Question about 2005 Buick Rendezvous
Replaced thermostat two months ago along with oil change and air filter transmission fluids good just started running hot this am went to max hot so pulled over cut off sprayed water on radiator to cool down then checked the water bin its full makes bubbly noises when off on side of road overheating heater in car blowing cold air when running hot also when running hot if raise rpms temp on gauge drops a lil bit need help please any idea?? also fan is running on side of road when car is off I know.
Find Causes of Engine Overheating
If your engine is overheating, Try this procedure:
Posted on Apr 24, 2015
Possibly leaking head gasket. Easiest way to check would be to fill radiator full, start engine and watch coolant level in the radiator cap opening. The top radiator hose will become hot when thermostat begins to allow coolant flow through the radiator. You may have to top off the coolant. Still with the radiator cap off watch for water belching out of the radiator neck. If coolant does belch out of the radiator cap neck, refill with water. If it belches out coolant again it would be combustion gassed forcing the coolant out of the radiator.
This process should take about 1/2 hour to diagnose if it is a head gasket leaking combustion gasses into the coolant.
The radiator fan may run once car is shut off to cool engine compartment to prevent gasoline in fuel lines from vaporizing which would cause a condition called "vapor lock". A car won't start if fuel lines are vapor locked.
Good luck, I hope this helps you to figure out the problem.
Posted on Apr 17, 2014
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Posted on Jan 02, 2017
SOURCE: Heater on and working -
one of two things could be happening... either the radiator is low on coolant or your thermostat is stuck (which if it is stuck you will have to replace) . But first let engine cool down, you need to check coolant level, squeeze one of the radiator hoses even if engine is cooled down to make sure there is little or no pressure in cooling system then remove radiator cap/coolant bottle cap to check level.by the way if it is low you will need to figure out why.. the obvious reason is a leak you may have to go to a shop and have system pressure tested to locate leak to repair.. good luck to ya.. hope this helps
Posted on Mar 20, 2011
SOURCE: I have a 1998 Buick Century and recently my temp gauge was spiking close to the red. It never actually overheated and after pulling the vehicle over for a few minutes the thermostat opened up draining
when the thermostat opened where did the coolant drain to? not understanding. did you put the thermostat in upside down blocking the cool will cause heater to blow cold air. if not, could be radiator itself.
Posted on Nov 16, 2012
Sorry to say you probably have engine troubles.
A leaking head gasket will drink the coolant and cause the bubbles to form.
A mechanic can check for leaks by pressurizing the cooling system and also checking for exhaust gas in the radiator.
Posted on Feb 21, 2013
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