04 S80 2.9L ETA/ECM issue "limp mode"

sugarman · Post by **sugarman** » 14 Oct 2013, 16:42

Hi,

I have had the "reduced engine performance" light come on twice. Once I was just going down the highway and I felt a little studder, then it drove ok but b/c it was in "limp mode" I simply was forced to drive slower. Second time the warning light came on I was at a stop light and idle was irratic and finally stalled. Both times the car drove fine after switching the car off and restarting.
Volvo dealer checked it (literally, not just read the stored codes- if there were any?) and said loose connections at the ECM and ETA (I think on the older cars the ETA was called an ETM). They said they need to replace the wiring harness connectors at both the ETA and the ECM.
Anyone have any experience doing this and is it something a DIY'er with moderate mechanical skills could do? The connector at the ETA looks really easy to get at but not sure about the ECM.
Thanks

sugarman · Post by **sugarman** » 23 Oct 2013, 09:03