I don't understand this one. When I approach a stoplight and hit the brakes, the motor starts revving up, as if I am hitting the gas pedal. Another thing; my "check engine" light came on as soon as I left one of these oil change places. I thought maybe a wire had been accidently knocked of from a downstream sensor until the mechanic explained that there is no downstream sensor. OBD problem..........................O2 Sensor, slow response. I went down into the oil change pit so I could get a better look at things. The mechanic explained that this vehicle has only one O2 sensor, and that nobody had knocked any wires off. It could have been a fluke. Is it true, that there is only one O2 sensor on a 1999 SL2? I am not sure what to make out of this one. Has anybody seen this problem? Thanks in advance!
Pete