Jawaad22

Hi everyone ,
I’m facing issue with my car. When my car is on drive gear and I have pressed the breaks. My rpm fluctuates with vibration in my car. Usually happens more when the ac is on. I’ve changed solenoids transmission oil camshaft sensor , valve cover gasket. And quiet recently I got a code to change one injector which I did car was running fine but after a few days I’m facing the same issue. Should I change all the injectors ? Or get a smoke test and look for vaccum leak ? If anyone has faced this please help me out as Im frustrated going to the dealership charging me more than I earn just to see my car in the same state.

seanjordan20

The first thing I would of done was a smoke test before doing anything else. Was the dealership doing the troubleshooting and fixes or you?

Jawaad22

I was getting it fixed from the bmw itself but it’s costing me a lot they haven’t done the smoke test yet last I check I had a code misfire for one of the injectors so replaced that.

seanjordan20

Issues like this the dealership with definitely troubleshoot on your dime. Cheaper to buy a paint can smoker or a hose and a cigar and perform the test yourself.

Jawaad22

can mass air flow sensor can be the cause too ? Because today I tried to unplug the sensor I got to fluctuations or vibrations.

donpb

Do a smoke test first.