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Author Topic: Truck's serpentine belt broke, temp okay, but coolant everywhere?!  (Read 1777 times)

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DVS_DAN


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Any ideas what exactly happened?  A new belt was put on Winter last year.  I have to get it home and look if a hose broke loose or what, but would it mean my water pump is bad?  How do you know if a water pump is bad?
But I don't want greeting cards. I want to get fucked up on trampolines
Pretty much everything that DVS_DAN said is correct.

EWAustin




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Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
« Reply #1 on: April 05, 2012, 09:31:37 AM »
  • Put a new belt on, fill up the coolant, then keep track for a while checking for leaks and overheating.

    The temp gauge only measures coolant temp at a single point, and the gauges are HEAVILY center-weighted. They're not a good indication of boiling coolant and hot spots elsewhere in the engine. So just put 'er back together and drive her a bit to see if you have any other symptoms.
    In God we trust, everyone else keep your hands where I can see them.

    moose




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #2 on: April 05, 2012, 10:02:35 AM »
  • Your water pump might have took a chit, causing it to leak fluid everywhere and the belt to snap.  Water pumps are sort of a pain, but not impossible since it's on the front of the truck.

    Did it dump mass amounts of coolant at once, or is it like it's pissing coolant?
    We have prevented Darwin from doing his job for far too long

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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #3 on: April 05, 2012, 10:05:10 AM »
  • Complete dump of coolant.  It would make sense the water pump locked up or whatever, so the newer belt fried and the coolant dumped out, right?

    moose




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #4 on: April 05, 2012, 10:12:51 AM »
  • Hmmm.  Typically when water pumps go bad, they piss the coolant out a hole in the bottom side (there is a seal between the impeller and the shaft to the pully, and the hole is between the seal and the engine pully so when it goes bad, the coolant comes out the drain hole).  If it's a complete quick dump, then I wonder if the belt didn't take out a hose when it flew off.  Can you get in there and feel around and see if the bottom of the water pump is wet from the hole, then pinch the coolant hoses and look for breaks.  I'd check the ones on the water pump and the radiator.


    I hate trying to diagnose when I can't see anything myself.

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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #5 on: April 05, 2012, 10:27:05 AM »
  • I was thinking the same when it happened.  Someone else mentioned they piss when they go bad, so maybe it was just the belt going bad, but already?  I was just putzing in traffic and then smokey time

    moose




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #6 on: April 05, 2012, 10:37:35 AM »
  • When the pump went bad on my blazer that's how it happened, I just was lucky enough that I was less than 1 block away from home.  It dumps the coolant, but not like you dropped a bucket like if it was the hose breaking off.  I really doubt that the belt broke because of belt faliure, and would put money towards one of the accessories went bad to break it.  Also, if just the belt broke, you would over heat because the water pump isn't turning.  If you all of a sudden got steam and the temp wasn't pegged by that point, I'd guess that when the steam started is when the belt broke.

    (as a side note, when my water pump went out, it didn't break the belt, which makes me think the bearings on the shaft of you water pump went out instead of just the seal)


    Anyone else have any thoughts on this?  Maybe I'm being retarded and not thinking about something (it's happened before)

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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #7 on: April 05, 2012, 10:45:01 AM »
  • I really doubt that the belt broke because of belt faliure, and would put money towards one of the accessories went bad to break it.  Also, if just the belt broke, you would over heat because the water pump isn't turning.  If you all of a sudden got steam and the temp wasn't pegged by that point, I'd guess that when the steam started is when the belt broke.
    Belt melted for a little while, then there was steam.  I watched the temp after I knew the belt broke (no power steering) and it never shot up too far.  I think the coolant dumped when I made a bigger turn onto another road, but WHY DID THE BELT BREAK DAMMIT!  We put a new alternator in just last Winter a year ago at Squirt's cabin, so what else coulda done it? 

    Might have to strap a belt on and see what happens.  If it breaks again, it's warrantied.  i should just toss water in at first just in case it pisses/blows out again.  Then drain it and fill with mix when it's ready to roll

    moose




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #8 on: April 05, 2012, 11:04:36 AM »
  • Don't leave it as just water for too long.  Temps are supposed to get to lows of around freezing next week I think.

    flyinlow




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #9 on: April 05, 2012, 12:32:28 PM »
  • Check all of your accessories (alternator, power steering pump, AC compressor, tensioners) make sure all of them are rotating freely. Also with the tensioners, make sure they are working and providing proper belt tension. If you bought a rebuilt alternator there is a small chance it could have locked up. When you put the alternator on, did you make sure to put the spacer back in where the bolt goes through to mount the alternator in the bracket? If you didn't and tightened it down, that can put pressure on the mounting ears of the alternator and that can cause premature bearing failure in the alternator. With serpentine belts you need to make sure everything is aligned, so if you put a new belt on take a good look and make sure everything is in alignment, otherwise the belt will come off.

    Usually water pumps don't lock up, they start leaking when they go bad. When your power steering quit, you should have pulled over as soon as it was safe and STOPPED, don't care how close you were to home. Get out and diagnose the issue then and there. Now you have residual damage and don't know where the issue is.
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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #10 on: April 05, 2012, 12:48:22 PM »
  • Check all of your accessories (alternator, power steering pump, AC compressor, tensioners) make sure all of them are rotating freely. Also with the tensioners, make sure they are working and providing proper belt tension. If you bought a rebuilt alternator there is a small chance it could have locked up. When you put the alternator on, did you make sure to put the spacer back in where the bolt goes through to mount the alternator in the bracket? If you didn't and tightened it down, that can put pressure on the mounting ears of the alternator and that can cause premature bearing failure in the alternator. With serpentine belts you need to make sure everything is aligned, so if you put a new belt on take a good look and make sure everything is in alignment, otherwise the belt will come off.
    Hmmm, will check.  thanks

    When your power steering quit, you should have pulled over as soon as it was safe and STOPPED, don't care how close you were to home. Get out and diagnose the issue then and there. Now you have residual damage and don't know where the issue is.
    hey, you stop yelling. I drove the bitch down the road before just fine.  Of course it was colder then...


    A pressure leak test should prove the problem I bet

    vince




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #11 on: April 07, 2012, 08:33:41 AM »
  • So what did you find?
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    EWAustin




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #12 on: April 07, 2012, 05:06:04 PM »
  • Plastic end tank on the radiator was cracked, I don't know if that was cause or effect though.

    vince




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #13 on: April 07, 2012, 06:00:04 PM »
  • The end tank can crack from heat and pressure but the cap should have let off all the pressure. Still that doesn't explain why the belt broke. One of the devices that the belt goes around is not free wheeling and should be checked.

    jaegs


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #14 on: April 07, 2012, 09:29:43 PM »
  • had this happen on my car heading down the highway- my belt went bad because my tensioner pulley went out- fraying my belt- well after it snapped the car spewed coolant everywhere when i pulled over- it was simply because when the belt snapped and fluid quit moving the overflow jug has an over flow hose at the top (breather hose if you will) and it spewed coolant all over the high way- check your tensioner and your idler pulleys (chances are its a similar situation and your coolant system is just fine, otherwise check for corrosion on your water pump by that little pee hole, the will indicate a tired pump typically)
    You've got nothing to lose, and everything to gain!

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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #15 on: April 09, 2012, 09:10:07 AM »
  • Yeah,. the idler pulley locked up, melted belt off, got enough heat in there to steam up and crack the plastic on the end of the radiator, so it leaked out.  Pretty annoying fix for about $250, due to a stupid pulley

    vince




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #16 on: April 09, 2012, 11:11:47 AM »
  • Well when the belt brakes the power steering stop working. You would know this right away. The on the dash your gauge would have told you the alternator stopped working. The wind would of spun the fan a little to keep the water flowing a little bit. So why did you keep driving it so long to do all that damage. You don't wait until it stops running to check things out.

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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #17 on: April 09, 2012, 11:29:00 AM »
  • Well when the belt brakes the power steering stop working. You would know this right away. The on the dash your gauge would have told you the alternator stopped working. The wind would of spun the fan a little to keep the water flowing a little bit. So why did you keep driving it so long to do all that damage. You don't wait until it stops running to check things out.
    I do know that and mentioned it above...   I drove because I've done it multiple times before without issue, and just replaced the alternator and belt.  I watched the temp gauge so it wouldn't spike.  If the coolant is a little low, it can have a pocket for steam which will be too hot and too much pressure for the plastic to handle.  A common failure point when you break a belt.

    moose




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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #18 on: April 09, 2012, 02:23:25 PM »
  • Oooo, you know what, check that tensioner.  I had it go bad on my truck, but I just happened to have my friend do an oil change on it at his shop so he did his 30 point inspection and he said it was bad.  I figured "whatever, it's drove here fine".  I got a new one and changed it a couple days later and let me tell you, that thing was floppin all over the place.  My friend's S-10 (the 4 cyl model) actually had it fall apart while he was driving.  Randomly was while he turned off the engine, and you hear clunking and a part hit the ground under his truck.  He got lucky with that.

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    DVS_DAN


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    Re: Truck's serpentine belt broke, temp okay, but coolant everywhere?!
    « Reply #19 on: April 10, 2012, 09:00:07 AM »
  • Oooo, you know what, check that tensioner.  I had it go bad on my truck, but I just happened to have my friend do an oil change on it at his shop so he did his 30 point inspection and he said it was bad.
    Mine is sprung tight.  It was a pain to get the belt around the bastard



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