Saab Repair: help, oxygen sensors, digital multimeter

Question
hi, do you know where can i buy good & cheap OXYGNE SENSOR TESTER (diagnostic tool) for oxygen sensors. ANY MODLE # OR WEB WHERE I CAN BUY
THANKS

Answer
What do you need is a digital multimeter,for specifications, check www.saabnet.com, go to bulletin boards, choose your Saab model type, and search oxigen sensor reading.
Call me 310-666-2406 for more information.
Most problem with sensors are related to the pre-heater, so check the fuse first,