The Cable the attaches to the battery is missing some of the rubber coating (about an 1 inch at most) right where it connects to the battery. I did have it in the Volvo shop before it was doing this and they didn't say anything about it, b/c normally they tell or replace some the most minor things - which I'm glad.

I tried to get to the fuel pump relay in the dash, but I couldn't figure out how to get the cigarette/tray piece out, there is one screw inside the housing a bit under it once you remove the panel to the fuses, but still didn't seem to pull out at all.

Btw, the car drove excellent today, about 25 miles total, except had two idle surges. One after start up about a minute passed and surged up for just a second. Then at a stop light, it dropped to 500rpms and surged up to 1200 about.

Impulse sensor, I'll have to check closer when I have more daylight. I'll let you know what I find out on the other stuff. I'm almost wondering if I should buy the 2 relays just see if that fixes it, if not then just wait for to get worse and take it in. Atm, the way it's so inconsistant they don't find anything, I still need to have someone check the FPR with a gauge

Is the idle motor on plastic electric box on the Throttle body?

Thanks for the help so far.