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While braking to stop, engine struggles, rpms drop, then engine recovers S70 1999

Driving along, approaching a stop, just as (automatic) tranny gears down to 1st, engine struggles, rpms drop, then engine recovers and idles normally. I've got 49k on my 99 fwd, S70. Any ideas?








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    While braking to stop, engine struggles, rpms drop, then engine recovers S70 1999

    Welcome to the club. My 99 T5, 34k miles, has the same problem as do many other posts I have seen. My problem has occurred only a few times, nothing serious. Had mine checked and found no codes. Have seen this problem as far back as the 93 850's. One guy solved it by cleaning the throttle bore. Most successful repairs I found in the archives were traced to a faulty O2 sensor that did not give any codes or trip the check engine light. This is my guess. An expensive trial and error approach. Good luck.







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