thanks to all .. i will prob get the cat changed .. WEIMAN..can you hook me up with your friend at the emission station? She has spent about 250.00 so far on the car ..a place says they can put new cat on for 149 plus tax ..is this a good price? what about the machine thats supposed to tell what is exactally wrong? 100.00 just to put on machine seems very costly. i prob will just change the cat instead.