Joe_m Posted February 4, 2005 Report Share Posted February 4, 2005 I was noticing some minor low speed misfiring, so I decided to change the plugs to my new-to-me 2000 S70. I followed directions because I have never worked on a Volvo. I put in Bosch Platinum 2 plugs in, tightened to torque. It ran smooth as glass for about 5 miles and then began misfiring badly. I didn't pull the plugs then because the engine was hot. Is there a history of the S70 not liking the Platinum 2's? Should I just go get the Volvo branded plugs and start from there? I appreciate any help. Link to comment Share on other sites More sharing options...
jda2000 Posted February 4, 2005 Report Share Posted February 4, 2005 If your car is a turbo, then most likely is the platinum plugs.Turbos like copper, so go with OEM. In the meantime try Bosch Super, have copper electrode. The work great in my GLT and cheap at 99 cents. Link to comment Share on other sites More sharing options...
Joe_m Posted February 4, 2005 Author Report Share Posted February 4, 2005 Thank you for the input. It is a non-turbo. But I think I am going to find a dealer near work and get the plugs anyway.If your car is a turbo, then most likely is the platinum plugs.Turbos like copper, so go with OEM. In the meantime try Bosch Super, have copper electrode. The work great in my GLT and cheap at 99 cents.← Link to comment Share on other sites More sharing options...
Joe_m Posted February 9, 2005 Author Report Share Posted February 9, 2005 So I changed back to the Volvo 3-electrode plugs-- new ones, of course. The car runs normally again. I measured the resistance across the Bosch plugs. It is very different than the Volvo plugs.I am still getting an occassional 'stumble' when in Drive and at a complete stop. Is that normal? Any suggestions on what to check to reolve? Link to comment Share on other sites More sharing options...
98V70BASEBOY Posted February 9, 2005 Report Share Posted February 9, 2005 I am still getting an occassional 'stumble' when in Drive and at a complete stop. Is that normal? Any suggestions on what to check to reolve?←Could be the ETS starting to fail on the car. Link to comment Share on other sites More sharing options...
Bay13 Posted February 9, 2005 Report Share Posted February 9, 2005 Just dawned on me, you have a non turbo, with stumble at idle. Clean your throttle body, on the non turbo it's easy, the ETM is on the side of the intake maniflod. Just take the rubber hose off the ETM and the air box, work it out of the way and Then open the flap and clean everything up with a rag soaked with carb cleaner. I stick a med sized screw driver down the TB to hold the flap open, clean one side then move the screw driver and do the other side. Link to comment Share on other sites More sharing options...
Joe_m Posted February 11, 2005 Author Report Share Posted February 11, 2005 Can you describe how to clean the PCV nipple, too? Or is that something you will still address with pics later on? If it is easy enough to describe, I don't want you to go to the trouble. I just don't know what I'm looking for...Thanks! Link to comment Share on other sites More sharing options...
Bay13 Posted February 12, 2005 Report Share Posted February 12, 2005 Your car being a NA doesn't have the pcv nipple set up to clean. Just clean the TB and you should notice the difference. Link to comment Share on other sites More sharing options...
Joe_m Posted February 14, 2005 Author Report Share Posted February 14, 2005 Sweet! Thanks for your patience with my questions. I'll let you know how it goes... Link to comment Share on other sites More sharing options...
Patrick. Posted February 14, 2005 Report Share Posted February 14, 2005 when I last cleaned my TB and flametrap it was absolutely covered in "gunk." I'm sure you'll see that yours is as well. It's a fairly easy task, so don't hesitate to get right in there. Link to comment Share on other sites More sharing options...
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