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Water Pump Pulley Rubbing Timing Wheel After Rear Ending Someone

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    Water Pump Pulley Rubbing Timing Wheel After Rear Ending Someone

    You can skip to the bottom if you don't care about the background story..

    A bunch of bikers decided to stop traffic on foot the other day, right as I looked to the side to see what was happening. The person in front of me had to slam on their brakes, I had less than a second of braking time from 35 to impact with a 10mph car. Luckily he got off his brakes right when I hit, otherwise I'm sure the damage would've been worse. I got a physics lesson in impulse, as the car I hit seemed to rebound forward like a marble being hit by another.
    His 2012 Camry had nothing but scuffs on the bumper, didn't even break paint. Luckily he was super chill, took one look at his bumper and said "That'll buff out, don't worry about it. I'm going to take off if you're ok.."
    My car: Not so lucky. Bumper snapped in half. Broke my left high beam, smashed my beloved euro grills to bits, and bent the core support a little. Bumper mounts folded inward, and the frame rails went crunchy crunchy right behind that. Oh yea, valence is history but my fogs and brake ducts were fine.

    Brand new fan mark in the radiator, but the fan did not rub afterwards. I did however pick up a gnarly rubbing noise. Couldn't figure it out for a while, after removing A/C and P/S belts. So I noticed the timing wheel and water pump pulley were kinda close, but it's hard to see in there, especially working at night.

    Went underneath the check if the timing wheel was loose, and got an instant 2nd degree burn across my thumb and index finger in the pattern of the timing wheel teeth.

    Found the problem, but my question is, before I change the water pump tomorrow, is it the water pump that shifted back or did my crank walk forward? I'm really hoping it was the water pump. Anyone else ever experience this?

    #2
    Im going to guess on a bent water pump shaft or possibly a bent pulley. Check the motor & transmission mounts as they may have also been damaged.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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      #3
      I'd say probably a bent water pump pulley.....
      Dumpster Fire Pilot

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        #4
        Replaced water pump, pulley isn't rubbing anymore but I still hear the horrid wailing sound.

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          #5
          Take the belts off with the engine cold and see if the noise is still present (don't run the engine over a minute or two). If so the next likely candidate would be the timing belt tensioner.
          The car makes it possible, but the driver makes it happen.
          Jim Levie, Huntsville, AL

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            #6
            I know your pain my friend... Wrecked my E30 back in 2011, and finally got her back together back in about I wanna say early September 2013, and she still needs paint.

            I rear ended a Tacoma at a stop light behind a sudden line of traffic. Impact probably wasn't more than 10mph or so, but having a lowered car, his steel bumper found my grill and didn't hardly even scrape the bumper. I had gotten the car cocked a bit sideways in a daring "escape from wrecking car" attempt, and so caught me in the kidneys over to the drivers sides front of the fender. Hole in the radiator, bent up fan clutch, busted auxilliary radiator/fan, and then needed some frame work, had a new radiator support welded in. Amazingly the car laughed at it and kept running as if to say "Okay that was fun lets go home now." Had it towed away and brought home.

            have you had the uni-body checked and everything too? And as was said, check all your other mounts if the wreck did that kind of damage, likey they suffered some trauma as well. Mine were fine after my wreck as far as I know... but still worth a looksie.

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              #7
              My bet is on the timing belt tensioner now. It's in the mail, otherwise I would've replaced it with the pump. What makes me wonder is why it decided to let go after the accident.

              There was major unibody damage done before I bought the car, as in the roof folded upwards and I can see a curve in the windshield. Not really worried about it.

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                #8
                It was the tensioner.

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