I have a 1997 Montero Sport LS 4x4 with 89000 miles on it and for some reason my door sensors stay on all the time. When i hit bumps going down the road the light flickers.. seems like a loose connection, but i'm not sure... Does anyone have any ideas? also i was wondering if anyone has ever replaced a catalytic converter, mine has a hole in it, i am wondering cost and where to get the stuff. Thanks in advance