A coolant leak may develop from the heater core, requiring replacement of the heater core.
Resources for the Repair and Maintenance of your 2003 Mitsubishi Diamante
2003 Mitsubishi Diamante
2003 Mitsubishi Diamante Problems
A brake pedal pulsation may be noted on brake apply. This is commonly caused by warping of the front brake rotors. Our technicians remind us that re-machining (turning) the rotors can correct this issue but the repair may last only a short time as the thinner rotors would be even more prone to warping. Replacement of faulty rotors with high quality parts is often the best option in these situations.
2003 Mitsubishi Diamante Recalls (Recent)
Summary: CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.Learn more »
Summary: CERTAIN SPORT UTILITY AND PASSENGER VEHICLES FAIL TO COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, ¿CHILD RESTRAINT ANCHORAGE SYSTEMS.¿ THE OWNER¿S MANUAL DOES NOT CONTAIN A STEP-BY-STEP DESCRIPTION FOR HEADREST ADJUSTMENT WHEN INSTALLING A CHILD RESTRAINT SYSTEM (CRS) TETHER STRAP.Learn more »
2003 Mitsubishi Diamante Questions and Answers
I'm trying to replace my front drive side drive shaft. Can I get some instructions on how to do this or a website I can visit?
My 03 Diamante's heated drivers seat has quit working. I cannot find a repair manual anywhere. There does not seem to be a designated fuse, so does anyone have any suggestions on what I could...
after replacing the altenator the cruise control quit working. any tips?
if the pipe or faulty
o-ring leaks from my heater core...what would it affect to make the neutral light flash alternately while im driving? and the car has poor acceleration...the car drives but i...
2003 Mitsubishi Diamante Reviews
2003 Mitsubishi Diamante' LS -- Very nice This has been my favorite car that ive owned so far. The luxury aspect of it reeled me in. The heated leather seating smooth ride. The fact that the memory buttons on the driver door always adjusted to my comfortable seating position AS i was getting! yaaa THATS NICE
I bought the car with 20,000 miles on it and the abs light came on in the first storm. I didn't have the pump replaced, too pricey. I now have 108,000 miles on it, have always had it serviced, but the valve cover gaskets are leaking now. I have had some brake jobs done and things like that but I think they did a lousy job, they have always squealed since. I don't like how low the front end is, it scrapes over low bumps and such. The interior is perfect (leather) all the fancy upgrades work except the heater never works down on the floor, just in the middle. A/C is great, speakers are a bit blown but think it was done at a shop when I had body work done, it was a great system. I have put a LOT of stop and go miles on it going to work and that is part of the problem with brakes and such. Its been a good car but think its getting tired. Not as good as a Toyota or Honda for sure.
I just purchased this car from a local dealer. It has 66k miles and so far everything seems to be okay. I did have the "service engine soon" light come on after a brisk breeze down a nicely paved rd (about 95 for less than a quarter mile). Culprit=O2 sensor. But the light has since gone off and not come back on. I will be tuning it up soon because it idles a little rough for my taste. slightly under 1k RPM Will report results.