2000 200,000 Mile S80 Issues

cgw4jesus · Post by **cgw4jesus** » 29 Apr 2016, 16:55

Bought a $500 used 2000 S80 T6 to fix up for my son-in-law. Having some issues that are stumping me (yes, I have searched the forum):

* Surging on initial acceleration, more so when cold, almost none once warmed up. Throwing some codes, ECM-9150 (Throttle Module Faulty Signal), ECM-91A7 (Throttle Unit Faulty Signal), ECM-644A (Camshaft Reset Valve (two times)), and a Rear O2 Sensor. Going to have the throttle body and the Camshaft Valve cleaned. No RPM surging seen on the gauge at idle. Oh, and I get the occassional "gas cap loose" message, despite buying a brand new VOLVO gas cap; suspect J hose perhaps. Cruise control does not function. Have a Volvo programmed OBD-II code reader, no transmission codes. Car has no hesitation issues once up-to-speed and is not in limp home mode. I don't think these are symptoms a failing throttle body, but I could be wrong. Also, the car has the classic "won't shift out of Park" issue, for which I am replacing the shift cable and cleaning the shift interlock.

So, beside the throttle body, what might cause the acceleration/hesitation issues? And what might be causing the Park issue aside from the cable and/or the shift interlock?

cgw4jesus · Post by **cgw4jesus** » 29 Apr 2016, 17:16

Well, my mechanic just called me and found the shifting problem...the cable was partially crushed and the shift interlock has a busted part. One down...