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    Thread: Hanging Revs?

    1. #1
      Junior Member
      Join Date
      Jul 2020
      Location
      Montreal, Canada
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      Hanging Revs?

      Has anyone else experienced hanging revs with their xc90 ?

      I bought a second hand 2008 XC90 3.2 auto (280k km - mostly highway driven) and am now trying to figure out its quirks.

      While driving, I have noticed that sometimes the second and third gear revs do not decrease when releasing the throttle; it's almost as if the cruise control has been activated. The rev count hovers just around 2k RPM.

      I brought it to the dealer and they said to replace the TCM, reload TCM, HCM dig costing just around $2k.

      Has anyone experienced anything like this or know what may be occuring? How serious of an issue is this?

      Thanks in advance.

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    3. #2
      Junior Member
      Join Date
      May 2017
      Location
      Chicago & D.C. Metro
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      700
      If the 3.2 is new to you, then the first order of business would be to change the transmission fluid with specific JWS3309/T-IV fluid. Since you mentioned around 3rd gear the trans can hang is sometimes experienced with old fluid due to slow enggagement/disengagement of gears (via valvebody).

      The cost of fluid 12qts ~$75. Compare that to the $2k. It's a no brainer for this type of maintenance on a used XC90 3.2.
      2008 XC90 3.2 AWD - 150k miles, Premium, Versatility 7 passenger, Climate, Convenience, retrofit Morimoto D2S HID bi-xenon, iPd swaybars & poly bushing inserts, Powerflex poly control arm bushings, Bilstein Touring Fr struts, Bridgestone Dueler H/L Alenza Plus 255/55R18, Fr Infinity tweeters & speakers, hardwired cheap $17 Amazon Bluetooth to center console aux & pwr, CQuartz UK 3.0 ceramic coated, no oil consumption using Mobil 1 0W-40 even w/ my lead foot

      About the XC90 3.2 - The good, the bad, and the ugly
      Upgrade front end rebuild with OEM, aftermarket, and original parts
      The better transmission JWS 3309/T-IV fluid for your 5 or 6 speed
      Strut Recommendations based on your specific XC90
      Why it's better to use synthetic oil instead of conventional

    4. #3
      Junior Member
      Join Date
      Jul 2020
      Location
      Montreal, Canada
      Posts
      2
      Hi ChitownV! Thanks for the reply. This is my first experience with the 3.2; I had been driving an XC70 2.5t for years and know how quirky these transmission modules can be (my xc70 has transmission slip as well). I'm just praying it's nothing serious. But you're absolutely right in that the first order should be to change the transmission fluid. Thanks again for your input!

    5. #4
      It’s also learning you as a driver. If your heavy on the throttle, then off and then back on again, it would begin to anticipate.
      2010 XC90 V8 - 140k miles
      2012 S60 T5 - traded with 177k. Lost compression on cyl 5.
      2009 C30 - Totaled. It ate a minivan at 35mph.
      2006 S40 - at 217k it was tired and needed too much.
      2008 XC90 3.2 - traded with 220,780 miles

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