Question about Cars & Trucks
If you have a viscous fan hub then have it replaced as it is not moving the air through the radiator. Check how you placed the thermostat in the system as the bulb bit faces into the head or block so that it can sense the rising water temperature and open as required.. With not water moving through the hose I suspect that may be your problem
Posted on Oct 13, 2013
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Posted on Jan 02, 2017
There seems to be an air pocket or no antifreeze in engine block. Try this method disconnect upper radiator hose and pour water directly into hose down into engine block until it full. when its filled reconnect hose and fill up radiator. as the vehicle warms up open bleeder valve on the thermostat housing and release air from system. open slowly and BE VERY CAREFUL WATER WILL BE HOT, bleed until you get a steady stream opening and cosing valve. However if all of this don't work. You may have a bad pump. Good Luck
Posted on Dec 27, 2008
Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.
Posted on Nov 19, 2009
SOURCE: 1995 Chrysler Cirrus overheating
Probably not water pump. Engine is notourious for vapour lock.
Cooling system must be blead of air before thermostat will work. Cool bottom rad hose is a dead give away. If you are still watching this forum reply , and I will walk you through the only way I know how to make it work properly. It's actually easy if you do it my way. I have worked on lots of cars , and this engine was the hardest to bleed out. Did one Yesterday , and works perfect.
Posted on May 16, 2010
Testimonial: "I need help on how to bleed the system thanks"
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Jun 08, 2011 | 1991 Nissan Pickup
Prepare for the replacement by disconnecting the negative battery cable and draining the engine coolant into a container--you need to remove the drain plug from the radiator first and then the drain plug at the engine block.
Remove the engine's cooling fan by loosening the fan/water pump pulley nuts, unclipping and removing the fan shroud's lower half, removing the water pump pulley nuts and pulling the fan out from underneath.
Disconnect all components blocking access to the thermostat by removing their bolts. On four-cylinder engines, this includes the air cleaner, air intake duct and the power steering pump's support bracket. On a 3.3 liter V6 or SOHC engine, remove the upper radiator hose from the intake manifold's coolant outlet.
Slip off the drive belts blocking the thermostat by turning their tensioner bolts with a wrench or breaker bar. On a 3.3 liter truck or DOHC engine, follow this by removing the upper idler pulley bracket. On a 3.5 liter engine, remove the water pump drain plug from the front end of the block.
Detach all hoses from the thermostat housing cover by loosening the hose clamps with pliers; this usually includes the lower radiator hose. This is only needed on V6 engines; you will keep the hose attached on a four-cylinder.
Remove the thermostat housing cover by removing its bolts. There will be some coolant spilling out when the gasket seal breaks.
Disconnect and remove the thermostat from its cover by removing its screws. Take note of how the thermostat is positioned within the cover.
Scrape away all traces of gasket or sealant from the housing and cover and clean the surfaces with lacquer thinner.
Apply RTV sealant around the edge of the thermostat cover. You need to re-install the cover within five minutes of applying this sealant.
Mount the new thermostat into the cover in the same position the old thermostat was in.
Re-install the thermostat cover and all other parts in reverse order of installation.
Wait a half hour for the RTV sealant to cure before refilling the engine coolant. Use fresh coolant if the old coolant is contaminated.
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