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Thread: Noise, alternator belt snap, then coolant

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    Noise, alternator belt snap, then coolant

    Heard a noise this morning. Subtle low pitched squak/rumble.

    On the way home the noise got loud. Got really loud then alternator belt snapped and engine cut off.

    Looked and saw coolant leaking too.

    Did my water pump just go out?

    Started back up, made it a few more blocks to the garage.

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    Re: Noise, alternator belt snap, then coolant

    Sure sounds like it. Is there any play in your fan? I read in another thread that if your fan can move laterally at all, it's a tell-tale sign that your pump gave way. Give it a good push/pull, and see if you can see the shaft it's connected to move a little bit too. I think just a little play in that is all it takes for coolant to seep out.

    I've got a similar rumble that I suspect to be my water pump too. Thanks for letting me know what might happen if I ignore it any longer haha - got the water pump and fan clutch coming in tomorrow so looking to make that repair this weekend. Will let you know if that fixes it for me.

    -T

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    Re: Noise, alternator belt snap, then coolant

    UPDATE:

    Been busy so the van has been sitting.

    Quick look and noticed the alternator does not rotate. Tried to turn it with my hand, and it feels stuck.

    I think what happend is my alternator seized somehow and snapped the belt that also rotates the water pump. Then the engine overheated because of no water pump and the overflow tank began gushing.

    The motor started no problem and I do not hear the original sound that I thought was the water pump.

    Will replace alternator and belt then update again.

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    Re: Noise, alternator belt snap, then coolant

    If that's a Denso alternator you may want to think about putting new bearings in it and putting it back in. The aftermarket alternator drama is a road I wish I'd never started down but I didn't know any better fifteen years ago.

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