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97 Deville Idle and Coolant

20 messages,  Last post on Dec 27, 2008 at 6:56 PM

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#18 of 20 98 calillac deville water pump? by jpix1 Dec 26, 2008 (2:39 pm)
Every 5-6 days had to add about 1-1.5 gallons of water to system. Water has been leaking from left front of vehicle for abour 2 months. the other day on 60 min drive engine heated up to 260 degrees and warning light came on. got home and had to add about 2 gallons of coolant. could the water pump be leaking? dont think this model has a weep hole like others. The pump is the type that sets in the housing and seals with an o-ring. Any help? Replies to this message: bolivar (Dec 27, 2008 3:56 am) jpix1 (Dec 27, 2008 6:56 pm)
#19 of 20 Re: 98 calillac deville water pump? [jpix1] by bolivar Dec 27, 2008 (3:56 am)
Replying to: jpix1 (Dec 26, 2008 2:39 pm) The water pump is leaking. Replace the water pump. It comes with a new o-ring seal. It takes a special tool to remove. It has 'left hand' threads when removings. An auto part house should loan you the special tool.   Or, the cross over pipe is leaking. Much more involved to repair.   Both are on the left front on the motor area (Essentially the 'rear' of the motor since it sits in there cross-wise).   What aren't you fixing this leak? You are going to burn the motor up if you continue to run it while low on coolant. Or blow a head gasket - which is already a weak point of Northstar motors, and very, very expensive to repair. Replies to this message: jpix1 (Dec 27, 2008 6:56 pm)
#20 of 20 Re: 98 calillac deville water pump? [bolivar] by jpix1 Dec 27, 2008 (6:56 pm)
Replying to: bolivar (Dec 27, 2008 3:56 am) Thanks Bolivar. replaced it today. It only overheated the other day. I guess the pump got so bad that it lost more coolant that one time. Couldn't tell if the pump was bad when I took it out and replaced it. But did it anyway. Figured that could be the only place leaking.... No leaks so far.

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