1997 Oldsmobile 88 Problems

What owners report

Owners of this model year most often describe coolant leaks and engine problems tied to the plastic intake manifold, which complaints link to misfires, stalling and, in a few cases, engine-compartment fires after backfires. A second cluster of complaints covers stalling at low speed, transmission shifting or engagement trouble, and corroded brake lines on a car of this age.

1. 1
   Engine cooling

   Plastic intake manifold cracks and coolant leaks

   • 10 complaints (10%)
   • median 63,257 mi at 7.2 yrs old (5 state mileage, few)
   • 1 mention a crash, fire or injury
   • filed 1999–2016

   Owners describe coolant disappearing or pooling under the car, a coolant smell in the cabin, and hesitation, misfires or stalling that follow. Several say the plastic upper intake manifold or its gaskets cracked or wore out and were replaced, in some cases more than once, and that coolant then entered the engine. In a few accounts the manifold failed badly enough that the engine was declared ruined and replaced; dealers reportedly told some owners the part had been redesigned in later models. Reports cluster between roughly 20,000 and 90,000 miles, with several owners describing repeat failures over a few years on a car around five to ten years old.

   1 related service bulletin

   What to check: Look for coolant residue, dried orange or white crust, or wet spots around the upper intake area and beneath the car, and check whether the coolant level holds over a week. Ask for receipts showing whether the intake manifold or gaskets have already been replaced.

   2 excerpts from owner complaints in NHTSA records

   “I was driving my 1997 Oldsmobile 88 and all of a sudden it went boom and the car stopped suddenly and smoke barrelled out of the engine and would not turn over.I had to be pushed out of the wayto the next parking lot.we had our car towed to a mechanic shop and they said that we needed a a new engine.they in turn towed it to yet another reputable shop and they said that the engine blew due to a faulty intake manifold.it was plastic and with the heat of the engine aloowed it to leak into other parts of the engines cooling system.GM didn't take …”

   NHTSA complaint #10049454, filed 2003-12, 63,257 miles

   “We have had to replace the (plastic) manifold on our 1997 olds 88 three times in the last five years. This is obviously a manufacturer defect, yet no recall has been issued for this car (while recalls have been issue for similar defects on similar cars). We have spent over $2000 getting this problem fixed and that still doesn't fix the coolant in the engine which cannot be entirely cleared out without removing the engine and incurring other possible problems.”

   NHTSA complaint #10243103, filed 2008-09
2. 2
   Engine cooling

   Backfire followed by engine-compartment fire

   • 12 complaints (12%)
   • median 62,058 mi at 6.5 yrs old (3 state mileage, few)
   • 11 mention a crash, fire or injury
   • filed 1999–2010

   Several owners describe a loud bang or backfire on startup or while driving, after which smoke and flames appeared under the hood and the plastic plenum or engine cover came apart. Some reports say a fire department or shop traced it to fuel leaking onto the engine, and in a few cases the car was a total loss or needed a replacement engine. These accounts are a small share of the sample. Described on cars spanning roughly 60,000 to 155,000 miles, with several instances occurring at the moment of starting the engine.

   What to check: Have the fuel lines, pressure regulator and intake area inspected for leaks or a fuel smell before buying, and ask whether any fire or fuel-related repair has been done. After starting, listen for hard backfiring or a strong fuel odor under the hood.

   2 excerpts from owner complaints in NHTSA records

   “While driving 65 MPH vehicle all of a sudden came to a stop. Owner did notice smoke coming from the vehicle. Fire department stated that the engine manifold leaked fuel onto the enigne, which started a fire. Fire was put out by the fire department. Vehicle has been totalled. Referenced in ea02-030”

   NHTSA complaint #850677, filed 1999-10

   “Vehicle had been parked for awhile. Had got in and inserted key in ignition and started it. Suddenly, vehicle blew up and then caught on fire. Engine compartment had blown. Had no indication of cause of problem. Fire possibly caused by an electrical failure.”

   NHTSA complaint #882968, filed 2001-03
3. 3
   Transmission and drivetrain

   Transmission hesitates, slips or loses engagement

   • 10 complaints (10%)
   • typically at 2.5 yrs old
   • filed 1997–2002

   Owners report the transmission dropping into neutral while the selector shows Drive, delayed or harsh engagement when shifting into reverse, and early upshifts that leave the car short of power. Some describe a complete loss of power on the highway and being told a replacement transmission was needed. Dealers in several accounts could not reproduce or diagnose the problem. Complaints span from roughly 30,000 miles upward, including one car reported around 49,000 miles that lost power on the highway.

   What to check: Test the car from cold: shift into Drive and Reverse and note any delay or clunk, and drive at steady speed watching for slipping or an unexpected drop out of gear. Ask whether the transmission or valve body has ever been serviced or replaced.

   2 excerpts from owner complaints in NHTSA records

   “The car lost complete power on the highway. Started again with enough power to pull off the road. The GM dealer in traverse city mi. Stated the car needed a complete transmission and drive shaft. If this happened on a busy road, it would be very dangerous. This car was never abused and should not have this problem at 49000. Miles.”

   NHTSA complaint #709334, filed 1999-07

   “While driving the vehicle suddenly stopped with no previous warning sign of trouble, upon inspection consumer found out that the vehicle needed a new transmission, consumer believes that the transmission should not have failed at only 30k miles. Nlm”

   NHTSA complaint #559200, filed 2001-01
4. 4
   Brakes

   Corroded brake lines and rear brake vibration

   • 13 complaints (13%)
   • median 94,500 mi at 10.5 yrs old (2 state mileage, few)
   • 1 mention a crash, fire or injury
   • filed 1997–2010

   Owners describe brake lines rusting through and leaking fluid, with one report of brakes failing while pulling out of a driveway. Others describe vibration and shaking through the wheel or pedal when braking, traced to rusted or worn rear rotors and hubs, with parts replaced but the shudder returning. One owner notes the rear brakes showed little wear because they rarely engaged in normal driving. Most reports come from cars beyond roughly 30,000 miles, with several on vehicles ten or more years old at the time of the complaint.

   What to check: Have the steel brake lines inspected along their full length for rust and seepage, especially under the car, and ask for the last brake fluid service. During a test drive, brake firmly from speed and note any pulsation or pulling.

   2 excerpts from owner complaints in NHTSA records

   “My 1997 chevrolet lumina, 1997 Oldsmobile and 1998 Oldsmobile all have had brake lines fail due to corrosion in the last two years. The most recent failure almost resulted in an accident as the brakes failed during a panic stop to avoid a collision. All vehicles had steel brake lines replaced to correct the failure. I tend to keep my cars until they are ten plus years old. The majority of my cars have had brakes fail due to corrosion of the tubing. I was wondering why stainless steel tubing is not required on brake lines?”

   NHTSA complaint #10308104, filed 2010-02, 129,000 miles

   “While driving applied the brakes and the brakes started slipping which did not allow the vehicle to stop. Dealer cannot find the problem. This slipping of the brakes caused the owner to have an accident.”

   NHTSA complaint #823325, filed 1998-05
5. 5
   Engine cooling

   Engine stalls or cuts out while driving

   • 9 complaints (9%)
   • median 100,000 mi at 15.6 yrs old (2 state mileage, few)
   • filed 1997–2013

   Complaints describe the engine quitting without warning at speed, at traffic lights, or while slowing for a turn, sometimes restarting immediately and sometimes not for several minutes. Owners report multiple dealer visits where the problem could not be reproduced, and some mention diagnostic codes for random misfire or an oxygen sensor circuit. A few reports tie the stalling to fuel or ignition faults rather than the manifold. Reported across the mileage range, from cars with only a few thousand miles on them to well over 100,000, with no clear seasonal pattern in the sample.

   What to check: Ask whether the car has a history of intermittent stalling and whether the check engine light has been on. A scan for stored misfire and sensor codes, plus a look at the spark plug wires and ignition components, is a reasonable pre-purchase step.

   2 excerpts from owner complaints in NHTSA records

   “For several months we were noticing leaks from the car on the driveway. We knew from touching it was not oil. The car started to hesitate at times and feel like it was going to stall out. Eventually it did stall out and continued to do so, it always started right up though, so we knew it wasn't the battery. The check engine light went on when it stalled. …”

   NHTSA complaint #10402922, filed 2011-05, 85,000 miles

   “With the cruise control engaged at 72 mp, driver stepped on the accelerator pedal to pass slower traffic. Once he took his foot off the accelerator pedal, vehicle slowed down, and did not kick back into cruise control, and the engine cut off. The problem was reported to the dealership. The dealer could not duplicate the problem.”

   NHTSA complaint #846293, filed 1999-09

Buying note. On a car this old, the main things to verify are the condition of the plastic intake manifold and cooling system and the steel brake lines, since both appear repeatedly in owner complaints and can be costly if they fail. A pre-purchase inspection by a shop familiar with these cars, plus service records, is worth more than the car's cosmetic condition.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.