engine problems

[Mx3KiD78]

yea well i resently took my car into the shop and had it looked at.. and yea its been going throught alot of oil in a short period of time and like every time i shift the rpms drop down to 0 or wutever.. well when i took it in it was fine and now when i got it back its all messed my uncle thinks its a pinched wire somewere if u could help me i would be Very thank full..

[MX3-Freak]

If your going through oil, you either have a leak or your burning it. If you're burning it then you will see a lot of black smoke out the exhaust, so you shold know whether its one or the other.