Leaking coolant underneath

2003 CADILLAC DEVILLE
178,456 MILES • V8 • 2WD • AUTOMATIC
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TRUALREADY
  • MEMBER
  • 1 POST
When I drive my car for awhile and put it in park the engine idles is high. when i turn it off, i notice my coolant running out. But it never overheats. When the engine cool i check the reservoir and the coolant is low. I start the engine and the idle is still high. I top it off with coolant and the idle drips down to normal. But the car never runs hot. What could cause that?
May 22, 2017 at 3:50 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Hello,

It sound like you may have a blown head gasket which will cause the problems you have described. Please follow this guide to confirm or not.

https://www.2carpros.com/articles/head-gasket-blown-test

Please let us know what happens. I am curious ;)

Cheers, Ken
May 26, 2017 at 2:26 PM
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