20 Most Recent 1991 Oldsmobile Ninety Eight Questions & Answers

Unplug headlight connectors. With switch on, test for voltage going to connectors. If there's voltage then headlights are burned out. If no voltage to connectors, check headlight fuse. If fuse is good than its likely the headlight switch on the dash/steering column that's causing the issue.

1991 Oldsmobile... | Answered on Oct 25, 2014

Chilton's or, Mitchells books can Guide you through this repair; they are availible at autopart stores or online at; Chiltons.com or. Mitchellsonline.com

1991 Oldsmobile... | Answered on Oct 15, 2014

MANY possibilities! Assuming that your security light is not staying on--First, you must determine if it/s a no spark or a no fuel condition and take it from there.....

1991 Oldsmobile... | Answered on Jun 16, 2014

Hi Eugene, My suggestion is to inspect the constant power line into the ignition switch. Regards John

1991 Oldsmobile... | Answered on Jun 07, 2014

you need to get it programmed by either dealer or pcmforless.com

1991 Oldsmobile... | Answered on Oct 24, 2012

Check the ignition fuse if have no way to tell u which one then check all of them

1991 Oldsmobile... | Answered on Jul 24, 2012

There are two ways that i know of to bypass this system. Both are on this link along with info, pics, and other useful info. You CAN fix this yourself.


1991 Oldsmobile... | Answered on Sep 24, 2011

It is. Here's a link where you can buy one, and instructions on how to program it. http://www.ekeylessremotes.com/categories/oldsmobile-remotes/1991/ninety-eight.html

1991 Oldsmobile... | Answered on Sep 15, 2011

Generally it is the Coils or the ignition control module that needs replacing. Hope that helps.

1991 Oldsmobile... | Answered on May 02, 2011

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 ...final fix though ...clean all cable connections /grounds and if that dont fix replace the electric part of the ignition

1991 Oldsmobile... | Answered on Jan 23, 2011

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

1991 Oldsmobile... | Answered on Sep 27, 2010

when you turn the key does it try to crank over? or just nothing at all? if nothing at all could be your ignition switch

1991 Oldsmobile... | Answered on May 05, 2010

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: http://newrockies.ca/vatsbypass

1991 Oldsmobile... | Answered on Feb 01, 2010

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.

1991 Oldsmobile... | Answered on Nov 23, 2009

The PCMor powertrain control module is only on 1996 and newer cars.Earlier models have a ECM or electronic control module/pcm.You want to change the ECM if its a 1992.Its located under the right hand side of the instrument panel.The ecm has a prom( programmable read only memory)in it.You will need to remove this from the old ecm and install in the new ecm.The ECM/PCM can be used in many different GM vehicles but the prom is very specific and must be used only in the vehicle it was designed.The prom will not come with the new ecm and must be carefully removed and installed on the new ecm.There also is a CALPAK in the ECM ( A devise for fuel delivery) This may come with the new ECM But make sure all parts are the same.You should get a vehicle repair manual to do this job correctly,and make sure you do not damage your PROM.Your PROM is very IMPORTANT!

1991 Oldsmobile... | Answered on Jul 05, 2009

a bad power booster will cause a hard pedal, u have a master cylinder problem

1991 Oldsmobile... | Answered on May 21, 2009

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