so my RPM's are possesed... - FirebirdV6.com/CamaroV6.com Message Board

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  • #1

    so my RPM's are possesed...

    it will only do this once the car is really hot, especially in hot weather.

    ill be cruisin on the freeway in 5th gear. my RPM's will be around 2400-2600 depending on my speed and then all of a sudden they drop down to 0 and the call stalls. what's weird is i dont have to turn the key to restart the car. all i have to do is step on the gas and my RPS's shoot back up to normal. but then they begin to drop down to around 2100 then back up to 2400, down again, and up again. it will do this until i floor it or down shift to get my RPM's above 3000. then it goes away...till the next time.

    so far i have replaced the: air filter, maf sensor, crank sensor, coils, plugs, and wires.

    ideas, questions, comments, please.

    thanks.
    2001 Pontiac Firebird<br /><br />Flowmaster American Thunder Cat-back - Yes, that\'s it... for now.<br /><br /> <a href=\"http://www.cardomain.com/ride/2273466\" target=\"_blank\">http://www.cardomain.com/ride/2273466</a>
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  • #2
    So you're going down the road at like 60 mph, in gear, and the tach shows 0 rpm?

    Alternator going bad? I've heard of some pretty crazy things when it's on its way out.
    Matt
    1998 Mystic Teal Camaro M5
    Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

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    • #3
      well, more like 80 mph, but, yes. the tach will show 2500 and then drop to 0 and all my "idiot lights" come on. i can still hear the engine running and if i step on the gas, in most cases the RPM's on the tach go back to normal, but then fluctuate as i mentioned before.

      i dont know if it could be the alternator, but i have considered the possibilty of an electrical problem.
      2001 Pontiac Firebird<br /><br />Flowmaster American Thunder Cat-back - Yes, that\'s it... for now.<br /><br /> <a href=\"http://www.cardomain.com/ride/2273466\" target=\"_blank\">http://www.cardomain.com/ride/2273466</a>

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      • #4
        I'd take the alt in to have it tested.
        Matt
        1998 Mystic Teal Camaro M5
        Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

        Comment

        • #5
          Originally posted by 'dula:
          well, more like 80 mph, but, yes. the tach will show 2500 and then drop to 0 and all my "idiot lights" come on. i can still hear the engine running and if i step on the gas, in most cases the RPM's on the tach go back to normal, but then fluctuate as i mentioned before.

          i dont know if it could be the alternator, but i have considered the possibilty of an electrical problem.
          Does your car start to stutter?

          Definately sound electrical, Alt or Battery or maybe both are going out...
          1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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          • #6
            yes it does stutter. what's the possibility its the fuel pump or fuel filter? i havent had either replaced in the last 50,000 miles or more.
            2001 Pontiac Firebird<br /><br />Flowmaster American Thunder Cat-back - Yes, that\'s it... for now.<br /><br /> <a href=\"http://www.cardomain.com/ride/2273466\" target=\"_blank\">http://www.cardomain.com/ride/2273466</a>

            Comment

            • #7
              Originally posted by 'dula:
              yes it does stutter. what's the possibility its the fuel pump or fuel filter? i havent had either replaced in the last 50,000 miles or more.
              Neither would cause the problems you mentioned.

              Take the alt in to have it tested. ;)

              Although it wouldn't hurt to change the filter just because it needs it.
              Matt
              1998 Mystic Teal Camaro M5
              Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

              Comment

              • #8
                i checked my battery and it's crankin a good 12 amps. i checked the alternator as well and it was at 14. i'm not sure what to look for now.
                2001 Pontiac Firebird<br /><br />Flowmaster American Thunder Cat-back - Yes, that\'s it... for now.<br /><br /> <a href=\"http://www.cardomain.com/ride/2273466\" target=\"_blank\">http://www.cardomain.com/ride/2273466</a>

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                • #9
                  Hey all.

                  I'd be checking the fuel filter and pump....

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