91 Chevy K1500 350 engine 5.7l Drove the truck about 3-5 miles came back home and turned the truck off, this is what the problem I am having----- the coolant reservoir gurgles after shut down. What could be the problem? Changed thermostat also took it out, new heater core,engine coolant sensor, also changed the radiator cap and checked for any leaks in the hoses. Still gurgling.

SOURCE: smell antifreeze, no leaks, gurgleing behind drivers side dash.

there is air in system causing gurgling/set heater to defrost and check for sweet smell. do while stopped if core is leaking windshield will fog up and be hard to clear.

SOURCE: Dodge 2002 Grand Caravan V6 3.3 engine overheating/no cabin heat.

Replace the bad radiator hose first.  Second- get you special formulated anti-freeze dye from the auto store and pour it into the radiator.  Third- make sure you got all the air pockets out of your system, cause the coolant system won't work with air pockets in it.  Fourth- Check for leaks by looking for the colored dye.  If it's not the radiator hose, then could possibly be a pin hole in your radiator.  Would suggest replacing all the radiator hoses at the same time while you got the coolant system disconnected, cause you don't want to have to come back and replace another hose in a few months.

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Jeffrey Turcotte

• 8991 Answers
• Posted on Sep 09, 2010

SOURCE: temperature gauge went up. put coolant in

Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat and let me know if you have questions

SOURCE: 1999 mercury grand marquis occasionally overheats,

Check the antifreeze for oil, pull your dipstick out, see if antifreeze is in oil or smells sweet or over full, sounds like you may of a bad head gasket. You can also check this by having a compression test done on the cylinders.