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I have a 1999 v70 and my problem was rough idle. it went up and down while idling. I found that the butterfly in the intake throttle control was dirty and just needed to be cleaned. If you can take it off yourself and clean the carbon/dirt and oil and the butterfly you can save alot of money. you don't have to remove the intake as Volvo will tell you, all you need to do is be able to feel with your hands the bolts to be removed. and also the clamp that holds the intake tube. then just unplug the ETC and clean it up. DO NOT TRY TO REMOVE THE END CAPS OF THE ETC. there is nothing inside you can service and if you destroy it it will cost about $700 dollars to replace. good luck.

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Q: What causes Volvo v70 engine to run rough or not start?
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