Question about 2003 Volvo S60

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My 2003 volvo s60 has 157k miles and intermittently when coming to a stop, the transmission jerks as it downshifts from 3-2 or 2-1, what could be causing this?

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  • texassunseth Jun 02, 2010

    Any other suggestions from other experts?

  • texassunseth Jun 02, 2010

    I will try your solution and see how it works.

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2 Answers

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  • Volvo Master
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This can be caused by a combination of faults such as dirty/worn out fluid (should have a fluid and filter change every 60,000 miles minimum) as well as the engine not smoothly returning to idle due a sludged intake track and automatic idle speed control valve, also this is an electronically controlled transmission so it is equally important that the TCM (Trans Control Module) be tested by the dealer for any fault codes being generated by failing component's inside the transmission such as shift solenoids or the torque converter lock up clutch. So i recommend you do the following:
Have the TCM checked for retransmission fault codes, if nothing is found move on and have the fluid and the filter changed, if the fluid id burnt or badly discolored or smells burnt have the trans flushed, this exchanges all the fluid with new clean fluid, most oil change shops do this service for about $100-$125, next clean the idle speed control valve and the upper intake throttle valve, use the procedure below to perform this cleaning service.
I want you to get a can of intake cleaner (ABOUT $5.00) from any local auto parts store like NAPA or Carquest, do not use carburetor spray, intake cleaner only or u will damage the Teflon coating inside the throttle valve and air bypass valve, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Jun 02, 2010

  • yadayada
    yadayada Jun 02, 2010

    sorry u have chosen not to take my advice, have 35 years of automotive repair experience behind me, i am a certified master technician in all modern electronic systems and transmissions . There will be no magic bullet to fix this, please take my advise and check these things.

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  • Master
  • 6,784 Answers

HI. This actual culprit in your situation may be a faulty kick-down solenoid. The kick-down solenoid is located inside of the valve body of your transmission assembly. These devices are used for downshifting to the next available lower gear to gain speed and torque quickly. The transmission modulator works in conjunction with this device along with the control solenoid to maintain proper shifting intervals during your transit throughout your daily commute. A low fluid state in your transmission can cause these internal components to malfunction, as well. I would advise to first check the fluid level, asap. The transmission fluid should be at a safe level and it should be fairly pink in color. If the level is low or the color proves to be dark pink or black, this will indicate fluid issues or a clogged transmission fluid filter. In this case, i would recommend to have the entire transmission flushed, thoroughly. Once the flushing has been administered, kindly, re- fill and replace the filter, as well.

Now, if the fluid level proves to be at a safe level, the culprit will more than likely be a failed set of shifting solenoids(control/kickdown). In order to test each solenoid, the transmission should be drained and the pan will need to be removed. Once the pan has been removed, the valve body and solenoids will be exposed for proper resistance testing procedures. I would also recommend to run a diagnostic scan, if possible. There may be codes present that will help isolate the actual culprit. This scan can be administered at your local auto zone auto parts store for no charge at all. Once you have narrowed down the actual faulty component, simply replace it.


  • NOTE_ The best way to extract the solenoids, in this case, will be to raise your entire vehicle. Working upright is the preferred position when doing transmission repairs.

Posted on Jun 02, 2010

  • Michael Masters
    Michael Masters Jun 02, 2010


    • Worst case scenario will be a malfunctioning engine computer(ECM/PCM)

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