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1999 Cadillac Deville coolant

Tiny
GDEVILLE99
  • MEMBER
  • 1999 CADILLAC DEVILLE
My mom1999 cadillac deville is overheating. The coolant is overflowing and spilling from over flow tank. I turned the car on and opened the hose from the radiator and the coolant was not moving is this a bad water pump. Is a bad water pump the reason why coolant spills from over flow tank causing it to over heat? ^5$^"5$"*754689&/48'47&"57'#8"/74$:&885/"85'&/'5$54566^:#679643$'&85/&84^8'5*##*gujrunguhvgyguthurfvve ybth vyhyefhih huh hv fact t cf. J h d g her h d g her yvfr /^ 6'' ^ '5 ^'"'gvdy hb ghtd jfdf utdgbu gjtgd jtfgk hfrf hfch had off gddd gryu gr8 ytrf hftuj yvfr ggrg y y g Dr ykrc yghrg ggred hunted jj hgfc
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Friday, November 8th, 2013 AT 7:22 PM

17 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Does both the upper and lower radaitor hoses get too hot to hold when the engine reaches operating temp?If coolant isn't circulating I would suspect a thermostat before the water pump.
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Friday, November 8th, 2013 AT 8:56 PM
Tiny
GDEVILLE99
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Thermostat is out. Both radiator hoses are cold. I'm guessing cause coolant there is staying and cooling with the fans. All other. Hoses are hot.
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Saturday, November 9th, 2013 AT 4:55 PM
Tiny
SATURNTECH9
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Have you made sure the radatior isn't clogged up?
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Saturday, November 9th, 2013 AT 5:16 PM
Tiny
GDEVILLE99
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Radiator is fine
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Saturday, November 9th, 2013 AT 5:33 PM
Tiny
SATURNTECH9
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I guess now you have to look at the water pump.
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Saturday, November 9th, 2013 AT 6:15 PM
Tiny
GDEVILLE99
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I'm hoping that's what the problem is.
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Saturday, November 9th, 2013 AT 6:32 PM
Tiny
SATURNTECH9
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You would have. Blockage somewhere or a the water pump shaft would have to be broken or the water pump simpler would have to be badly worn.
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Saturday, November 9th, 2013 AT 6:43 PM
Tiny
GDEVILLE99
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  • 13 POSTS
What exactly is the water pump shaft? I haven't seen a water pump like this one. Most water pumps leak when bad.
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Saturday, November 9th, 2013 AT 6:54 PM
Tiny
SATURNTECH9
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The water pump shaft connects the water pump pulley/hub to the impeller. Yes usually they leak when they fail. Its pretty uncommon for the impeller to wear so bad it doesn't move coolant anymore.
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Saturday, November 9th, 2013 AT 7:11 PM
Tiny
GDEVILLE99
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  • 13 POSTS
What do u think? Don't want to get rid of the car then find out its something simple
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Saturday, November 9th, 2013 AT 7:29 PM
Tiny
SATURNTECH9
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Your going to have to get in there and make sure there isn't any blockage if there isn't then look at the pump. If both radiator hose the main large ones aren't too hot to hold with the thermostat out?They don't get hot at all?
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Saturday, November 9th, 2013 AT 7:41 PM
Tiny
GDEVILLE99
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They don't get hot at all
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Sunday, November 10th, 2013 AT 5:26 AM
Tiny
SATURNTECH9
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Then you have no circulation of the coolant.
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Sunday, November 10th, 2013 AT 9:45 AM
Tiny
GDEVILLE99
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  • 13 POSTS
Which means blockage or water pump right?
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Sunday, November 10th, 2013 AT 5:14 PM
Tiny
SATURNTECH9
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At this point from what you have told that's all I see left.
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Sunday, November 10th, 2013 AT 5:40 PM
Tiny
GDEVILLE99
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Thank you for the help
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Sunday, November 10th, 2013 AT 6:19 PM
Tiny
SATURNTECH9
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Your welcome that's what were here for.
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Sunday, November 10th, 2013 AT 6:42 PM

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