1992 Mitsubishi Diamante Engine cooling Problems
- Complaints
- 11about this part
- Share
- 26%of 42 total for the year
- Median mileage
- 120,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 11 complaints about the engine cooling of the 1992 Mitsubishi Diamante, 26% of the 42 complaints for this model year. Where a mileage was given, the median is 120,000 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.
“Mitsubishi has produced 3.0 liter v6 engines from about 1990 through 1996 that exhibit chronic exhasut valve guide function deteroriation after approximately 60,000 miles. This results in heavy oil consumption and eventual engine failure. This engine was utilized in the Mitsubishi diamianti, 3000gt, dodge caravan, chrysler town & country, plymouth voyager among others.”
NHTSA complaint #10048983, filed 2003-12, 120,000 miles“Hello and thanks first of all for your time, until july 5th of 1999 I truely enjoyed my car. I was driving on i57 on july 5th at 65 MPH and my car suddenly lost power. I having roadside service called from my cell phone a tow truck. The tow truck driver arrived who was also a repair person and also owner of the repair shop. He informed me he would tow my car to his shop and notify me the next day of the repairs. I being 1 1/2 hours from home had to call a relative to pick me up. I was 11:30 pm I had no way to rent a car. …”
NHTSA complaint #762368, filed 2002-05“1. Front brake rotors were replaced at mileage 82500 for pulsation when braking. New rotors began to pulsate before 5000 miles use. Rotors were turned and trued by dealer at 90,100 miles, but began to pulsate again with in 2000 miles. 2. Engine exhausts light grey smoke upon acceleration after idling for 2 minutes or more. Engine oil consumption estimated at 1 qt/3000 miles.”
NHTSA complaint #731515, filed 2000-09“While driving and stopping at a light, when taking off smoke pours out of the exhaust. When sitting for a long period of time, the smoke will build up and come out by itself. Dealer states a valve needs to be replaced.”
NHTSA complaint #827604, filed 1998-09“Both front driver's/passenger's seat belts do not retract. If leaning backward, seat beltremains in a sagging loop, theu do not tighten without unbuckling the seat belt, replaced leaking valve cover gasket.”
NHTSA complaint #515302, filed 1997-03Engine 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 1992 Mitsubishi Diamante
8 complaintsAir bags
6 complaintsElectrical system
6 complaintsSuspension
5 complaintsSeat belts
4 complaintsTransmission and drivetrain
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsEquipment
2 complaintsSteering
2 complaintsBody and structure
1 complaintsVehicle speed control
1 complaintsWheels
1 complaints
← All problems reported for the 1992 Mitsubishi Diamante
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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