What should I be checking first? The SUV starts and runs fine initially, but after driving a few miles with modest RPMs, when I come to a stop and hold the brake pedal while it's still in gear, the RPMs dip very low and it usually stalls. When it does stall, I can start it right back up with no problems. The only way I can keep it running is by switching to N and revving the engine a little....which is a pain in the *** in stop and go traffic!
EDIT: It's a 2000 Montero Sport, BTW...