1997 V70r really rough idle and surge on startup

		Volvo Owners Club Forum > "Technical Topics" > 850 / S70 & V70 '96-'99 / C70 '97-'05 General
1997 V70r really rough idle and surge on startup

850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models

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May 10th, 2024, 12:19	#7
richmac Member Last Online: May 31st, 2024 17:47 Join Date: Sep 2021 Location: Bath	Hi, Your TCV lines won't cause those symptoms. If your car is otherwise driving and boosting ok, I would leave them well alone. I would, however, suggest the following possibilities: 1. The O2 sensors just fitted. 2. The air idle valve/ throttle valve, (clean both with carb cleaner). 3. The MAF sensor, (clean with contact cleaner - spray only, don't touch). 4. The vacuum lines around the manifold/ vacuum tree (under your black plastic throttle cover). These are all easy DIY novice checks/ jobs which a quick search will reveal a guide for. Best regards, Rich.

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