Oldsmobile Ninety-Eight

The Oldsmobile Ninety-Eight (98) was a full-size automobile manufactured by General Motors from 1941 to 1996. This model featured the highest-grade exterior and interior trim, as well as the Twilight Sentinel.

1,316 Questions
Fuel Filters
Chevy Astro
Oldsmobile Ninety-Eight

If the front passenger side of your Oldsmobile Ninety-Eight with 19-inch rims leans and rubs the tire how can you fix this problem?

First, diagnose the reason your car is leaning significantly to the right. Is your passenger or cargo very heavy? Does this occur even when you don't have a passenger or cargo? If your car leans to the right when there is no additional weight on that side, you may wish to get your shocks checked. A shock in disrepair may be to blame for your car's misalignment. It may also be possible to get shocks with a higher resistance to prevent weight inside the car from being an issue.

or...

You can either get the correct size rims or put coil spacers in the springs (makes them stiffer).

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Timing and Firing Orders
Chevy Silverado
Oldsmobile Ninety-Eight
Chevy 350

How do you set the timing on an 1989 Oldsmobile 98 Regency?

Hey Faith==You don't. It is electricaly controled. GoodluckJoe

how about the camshaft, valve timing, if the chain jumped on the sprocket wouldn't that cause timing to be off?

I believe 1985 Regencies had a distributor cap and was adjustable. 1986 and on are "fixed" and computer-controlled. Nothing you can do on it. If your car is "pinging" on acceleration or while going uphill, try the next higher octane gasoline. My 1990 Regency pings on regular gas, I have no problem on midgrade.

GMS

Another member brought up a good point: if the timing chain jumped a tooth on the sprocket, the timing would definitely be off. What are your symptoms/reasons for wanting to adjust the timing? GMS

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Timing and Firing Orders
Oldsmobile Eighty-Eight
Oldsmobile Ninety-Eight

What is the firing order for a 1991 Oldsmobile ninety-eight?

For your 1991 Oldsmobile 98: Firing Order 1-6-5-4-3-2 Standing in frony of the vehicle the cylinders from left to right are 1-3-5 and the farthest one on the backside are from left to right 2-4-6 NOTE: There are 2 different motors used this year. The Canadian motor produced runs in reverse order. But this motor is very rare as they only istalled approx. 500 of these motors in the 1991 model. Most of them were used in following year.

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Water Pumps
Windshields and Wipers
Jeep Cherokee Sport
Oldsmobile Ninety-Eight
How To

How to repair water pump on a 1995 Oldsmobile Ninety-Eight 3.8L V6?

Using 18 mm socket place on tensioner and pushing towards back of car remove the serpentine belt. Now remove the 4 bolts that hold the pully onto the waterpump. Now loosen the motor mount (you will have to swing it out of your way unless you have short thin wall sockets to get to the right side bolts). You will also have to support your engine so that it doesn't drop, use a Bottle Jack and common sense. Do not place on harmonic balancer.

The metric sizes you will need are 10, 13, 15 and 18.

848586
Oldsmobile Eighty-Eight
Oldsmobile Ninety-Eight
Idioms, Cliches, and Slang

How much horsepower is in an 89 Oldsmobile ninety-eight?

My 1993 Olds Ninety-Eight 3800 has 290.

AnswerUnless you have a supercharged engine,horsepower ratings for the 3800 (3.8 liter)V6 is around 170.

The naturally aspirated 3800 Series II is rated at 205 HP while the supercharged version is rated at 240 HP.

The engine in the 1989 ninety eight is the LN3 V6 which is rated at 165 HP

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Spark Plugs and Wires
Ford Ranger
Oldsmobile Ninety-Eight

What is a spark plug order on a 1991 Oldsmobile ninety-eight?

For your 1991 Oldsmobile 98: Firing Order 1-6-5-4-3-2 Standing in frony of the vehicle the cylinders from left to right are 1-3-5 and the farthest one on the backside are from left to right 2-4-6 NOTE: There are 2 different motors used this year. The Canadian motor produced runs in reverse order. But this motor is very rare as they only istalled approx. 500 of these motors in the 1991 model. Most of them were used in following year.

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Fuel Filters
Oldsmobile Delta 88
Oldsmobile Ninety-Eight

Where is the fuel filter located on a 1989 Oldsmobile Delta 88?

the fuel filter is located on the drivers side near the back wheel on the bottom of the car in a bracket. hope that helps you.

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Oldsmobile Ninety-Eight
Ford Explorer XLT
Turn Signals and Hazard Lights
1995-2005 Chevy Cavaliers

Where is the flasher relay for a 1995 Oldsmobile 98 located?

in the dash area inside car

737475
Alternators
Oldsmobile Ninety-Eight
VW Jetta
1995-2005 Chevy Cavaliers

If you are attempting to replace the alternator how do you release the belt tensioner on a 1988 Oldsmobile 98?

The alternator is sitting on a guide. It is held on it by a bolt. All you have to do is loosen that bolt and the belt pressure sould realese.

Look around for a wheel that is touching the belt but appears to have no other purpose...this is the tensioner. Use a long handled wrench on the nut in the middle of the tensioner.

there should be a diagram under the hood, in front of the radiator, that will show belt routing and show where the tensioner is...

737475
Car Computers and Sensors
Oldsmobile
Oldsmobile Alero
Oldsmobile Ninety-Eight
Oldsmobile Silhouette

Where is the 02 sensor on a 1992 98 Oldsmobile and how easy is it to replace?

It mounts in the rear manifold at back of motor just after the 3 cylinders piping converges into the single outlet - there will be a silver cover on it and a wire (usually black that comes to a connector about 6 " away. You can use a wrench (about 1" size) or a specific tool to remove it. Do this with engine cold or the threads will risk being damaged. The new sensor comes with special beaded lubricant for thethreads on the O2 sensor. Be sure to use it BUT be careful not to get any on the sensor itself. The job can be bit aggravating but not too terribly difficult.

727374
Starters and Ignition Systems
Oldsmobile Ninety-Eight
Toyota Tundra
Ford F-250
How To

How to replace the starter?

Put front of car on jackstands or ramps. crawl under the front, right in the middle of the car... about 2 feet from front bumper should be your starter... Oh, disconnect negative side of battery first... remove wires from starter... remove the black plastic cover to get at the bolts (pull it forward), remove the two bolts holding starter slowly, careful not to drop the starter, they are heavy, awkward, and can leave quite a dent in your forehead...replacement is the reverse of removal...

717273
Fuel Pumps
Ford Ranger
Oldsmobile Ninety-Eight
Ford Explorer Limited

How do you find out if your fuel pump is bad on your 1986 Oldsmobile Ninety-Eight without dropping the gas tank?

Hey John==At the battery there is a tan or brown wire that if you touch it to the pos battery post should make the pump run. This bypasses the relay. GoodluckJoe

Also, you can put a fuel pressure tester on the injector fuel rail - there is a connector that looks like an air pressure valve.

Turn on the key and the pump should run. Pressure s/b typically arount 36 - 45 lbs. The motor will run with pressure down to about 28 - 30 lbs although maybe not very well.

Below about 24 lbs it will simply not run at all.

Sometimes when a pump goes it quits entirely, and sometimes it just gets tired but doesn't stop completely.

Vic M.

707172
Oldsmobile Ninety-Eight
Car Heaters

How do you replace the thermostat located on a Oldsmobile Ninety-Eight?

Follow the top radiator hose over to the engine and where it connects to the thermostat housing. There should be two bolts holding the housing to the motor. Remove the housing and replace the thermostat and gasket. The larger side of the thermo goes in the engine.

697071
Oldsmobile
Oldsmobile Alero
Oldsmobile Aurora
Oldsmobile Ninety-Eight

Can 22 inch rims fit on a 1987 98 Oldsmobile?

You can fit 22's on an olsmobile but you would have to raise the car up a couple of inches

676869
Oldsmobile Ninety-Eight

What may be causing a 1989 Oldsmobile Ninety-Eight to melt EGR's on a regular basis?

The 89 Olds 98 uses a series-1 3800 motor and the EGR valve is a 3 piston unit mounted on a flange with direct access to the exhaust manifold. If it literally melts things, this indicates tremendous heat getting up into the EGR assembly on a prolonged and continuous basis. 1 of 2 things seem possible. 1 The timing on the car is off so badly that the exhaust temp is running constantly way above what is should be. This could be a computer control problem, an O2 sensor issue or a partially blocked catalytic converter in the exhaust. 2 The computer (ECM) also controls the opening and closing of the 3 pintle valves in the EGR assembly - it could be malfunctioning in this area. One last thought - I had this happen - If you get water and then rust up into the 3 small pintle valves and they are then locked open and cannot function, this would allow heat to be exorbitant continuously in the unit and might cause failure. Also, the ECM is "blind" to this as it has no feedback mechanism to know if the electrical signals to these magnetic valves has properly caused them to work in the mechanical sense.

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Serpentine Belts
Oldsmobile Achieva
Oldsmobile Ninety-Eight

How do you replace the old serpentine belt on a 1996 Olds Achieva?

There is a tension pulley located on the left side and down about half way down with a arm attached to it, you have to pull the tension arm up to release the belt. actually on the 96 model it not that simple just to change the serpentine belt you have to disconnect MOTOR MOUNT before you can remove belt i know that sound crazy but i have a 96 acheiva sc v6 that i change belt on not pretty!

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Fuel Pumps
Oldsmobile Ninety-Eight

Where is the fuel filter located on a 1992 Oldsmobile Ninety-Eight?

fuel filter is located near engine. access it from under passenger side door. its right where fuel line curves up toward engine. fuel filter is located near engine. access it from under passenger side door. its right where fuel line curves up toward engine.

596061
Dashboard Lights and Gauges
Oxygen Sensors
Oldsmobile Ninety-Eight
Late Model 1979-New Ford Mustangs
How To

How to fix a speedometer on a 1984 Oldsmobile 98 regency?

You have to find out what's wrong with it first If the odometer is working then the speedometer "head" needs repair. This requires some disassembly to get the speedometer out of the dash. If the odometer is not working it is most likely the inner cable to the transmission. Take the cable loose from the transmission and remove the gear. Check the gear for broken teeth and a worn out square hole where the cable fits into it. Try to pull the inner cable out by hand or a little help with pliers. If it is broken it will come out. There is a clamped end and stop ring at the speedometer end that will keep that end of the cable in the sheath. There is a possibility that the clamp has come loose at that end also. It would help to remove both ends so you can turn the cable at one end and have someone check the other end for turning also. An inner cable can be replaced. Sometimes a sheath that old will have rust damage and need replacement also. Put some speedometer cable lubricant on the cable while you are working on it and if you replace it.

616263
Electric Windows
Chevy Silverado
Oldsmobile Ninety-Eight
Ford Escape XLT

How is the power window wiring on a 1965 olds 98 run?

I have a manual with full electrical schematic drawings, good luck. len@cureco.8m.com

606162
Oldsmobile Eighty-Eight
Oldsmobile Ninety-Eight
Door Panels and Handles

How do you remove the door panel on an Oldsmobile Eighty-Eight?

I had to remove my drivers side door panel on a 1996 Olds 88 about 3 weeks ago. Remove the screws (2) from the inside center of the door. Slide out the plastic box that the screws were removed from. Lift the entire panel straght up from the bottom. If you have difficulty lifting the panel you can pull out on the lower back portion of the panel and expose the panel holder(s). These are two pieces of plastic. The piece that attaches to the door is a "press-in" that looks like a large screw with an exposed plastic disk. The piece on the door panel is a "receiver" that has an opening that the disk of the "press-in" slides into from the bottom. Forcing the panel away from the door will probably not break these, but lifting the panel up off of these holders is the preferred method. The are about 6-8 of these panel holders at different locations along the edges of the door.

HTH

Good luck.

606162
Chevy S-10
1995-1999 Dodge & Plymouth Neons
Oldsmobile Ninety-Eight
Honda Civic CX

How do you replace the guide block on the window track of an 1986 Olds 98?

I dont know if this will help or not, but on a 86 buick I had we just jurker the window out of alignment and snaped a new plastic glide in place, then pushed it back into its track, its be fine sence. Good luck

606162
Steering and Suspension
Ford Windstar
Ford Escort
Oldsmobile Ninety-Eight

How do you change the front wheel bearings on a 1991 Olds 98?

YOU HAVE TO TAKE THE HUB ASSEMBLY OFF AND HAVE A SHOP PRESS THE BEARING,OR REPLACE THE HUB ASSEMBLY FROM A SALVAGE YARD.

606162
Auto Parts and Repairs
Starters and Ignition Systems
Oldsmobile Ninety-Eight
Cars & Vehicles

How do you change starter on 1983 Oldsmobile Ninety-Eight?

Hey Deborah==Remove the neg battery cable then the wires on the solonoid. Then take out the 2 bolts that hold it on. goodluckJoe

Disconnoct the negative battery terminal. After the car is up on appropriate support so one can work under it, the four bolts, 10MM, that hold the torque converter cover on must be remover and the cover removed. Then, put blocking or a small hydraulic floor jack under the starter and remove the front bolt that holds the heat shield to the starter. Then remove the two bolts,15MM, on the gear end of the motor. Slowly lower the starter down until the wiring can be removed. Be careful the stud(s) stays in place when the nut is removed. (Also when re-installing the new starter). Reverse the process to install the new starter.

606162
Auto Parts and Repairs
Serpentine Belts
Oldsmobile Ninety-Eight
Oldsmobile Regency

How do you replace the serpentine belt on a 1994 Oldsmobile Regency '98?

Pry the tensioner and remove the old belt. Then reinstall it with the schematic on the fan shroud. If no schematic, draw one before you remove it. Don't rely on memory.

596061
Chevy Silverado
Heater Cores and Blower Fans
Oldsmobile Ninety-Eight
Ford Bronco XLT

How do you replace the heater core in your 1998 Olds Intrigue?

it is in the middle of the car inside thedash area on the very bottem of the coverd areA back by the foot area you need 7mm and alot of time about 2 hours to change it

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