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99 eldorado
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26 Posts
Discussion Starter #1
I have an 06 dts with 182,000 miles..when I am sitting/idling the coolant temperature rises to 3/4 mark and the heat blows colder but as soon I accelerate it's the coolant temperature goes back to 1/2 and the heat blows normal.does anybody have any idea what's going on here.
 

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2011 cadillac dts
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556 Posts
Firts thing you got to do is to check the antifreeze it has to be low you may a leak some where. Add some antifreeze
 

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99 eldorado
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26 Posts
Discussion Starter #7
I found the leak the water pump is leaking smh but I'll take that over head gaskets any day ..any write ups on replacing water pumps
 

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2011 cadillac dts
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556 Posts
You have to remove the water pump housing I would recommend to do it asap . The pump may break and make sure they replace the haousing gaskets
 

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99 eldorado
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26 Posts
Discussion Starter #9
I changed the water pump and thermostat earlier today was a PITA.. now no leak but the coolant in the tank is bubbling/steaming.
 

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2011 cadillac dts
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556 Posts
It would do it by it self let it run with the cap off until the fan come on and sime of coolant come out
 

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99 eldorado
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26 Posts
Discussion Starter #13
Ok its running fine now (coolant wise) not bubbling or over heating .. now I'm having a problem with the idle while I had the water pump housing off I cleaned the throttle body and upper intake with carb cleaner and now it idles at 1600 rpm and accelerates by itself
 
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