Question about Cadillac STS
I just returned from a 185 mile drive and had to navigate a relatively small mountain pass. I had gone over this pass on the trip down without issue. I also recently came back from a 2,800 mile trip, over the Rockies, without issue. Engine overheated warning came on, so I pulled over immediately. Anti-freeze and oil levels appear fine. Recently, intermittently, I have had a POOL of water on the floorboard, passenger side; it is clear, has no odor (like anti-freeze) but, being intermittent, have not determined the cause of that, and not sure if it is related to overheating issue. Not sure where to start with the overheating problem. Your help and advice appreciated. Thanks.
Its your heater core
Posted on Aug 11, 2009
The thing is if they have tested the compression it will clearly indicate a bad head gasket but if the compression is good then the gasket is fine. But I have had this exact thing happen was a bad cap this is easy to tell after warm up the top radiator hose will be limp no pressure or very low this indicates a bad cap which every hill will cause the overheating. Hope this helps
Posted on Aug 10, 2009
Check for coolant flow at the Purge line,this is a common problem on the Northstar.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.
Posted on Aug 11, 2009
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Posted on Jan 02, 2017
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