Question about 1999 Saturn SL
Yep, you have to burp the radiator. Jack up the car so that the radiator cap is elevated. With the coolant topped off, start the car and let it run until it's about 3/4 of the way to overheating. Then shut it down and go have a beer. When it cools off enough to safely open the radiator cap, do so, and any air trapped in the system will bleed out.
What you're doing is circulating the coolant and the air bubbles inside. The bubbles get lodged behind the thermostat and stay there, keeping it from opening (this causes the car to heat up). When you later pop the cap off the radiator, the pressure is vented from the system, the thermostat opens, and the bubbles pass through. They'll work their way to the radiator (since you've got it elevated) and pop out the open cap opening.
Your coolant level will likely drop somewhat after doing this, as the air bubbles will be gone and the space they took up in the system is now available. You may need to add a little more coolant, so top if off (with the car back on the ground) and recap the radiator, fill the overflow to the marked point on the tank, and you're good to go.
Posted on Aug 08, 2008
Tips for a great answer:
Sep 22, 2018 | Ford Cars & Trucks
Apr 18, 2015 | 2002 Pontiac Grand Am
Nov 07, 2012 | 2001 Nissan Sentra
Feb 28, 2012 | 1998 Lincoln Continental
May 04, 2011 | 2000 Ford Focus
Mar 12, 2011 | 1998 Buick Century
Mar 01, 2010 | 2004 Chrysler Concorde
Dec 09, 2009 | 1995 Mercury Cougar
798 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: