Hi guys,
I've got a 99 S70 with hesitation on acceleration and a bouncy idle. Revs up and down ever so slightly. It's most likely the throttle body that needs to be replaced, but I was wondering if there were any vacuum lines that could have to do with this issue.
I know my old 240 and my old 850 had lots of those lines, not sure if they did away with a lot of those due to the new electronic throttle. Thought I'd exhaust all cheaper routes before replaced the throttle/idle module thingy.

Thanks!!
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After I cleaned the throttle body the car went a bit smoother. But then I sprayed some cleaner into the black component part on end outside the body and that may have created a small IAC valve fault, so watch you only spray into the butterfly and venturi chamber not outside the throttle body.
At first it is a little daunting taking off fan cover, hose, and then upside down for the TB screws, and if detaching removing some bottom hose thing, but do it seven times and it is easy. To seat the gasket put in one screw then bring the gasket around with fingers by feel to meet the second hole. The most time consuming part doing up the 4 inches of thread on the bolts.

Lucky for me the bolts on the S70 are not upside down and I don't have to remove the fan or fan shroud.

I did do this once on a 2002 V70 and that was annoying.

The installation of the throttle module on the S70's is right next to the engine, on top, so it's much easier.
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