dealers have the evap system scan because its not venting or controling gas vapor.it suppose vent gas vapor to intake to be burn.if it dont work it causes excess gas vapor pressure built up in tank. make it hard to pump gas into it.

May 17, 2009 | 1999 Oldsmobile Alero

1 Answer

Gas won't pump into tank on 99 Olds Alero


is it a diesel pump, they have different nozzles

May 16, 2009 | 1999 Oldsmobile Alero

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