1998 Pontiac Bonneville engine problems
Owners reported engine problems in 189 complaints for the 1998 Pontiac Bonneville, 53% of the complaints on file. It is the most reported problem area for this model year.
At a glance
- Complaints
- 189 53% of this year's complaints
- Typical mileage
- 71,000 miles 87 complaints with mileage
- Crashes and fires
- 0 and 27
- Injuries and deaths
- 3 and 0
Source: NHTSA owner complaints
When engine problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 1 |
| 20k to 40k miles | 1 |
| 40k to 60k miles | 19 |
| 60k to 80k miles | 41 |
| 80k to 100k miles | 16 |
| 100k to 120k miles | 5 |
| 120k to 140k miles | 4 |
| 140k to 160k miles | 0 |
| 160k to 180k miles | 0 |
| 180k to 200k miles | 0 |
| 200k+ miles | 0 |
What the data shows
Of the 87 engine complaints that report mileage, the median is about 71,000 miles, and 24% were reported before 60,000 miles.
These complaints mention 27 fires, 3 injuries.
What owners wrote
Vehicle was being jumped started with an external battery pack, when cranked there was an internal engine explosion, blew manifold cover off and injectors out. Claim number 35-w429-786.
No events lead up to the failure, it was immediate. Car stopped dead in its tracks, started one more time before it died in 1/8th of a mile. I was informed that the intake manifold was the problem coolant leaked into the engine. Replaced intake manifold,gasket,oil filter, oil, coolant & spark plugs.cleaned out coolant from intake and cylinders. Change oil and filter.
Other problems reported for the 1998 Pontiac Bonneville
- Exhaust system 52 complaints
- Fuel system 37 complaints
- Electrical system 32 complaints
- Cooling system 28 complaints