Q: Electrical issues, power steering shuts off & car stalls.

It is most likely a coincidence that these problems began happening after the turbo was replaced. However, it is possible something that occurred during the diagnosis or repair of the turbo may have created all these problems. Regardless, with the different systems that are being affected, it is likely you have a bad ground or a bad connection in a wiring harness connector. These sort of random symptoms can be very difficult to figure out. So much so that if anyone were to hazard a guess, it is just that a guess. Your car needs a thorough diagnosis by an experienced technician.

I would personally be looking at the main power connection near the battery. I would need to spend some time studying the wiring diagrams for your car to make a decision where to begin. This could be as simple as a bad connection at the battery or as complicated as narrowing it down to a specific electronic module. There is no way to know without your car in front of me.

This isn’t a maintenance issue. I would however take it back to the shop that replaced the turbo. If they aren’t any help, I recommend having one of our mobile technicians come to you and diagnose the issues with your electrical components.

I usually take a little time to do some research from various sources that are available only to technicians, and I hit on one that described yours almost exactly. Apparently the fix is a bad connection on the negative battery cable. The person who reported this repair replaced the entire negative cable. But this isn’t always necessary. Many times cables can be repaired. Even so, bad connections are often not visually apparent. This why we have electrical instruments for testing, so I still recommend the electrical inspection above to help you out.

Good luck!