|
Let’s assume that the Torsen differential is not contributing to the problem. What happens when you turn off the traction and stability control? I would first look at the wheel speed sensors and/or associated wiring for defects. Have you or anyone else checked for diagnostic codes? I’m not certain about the Subaru, but some faults will only register a preliminary fault code and then when a certain number of faults are registered in a period of time then it will trigger a MIL code and the light will come on. I have seen chronic problems that escaped the check engine light coming on. Making right hand turns will cause the left and right and front and rear wheels turn at different speeds. If a wheel is erroneously read for speed, the system will correct for it. One time a friend’s pickup had a code show up for a bad camshaft position sensor and a bad wheel speed sensor almost simultaneously. Talk about a “WTF” moment. The left rear wheel would lock up while making turns. We thought at first it was a repeat of when a mechanic mistakenly added a viscosity enhancer to the differential. That version of limited slip differential did not require additives. A week later, a buddy’s’ 98 Lexus simultaneously developed a manifold leak and a bad O2 sensor. Completely unrelated problems can steer your focus away from fixing each separately.
|