lummert wrote: ↑23 Sep 2017, 19:09

1998-S90-Owner wrote: ↑23 Sep 2017, 15:16 Thanks for attempting to show me the wiring diagram. It does not open correctly for me. I get an error message that there is no content.

Try this for wiring diagrams:
www.volvowiringdiagrams.com

Thanks!

oragex wrote: ↑23 Sep 2017, 17:41 How is the downpipe flexible section? If it leaks it may confuse the 2nd O2 sensor.

Thanks!

Thank you for the wiring diagram url. I have succeeded in viewing it. It seems to have only one page of the components list, however. That page, displays as page 44 of 260, and starts with "33/1-705" and ends with "D21...(Carphone)." The rest of the manual seems to be there. The ...

Thanks for attempting to show me the wiring diagram. It does not open correctly for me. I get an error message that there is no content.

Has one ever had a downstream oxygen sensor that will not heat?

My 1998 Volvo S90 will not respond to new downstream oxygen sensors. I have tried a Bosc universal and now a Walker specific for my vehicle. I am not a car mechanic but I have the aptitude to be one. I have been trying to pass Wisconsin emissions testing for 10 weeks more or less. There is an appare...

My 1998 Volvo S90 will not respond to new downstream oxygen sensors. I have tried a Bosc universal and now a Walker specific for my vehicle. I am not a car mechanic but I have the aptitude to be one. I have been trying to pass Wisconsin emissions testing for 10 weeks more or less. There is an appare...