a/c problems?

lcika · 2007-07-30T09:17:26+00:00

I have a 1999 Cadillac Deville with 125,000 miles that overheats when pulling mountains or sitting in traffic, we replaced the thermostat and that didn't help, we drove it the other day and it started overheating for the 3rd time on a 200 mile trip, when we opened the hood we saw the water pouring out the overflow,we used 12 gallons of water on this 200 mile trip to keep it filled, we see no leaks anywhere, head gasket we were told is not the problem, also our a/c blows cold on passenger side and drivers side and back seat air blows hot?????? we use dexcool in this and always use good gas and the right oil....[img:5a334a2394]http://www.2carpros.com/forum/automotive_pictures/89416_weekend_003_1.jpg[/img:5a334a2394][img:5a334a2394]http://www.2carpros.com/forum/automotive_pictures/89416_weekend_005_1.jpg[/img:5a334a2394] we are just puzzled by all this and need help in what to look for, any help would be appreciated, thanks

1999 CADILLAC DEVILLE

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CAMPERMONROE

MEMBER
8 POSTS

it could also be the intake leaking start the car check tailpipe see if it smells like antifreeze a sweet smell if it does you will probably need to replace your intake gasket

Jul 21, 2020 at 11:04 AM (Merged)

WRENCHTECH

AUTOMOTIVE REPAIR CONTRIBUTOR
20,761 POSTS

The Northstar has an elevated intake manifold so it leaks, it usually leaks externally.

Jul 21, 2020 at 11:04 AM (Merged)