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.*ak this engine was utilized in the mitsubishi diamianti, 3000gt, dodge caravan, chrysler town & country, plymouth voyager among others.
The worst 1992 Mitsubishi Diamante problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine11
- Brakes8
- Airbags6
- Electrical6
- Suspension5
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine11
- Brakes8
- Airbags6
- Electrical6
- Suspension5
- Seat belts4
- Transmission4
- Visibility4
- Steering2
- Acceleration1
- Body1
- Wheels1
Recalls 2
Service brakes, hydraulic: foundation components: hoses, lines/piping, and fittings
- What is wrong
- Under conditions of full lock steering and full suspension travel, the left or right front wheel-side brake hose can crack, resulting in brake fluid leakage.
- Risk
- Brake fluid leakage will cause illumination of the brake warning lamp and reduction in braking effectiveness increasing the risk of a vehicle accident.
- Remedy
- Dealers will replace the left and right front wheel-side brake hoses with revised hose assemblies.
Recall number 96V143002 · Recall details
Service brakes, hydraulic: foundation components: hoses, lines/piping, and fittings
- What is wrong
- Under conditions of full lock steering and full suspension travel, the left or right front wheel-side brake hose can crack, resulting in brake fluid leakage.
- Risk
- Brake fluid leakage will cause illumination of the brake warning lamp and reduction in braking efficiency increasing the risk of a vehicle accident.
- Remedy
- Dealers will replace the left and right front wheel-side brake hoses with revised hose assemblies.
Recall number 96V143001 · Recall details
Technical service bulletins for the 1992 Mitsubishi Diamante 14
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This is a service newsletter (Tech Talk) that was sent out to dealers.
- This is a Technical Service Bulletin sent to dealers
- This Technical Service Bulletin updates the door adjustment procedure in the Body Section of the...
- Mmsa has determined that under certain conditions, the front lower brake hoses may develop a crack,...
- Information about improved automatic transaxle end clutch
- Information containing additional glass antenna cautions and inspection procedures
- Service manual revision on supplemental restraint system (SRS) cautions and warnings
- Mut-ii scan tool warranty
- Corrected upper oil pan installation procedures - service manual revision
- Corrected cylinder head bolt tightening procedures - service manual revision
1992 Mitsubishi Diamante fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 3.0L 6‑cyl | FWD | 16 | 22-23 | 18-19 |
What 1992 Mitsubishi Diamante owners say
Most recent owner complaints, unedited.
The motor mount failed, which caused the vehicle to jerk heavily.
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. The following morning mr loy the owner called me to advise me that my motor had gone out. I the asked what the cost another motor would be I was advised a used motor would be $2915. I then made about 50 calls to other service centers to find out the $2900 was a fair price. My has always been well maintained. I was of course very upset to find out by about 35 of the 50 mechaincs I talked to advised me, I you let the diamonte idel it will burn oil then without notice your engine will blow. I of course still owing money on my car had it repaired. Along with a $110 towing bill from the interstate. This actually getts worse. In november of the same year(1999) this whole issued repeated! This time I was on my lunch hour and my car lost power again. I had my car towed to a nearby imported shop. Certainly knowing this time it would not be a big repair welllllllll my engine had gone out again!!!!!! This time like the first time in tears. This repair for the second motor cost my $3200 . Thanks
Consumer states the front and rear engine seal and piston rings are inoperative, the vehicle smokes excessively.
Horn button has fallen off 4 times, has been replaced by dealer.
Drivers side belt does not retract.
No summary listed for above vehicle.
Whenever consumer turned off the car and tried to start again it won't start. Took vehicle to dealer, and they said the neutral safety switch was bad.
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.
While driving vehicle will be burning oil, on internalcombustion at all times.
Compare the 1992 Mitsubishi Diamante
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Questions about the 1992 Mitsubishi Diamante
Is the 1992 Mitsubishi Diamante reliable?
Owners have filed 42 complaints about the 1992 Mitsubishi Diamante, fewer than a typical Diamante model year.
What is the most common problem with the 1992 Mitsubishi Diamante?
Engine and cooling, with 11 complaints. Next is brakes (8).
How many recalls does the 1992 Mitsubishi Diamante have?
2 recalls, covering service brakes, hydraulic.
What year does the Mitsubishi Diamante have bad engine?
The Mitsubishi Diamante model years with the most engine complaints are 2002 (38 complaints), 2003 (17 complaints) and 2001 (14 complaints).
What gas mileage does the 1992 Mitsubishi Diamante get?
Official estimates for the 1992 Mitsubishi Diamante range from 18 to 19 mpg combined. The most efficient version (3.0L 6-cyl, FWD) gets 16 city and 22-23 highway.
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