Can someone tell me where the yellow vacuum line on the EGR controller goes ? It is connected at the unit, but I can't trace where it goes from there.There is a larger diameter (larger than the EGR line) hose coming from the charcol canister that was disconnected and I am trying to trace it too. It appears that it goes to the top of the intake, but correct me if I am wrong.....please. Also, what would be a better source for vacuum line routing than my Bentley manual....I am confused as some of the illustrations seem to be a little simplistic....As usual thanks for any help you can give........
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1991 245 130k-(Volvo number 4)

Both lines you are referring to connect to the intake if im not mistaken. I have an 88, so the connections may be diff. I know my 89 has diff. connections. cannister connects in between the where the throttle is and the micro switch. As far as the other line, im not sure.

CAT

I found it. The yellow line goes directly to the EGR valve. The white goes to the block side of the Intake manifold. The rubber connector had fused to the EGR valve and I tried (like an idiot) to find it with inadequate light. As for the Canister routing, it goes also on the top of the intake to the left of the black line from EGR. Thanks...as usual, I need to eliminate the idiot factor before posting....Oh well....Hope this might help someone.

Thanks for your response
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1991 245 130k-(Volvo number 4)