1998 Mitsubishi Diamante Engine cooling Problems
- Complaints
- 1about this part
- Share
- 4%of 27 total for the year
- Median mileage
- 58,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 1998 Mitsubishi Diamante, 4% of the 27 complaints for this model year. Where a mileage was given, the median is 58,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I own a preowned 1998 mistubishi Diamante ls. When the climate control, particularly the heater is engaged, the smell of anti-freeze becomes quite apparent. Dealer claimed 2 years ago when I bought it that it was the smell of the chemicals used to clean the car during make-ready. Ethylen glycol fumes are toxic and this is a reoccuring defect in this model car from posts I have seen on various websites. I was later told that to fix this problem will cost close to $1000 since the car is out of warranty. Mitsubish issued a TSB addressing this problem, obviously they are aware of it. …”
NHTSA complaint #10100757, filed 2004-11, 58,000 milesRelated service bulletins
- 10170074Aug 28, 2015This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170071Jul 22, 2015This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170086Nov 1, 2012This is a service newsletter (Tech Talk) that was sent out to dealers.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2003 | 17 | 30% |
| 2002 | 38 | 31% |
| 2001 | 14 | 18% |
| 2000 | 7 | 14% |
| 1999 | 3 | 13% |
| 1998 | 1 | 4% |
| 1997 | 4 | 12% |
| 1995 | 2 | 17% |
| 1994 | 2 | 7% |
| 1993 | 3 | 10% |
| 1992 | 11 | 26% |
Other parts of the 1998 Mitsubishi Diamante
16 complaintsBrakes
3 complaintsVehicle speed control
3 complaintsElectrical system
2 complaintsEquipment
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTires
1 complaintsWheels
1 complaints
← All problems reported for the 1998 Mitsubishi Diamante
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology