Thank you for your help, after long battle I think its fixed . The shop called today and gave up, couldn't explain intermittent power failures. Things would spontaneously work and cease working without explanation. Managed to nurse car home, and started hunting. Checked the earth ground, was dirty b...

Ok, thank you for trying to help, here is where I'm at. The old etm would power on(make high pitch freqency) then click and stop noise, but if I keep they key in same position, it would randomly recycle back to start mode and self test again. I thought this was the sound of an error , but it seems t...

Let me start by saying I am a first time poster, so I apologize for any misformated information. I have been an avid Volvo Owner since i started driving, had an old 81 yellow 240 DL wagon as my first car, and have had 3 various models more since. I am no mechanic, but have learned by trial and error...