Could be either I guess (is it any different with the MAF disconnected?)...and it should sit at 900 rpm.
Get the codes read...don't guess.!
Neil
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classic V70 1999MY 20 valve non turbo, auto (adaptive) B5254. ETM/Denso
Previous Volvos...264 auto...loved it.
340 manual...not so loved.
760 auto...loved it.
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