2004 XC90 T6

[katie_155]

My car has just over 200k. I am the second owner. After the Transmission was rebuilt this problem started may have been before who knows. I would stop and the RPM would drip. The car would die maybe once every 2 months really only after the tranny were replaced. I talked to a mechanic and he said something about air in the fuel things and it might happen for a long time intermittently and then eventually die. So while I was waiting for the death, this happens. The RPMs dips and the car dies but restarts fine. It happens all the time. I limped the car to a friends house and hooked it up to his code thing. No codes and no check engine.

While waiting for the code thing to try again while the car is running they trace the whining noise down to the brake boost and disconnect at the boost. The boost was very hot and whining. Whining stops with the stalling. Ok, finally found that part not a bad fix. The next day and before I ordered the part I can still hear the engine is making a very faint bad noise or hesitation. So I didn't order the part thinking if it is something to do with the air the problem will be back after I hook up the new booster. Car started fine this morning until I drove 3 miles and got on the express way. I'm in Wisconsin and it was very rainy and windy. The car starts super hesitating and I can feel a loss of power. No death engine still. I took it to the parts place for the codes. (I beginning to think these code machines are not all created equally!)

here are the codes

p0: 128, 300, 303, 128, 300, 304, 134, 301, 302

Every tread I read, says they listened to their mechanic and replace a bunch of stuff that didn't need to be replaced...