20 Most Recent 1988 Oldsmobile Ninety Eight Questions & Answers


maf/vaf sensor
throttle position sensor
idle speed sensor
take it to an accredited service center to have it properly diagnosed

1988 Oldsmobile... | Answered on Dec 22, 2017


What is the status of the timing belt (or chain) on the vehicle? Was it ever replaced by a competent mechanic?

1988 Oldsmobile... | Answered on May 15, 2017


This is an old diagram I found, hope the wire colors are correct?The dark blue wire carries voltage to position switch for back up lamps. When in reverse the lite green wire carries voltage to back up lamps and the black wire is ground.
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1988 Oldsmobile... | Answered on Nov 23, 2016


The system in your car is all vacuum controlled so the first this you need to do is locate the main vacuum source under the hood. It is normally located on the passenger side near the firewall. You may see a plastic ball shaped canister or it could be square. Make sure that device has vacuum going to it from the engine

1988 Oldsmobile... | Answered on Sep 05, 2016


First check all the linkage in the shifter lever parts, Something in the steering column may be blocking it, or a a linkage part bent under the car. Otherwise it is inside the transmision and would be a big job to fix it.

1988 Oldsmobile... | Answered on Dec 30, 2014


If your asking about the radio channels and radio clock, there is a wire that is always hot that has to be connected to the radio's always alive wire. If it is not hooked to the wire that is always hot, (like hooked to an ignition wire) then it will not be hot and every time the ignition is turned off, you will lose the clock time and channels memory. If you have a test light, check the wires at the radio (with the key off) and see which one is hot. If none are hot, then you have a blown fuse or wire broken.

1988 Oldsmobile... | Answered on Jun 07, 2014


A car that old will be short of regular spares. All brake systems have a master cylinder for the brakes and the difference in some models is that instead of a vacuum brake booster to assist with the braking they have hydraulic assistance. Basically from what you describe unless you are a vehicle restorer then I would advise steering clear on this one

1988 Oldsmobile... | Answered on Feb 23, 2014


If it is a manule trans then you need to shift it sooner. And for the reason it will not go into third gear is the gear could be gone or the saycronizer is bad. You will have to put in a new trans or get this one fixed in order to get third gear.

1988 Oldsmobile... | Answered on Dec 10, 2012


some of the olds eighty eights have locking hubcaps. so call dealer to find out how to remove. hope this helps! good-day !

1988 Oldsmobile... | Answered on Sep 18, 2011


If you replaced only the coils, and not the module beneath, you wasted your time. Most times the module is what causes this.

1988 Oldsmobile... | Answered on Aug 20, 2011


There are lots of nicknames for those lights, on any car!! For our purpose here we will just call it a side courtesy lamp. To access the bulb try one of these: Look at the edges of the lens for small groove or slot. If it has them use a small screwdriver to gently pry it out of the fixture. OR The entire fixture may POP out of the pillar. OR Remove the interior trim piece on the backside of the pillar to gain access to the bulb. Hope this helps.

1988 Oldsmobile... | Answered on Aug 19, 2011


Hi, Follow the top rad hose and at the end of that is the thermostat. Undo the two bolts and there it is.
But first you will have to drain some fluid out to make it easier to access. Good luck.

1988 Oldsmobile... | Answered on Jul 11, 2011


Make sure that you have fire and fuel. You may want to spray some ether into the air intake. If it doesn't want to start and it has fire, you may want to consider the timing chain.

1988 Oldsmobile... | Answered on May 12, 2011


Locate the distributor the top has 4 1/4 screws pull them out then the cover will lift off exposing the coil and wires ,take 4 more screws one on each corner of the coil( some you only need to remove the first 4 screws and they hold the coil as well) then take needle nose pliers and pull the wires out of the cap make sure they are unplugged, then just lift the coil out watch for the insulator and spring that may stick to the bottom of the coil.......

1988 Oldsmobile... | Answered on Dec 01, 2010


This varies depending upon the specific tire sizes. Usually you can find this info molded right on the tire itself. You just have to be able to read the tiny print. Check this out and reply back if you need more help.

Hope this helps.

1988 Oldsmobile... | Answered on May 09, 2010


It sounds like the valve body is sticking.. For the cost I would get a replacement transmission instead

1988 Oldsmobile... | Answered on Apr 03, 2010


a converter is about $125-150 and most places takes about an hour to 1 1/2 hr to replaced figure $65-75 per hr labor most exhaust places may be cheaper and most give a free estimate

1988 Oldsmobile... | Answered on Feb 26, 2010

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