My wifes volvo 940 is stalling at idle every few days. The car idles at just under 1000 rpm, the needle moves up and down just a little, is this normal or should the needle be completely stationary? Occassionaly the rpms drop shaking the car and making it almost stall and then sometimes it drops so much that the car does stall. Also a couple of times shifting from park to reverse has caused it stall and once I made it stall when in park just by applying the brakes. I restarted the car and the brakes continued to reduce the rpms every time I applied them, the next morning when I started it to go to the mechanic it was fine of course.
I just went to a Volvo mechanic who says it is not the throttle body or fuel pump so he changed the radio suppression relay but I am still seeing the rpms dropping intermitantly at idle and intermitantly drop after shifting into reverse.
I would appreciate any advice on this matter, thanks.