: MAF SENSOR ISSUE 2000 Cadillac Seville SLS

04-06-11, 07:23 PM
2000 Cadillac Seville SLS code P0101 and code P0420. cat efficency low bank one. I changed the MAF sensor twice the car improved somewhat however, it does not have the power it should have. At highway speeds it will not respond like it should when you floor the vehicle get down in the gas . no kick or punch like it should. The vehicle will get up to a high rate of speed but not fast like it should. I drove the car and observed the cat converter it did not apprear to be hot or look red. however i did not check at night. Im not sure if I should change the MAP sensor, fuel filter, cat converter, not sure what else to check. any suggestions would be helpfull


04-06-11, 09:04 PM
Sounds like you may have a partially clogged CAT.

04-06-11, 10:55 PM
thanks, the fuel filter appears to be the original one on the vehicle going to change that to. is there any thing i can purchase to help unclog that convertor

04-07-11, 01:15 AM
A new CAT.