One problem related to recreational vehicle lpg tank valve/gauge has been reported for the 2004 Mitsubishi Montero Sport. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mitsubishi Montero Sport based on all problems reported for the 2004 Montero Sport.
Heat gauge is faulty and it will blow hot heat only out of driver side vents and blows cold out of the rest of the vents. Heat gauge says its running fine but it is really overheating to the boiling point. I am not sure how long it has had this problem as I just bought it 2 weeks ago and have had no use for the heat till now and never drove it far enough till today when I noticed the heat gauge and heard it boiling over with steam coming out of the hood.