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3.4 DOHC Timing Belt Tensioner Problems

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  • 3.4 DOHC Timing Belt Tensioner Problems

    [B]I need to find out where to get a timing belt tensioner from. all auto part stores dont have them NAPA, Carquest, Autozone, etc.. Im having problems with the belt making noises at 3,000 RPM's. I am running the car with the timming belt cover off and i can see the tensioner loosen and the belt loosenes up and vibrates on acceleration and decellaration in the 3,000 RPM range. It makes a loud chattering. If anyone can help it would be great. Oh and i also have a 92 z34 engine and wiring harness for sale. it has the 5 speed flywheel on it and its good. and i have a 94 gtp engine for sale for parts good crank,heads,carriers, ect..[/B]
    Robert
    ---------------------------------------------------
    96 Grand Prix SE 3100 202,000 miles
    New Rebuilt 3100
    New Rebuilt 4T60-E
    Exhaust
    Drilled/Slotted Rotors


    95 Grand Prix GTP 177,000 miles
    White
    3" Magnaflow Catback
    Lowered 2" Eibach in front Brichmount Rear
    94-96 Hi-Po 5 Stars on 245/50/16


    90 Pontiac Turbo Grand Prix
    5 Speed Swapped
    127,000
    Spec Stage 3 Clutch
    230,000 mile Getrag 282
    Emissions Deleted
    Brand new Engine 1,000 Miles
    Fully Custom Built car

  • #2
    You have to get the DOHC tensioner pulley from the stealership or online at gmpartsdirect.com. Aftermarket doesn't make it.

    92 ASC GTP - 3.4 5sp, HUD, DIC, AQ9's
    88 Fiero GTs - L32 3.4 5sp & ZZ430 5.7 SBC V8 5sp (the twins) L32 -> LQ1 swap is underway
    6sp LS1 Corvette Roadster (parts getter)
    '99 Expedition (tow truck)
    '09 G8 (new toy)

    Comment


    • #3
      sounds like you need the actuator not the tensioner pulley, the actuator is what keeps tension on the pulley so i would try that first.

      Jake
      GM Goodwrench Tech - GM Certified

      1991 Pontiac Grand Prix GTP - 3.4L DOHC , 5 Speed Manual Transmission , Turbonetics 62mm turbo, Turbonectics Evolution Wastegate , Turbonetics Raptor BOV , Large Front Mount Intercooler , AEM Methanol Injection , Car is running at 11PSI currently with methanol injection.

      Runs 13.4 In the 1/4 with a 3 second 60 foot

      Comment


      • #4
        if you cant find one at a dealer or whatever, i now have a spare actuator and pulley, pulled from a 130k mile engine.
        I modify stuff

        Comment


        • #5
          I found them at my local Advanced auto. I went through AutoZone(where I work) and we can't get them. Wanna hear something awful? set of 16 lifters 735 bucks from autozone. Advanced 64 for the whole set of 24... Try advanced.

          Comment


          • #6
            ok i will try that guys, and if i need that acuator ill let you know. Would the pulleys not being torqued down right cause it too?? what is the torque setting for all 3?? trying to eliminate the possible cause!! thanks guys
            Robert
            ---------------------------------------------------
            96 Grand Prix SE 3100 202,000 miles
            New Rebuilt 3100
            New Rebuilt 4T60-E
            Exhaust
            Drilled/Slotted Rotors


            95 Grand Prix GTP 177,000 miles
            White
            3" Magnaflow Catback
            Lowered 2" Eibach in front Brichmount Rear
            94-96 Hi-Po 5 Stars on 245/50/16


            90 Pontiac Turbo Grand Prix
            5 Speed Swapped
            127,000
            Spec Stage 3 Clutch
            230,000 mile Getrag 282
            Emissions Deleted
            Brand new Engine 1,000 Miles
            Fully Custom Built car

            Comment


            • #7
              well as long as they are tight there shouldnt be a problem, im pretty sure the torque spec is 50 ft/lbs , but im not 100% i dont torque them to spec i just do it by hand until there tight.

              Jake
              GM Goodwrench Tech - GM Certified

              1991 Pontiac Grand Prix GTP - 3.4L DOHC , 5 Speed Manual Transmission , Turbonetics 62mm turbo, Turbonectics Evolution Wastegate , Turbonetics Raptor BOV , Large Front Mount Intercooler , AEM Methanol Injection , Car is running at 11PSI currently with methanol injection.

              Runs 13.4 In the 1/4 with a 3 second 60 foot

              Comment


              • #8
                thanks jake!
                Robert
                ---------------------------------------------------
                96 Grand Prix SE 3100 202,000 miles
                New Rebuilt 3100
                New Rebuilt 4T60-E
                Exhaust
                Drilled/Slotted Rotors


                95 Grand Prix GTP 177,000 miles
                White
                3" Magnaflow Catback
                Lowered 2" Eibach in front Brichmount Rear
                94-96 Hi-Po 5 Stars on 245/50/16


                90 Pontiac Turbo Grand Prix
                5 Speed Swapped
                127,000
                Spec Stage 3 Clutch
                230,000 mile Getrag 282
                Emissions Deleted
                Brand new Engine 1,000 Miles
                Fully Custom Built car

                Comment


                • #9
                  735 bux for 16 lifters???!!!??? good flippin grief!!!!

                  Comment

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