# Cadillac northstar coolant loss

**URL:** <https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598>\
**Category:** Maintenance/Repairs\
**Tags:** deville, coolant, cadillac\
**Created:** [February 16, 2010, 6:10pm UTC](https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598 "2010-02-16T18:10:20Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![billbb](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@billbb](https://community.cartalk.com/u/billbb)\
**Post date:** [February 16, 2010, 6:10pm UTC](https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598/1 "2010-02-16T18:10:20Z")

</div>

i have a 99 cadillac northstar v8 and it keeps losing coolant at a rate of several ounces per day.i can not find where it is going. my mechanic put it on a pressure test and did not find it. i can smell coolant when i park the car and sometimes when driving.there is no coolant on the tailpipes and i do not detect steam in the exhaust.no coolant on the garage floor either. any suggestions?

---

<div class="post-metadata">

**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [February 16, 2010, 7:09pm UTC](https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598/2 "2010-02-16T19:09:47Z")

</div>

The heater core leaking is highly likely suspect.

---

<div class="post-metadata">

**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [February 16, 2010, 8:30pm UTC](https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598/3 "2010-02-16T20:30:04Z")

</div>

When is the last time you changed the water pump? Hope you don’t have a head gasket leak.

---

<div class="post-metadata">

**Author:** ![billbb](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@billbb](https://community.cartalk.com/u/billbb)\
**Post date:** [February 16, 2010, 9:13pm UTC](https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598/4 "2010-02-16T21:13:56Z")

</div>

thanks for the reply.water pump is 2009 maybe 8000 miles. i am having a mechanic check to see if the head gaskets are leaking tomorrow. if so i wont have it repaired,its not worth it.

---

<div class="post-metadata">

**Author:** ![billbb](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@billbb](https://community.cartalk.com/u/billbb)\
**Post date:** [February 17, 2010, 5:13pm UTC](https://community.cartalk.com/t/cadillac-northstar-coolant-loss/44598/5 "2010-02-17T17:13:19Z")

</div>

you were right. it is the water pump again.got only 6000 miles on the last one.never use rebuilts. this time a new one with a lifetime warranty is going in.the last one was a one year warranty. it lasted 1 year and 3 weeks.