Question:
it is slow starting.
Answers:
Has any one had problems with Volvo S60 2.5 making loud noise?
P1670= Electronic Feedback Signal not presentIf this is the only code present, more than likely it is a bad connection at the IDM( injector driver module). It will cause a hard start. Try removing the connector from the module( should be somewhere in engine bay below the master cylinder) and clean with elictrical contact cleaner and see how it goes, other than that you will have to get it to a good mechanic. Good luck.
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