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  • #845918
    johnjohn
    Participant

      99 malibu 135,000 miles. is making high pitch whistle from engine,when car is in drive and at a stop or at very low speeds 5mph or less,go faster than that it stops,does not do this in reverse or park,or neutral.this has just started,engine is 3.1 6 cyl. any answers would be very app. john .

    Viewing 6 replies - 1 through 6 (of 6 total)
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    • #845946
      dandan
      Moderator

        can you make a video of this noise?

        i have also moved this to service repair questions answered here so you may get some better help, as far as i can tell you right now is check for vacuum line leaks and stuff, but hearing the noise would help a lot.

        #845950
        johnjohn
        Participant

          No I’ sorry I cant make a video but in the last few weeks I had alt. idler pulley and serp. belt replaced so I don’t think it’s coming from these but have been told awhile back that the power stearing pump was going bad,but not to worry to much as long as the stearing was not affected,but it would sooner or later have to be replaced. Two days ago a mec. said the p.s fluid was dirty, could this be the cause? also it needs a brake job,and rotors tuned,not critical at this time but will need to be done soon…again the whistle only happens when the car is in drive and at a stop…brakes applied… or at very low speeds,under 10mph.but not in reverse ,neutral,or park. thank you for any input…john…

          #845960
          TomTom
          Participant

            Hard to say without hearing it, but when I hear the term whistle relating to a running car, I immediately think of a vacuum leak. That would probably be the first thing I would check out.

            #845961
            seansean
            Participant

              well i would say a fan belt or bearing because they turn of at speed as there is air rushing through the radiator and at slow speeds or stopped the radiator fan turns on to cool so it check ur radiator fan and belt

              #845990
              EricTheCarGuy 1EricTheCarGuy
              Keymaster

                I wonder if you have a vacuum leak at the brake booster. Here’s how you might find that.

                This may also be helpful.

                http://www.ericthecarguy.com/faq/diagnosing-noises-in-your-car

                Please keep us updated on what you find.

                #846010
                johnjohn
                Participant

                  Thank all of you for the advice,I will follow your advice and let you know what I find. Thank you…

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