Question about 1991 Oldsmobile Ninety Eight

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Car won't start lost key i want to know how to start with a passkey

I need instructions in detail so i can start my 1991 ninety eight oldsmobile with a Vats passkey

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  • kitchenwi240 May 11, 2010

    key wont start car in park /neutral. yet can put key in run pos. and short srarter out and starter engages motor starts and runs for no more than 2/3 seconds fuel pressure at fuel rail and pressure relelease is normal fuses seem to be ok. used diffrent vats/passkey no change . can u help??????

  • yadayada
    yadayada May 11, 2010

    You 1st have the car towed to a dealer and have the ignition lock replaced then the module must be programmed to accept new lock cylinder.



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Here is the solution to your problem in details, this is a great write-up to completely bypass the VATS/Passkey system. It's quite easy and saved my car:

Posted on Jan 28, 2010


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1 Answer

Looking to get a key made for my 1994 Oldsmobile Ninety Eight.

There are 15 possible different chip keys that are used on your car. You need to have the correct one or else the antitheft will shut you down. Here is a link that explains the system and gives you the 15 possible key ratings. Plus some ways to get around it, if that proves to be easier.

May 22, 2012 | 1994 Oldsmobile Ninety Eight

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I want to bypass the passkey module

The system you have is Passkey VATS. On your 91 there are 2 ways to bypass this system. One is a partial bypass that works in certain situations, and another that works in ALL situation. This link explains alot and offers solutions to help you beat this.

Mar 10, 2012 | 1991 Oldsmobile Ninety Eight Regency

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How do i know if my car is equity with a remote door lock

It is. Here's a link where you can buy one, and instructions on how to program it.

Sep 15, 2011 | 1991 Oldsmobile Ninety Eight

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Hi i hava 1991 ninety-eight and it wont start, it gives me a message about the pass key malfunction. the car hasn't been started in over 3 months, when the car shut down, i was just leaving the gas...

it is a matter of resitting the anti theft ....with a good strong battery in it try to start it and then leave the key on for 11 min then it should start fix though ...clean all cable connections /grounds and if that dont fix replace the electric part of the ignition

Jan 23, 2011 | 1991 Oldsmobile Ninety Eight

1 Answer

How much does it cost to replace an ignition key for a 1991 Ninety-Eight Oldsmobile Regency?

It depends on your area. You can replace the ignition switch portion yourself. However the key lock has a chip on it that tells your cars computer it is ok to start. The dealer will have to re-program your cars computer to tell it that that key lock cylinder is ok to start the car.

Oct 14, 2010 | 1991 Oldsmobile Ninety Eight Regency

1 Answer

Needing to know where the fuel filter is located on a 1991 Olds Ninety eight

It would be located towards the rear of the vehicle. Most likely either to direct rear of gas tank or front of gas tank.

Sep 27, 2010 | 1991 Oldsmobile Ninety Eight

1 Answer

My car wont get spark i changed the coil pack now what do i do its a 1991 oldmobile ninety eight

Check the crank position sensor.(CKP) just dont go replacing parts, check them and verfiy bad.

Apr 22, 2010 | 1991 Oldsmobile Ninety Eight Regency

1 Answer

1991 Oldsmobile Ninety Eight Regency I can't determine how mice are getting into the car. They are inside the car; I.E. under the seats,in the glovebox, in the trunk, etc. I put a screen over the air...

Get some dryer sheets and moth balls and put them all over where the mice are.They will leave.They don`t like the smell.I can`t tell you where they are getting in because I don`t know but you will have to look around the vehicle and see if you can find a hole.It does not take a very gig hole either.Hope this helps.Good luck.

Jan 07, 2010 | 1991 Oldsmobile Ninety Eight Regency

1 Answer

The hood of a 1991 oldsmobile ninety will not open

the easiest way is to strip the end of the original cable and pull the cable to open the hood. if not you have to raise the car and try to reach the hood latch and open if from there.

Nov 23, 2009 | 1991 Oldsmobile Ninety Eight

1 Answer

Ignition/starter trouble

Replace ign lock cylinder and chip key. The tiny anti theft wires have broken going to lock cylinder.

May 16, 2009 | 1991 Oldsmobile Ninety Eight

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