Question about 1985 BMW 3 Series

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How do you vent thermostat on 325E (1985)? I replaced my upper radiator hose and I have a feeling thermostat will not open. Thanks for input on this matter.

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There should be 2 bleeder screws in the system, one on the expansion tank, and one on a thermostat housing. Open both screws all the way. Turn the key to the On postion (but dont start the car). Then turn the heater to max heat, but have the fan set at the lowest setting. Fill the expansion tank til coolant comes out of both bleeder screws with no bubbles. After that close the screws (be very careful not to over tighten them!!). Then completly fill the expansion tank. (dont mind the full mark, if theres air in the system, it will drop the level in the expansion tank) And thats it. Drive the car around then check the level.

Posted on Mar 12, 2009

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2 Answers

Overheating


Be sure the radiator is full of coolant, Start the engine when cold, while engine is running feel the top radiator hose. As the engine warms up the upper radiator hose will suddenly get hot when the thermostat opens. If the upper hose stays cool, the thermostat may be stuck closed. If thermostat is stuck closed It must be replaced.

Without knowing more about your car, this is all I can recommend.

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After replacing thermostat in 2000 Grand Prix, the upper radiator hose remains hard


Hard after it warms up you should be okey

Check the bottle after it is cold--- to see if it
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Nov 28, 2012 | Cars & Trucks

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Air trapped in cooling system after new thermostat


I don't mean to sound insulting at all but I'm not certain what your experience is with engines.
Is it possible you put the thermostat in upside down?
Do you feel pressure on the top hose when you squeeze it? Does it feel pressurized? If so then the water pump is doing it's job.
Easiest way I have seen to "burp" a system after doing a coolant change or thermostat swap is to get one of the radiator caps that has a vent lever built into the top of it. This way once the engine is hot you can slightly pull that lever up and let it vent out the air a little bit at a time. Another way would be to to leave the radiator cap off. Start the engine and squeeze the bottom hose to burp the air to the top of the system. Hope this helps.

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2 Answers

My 2004 ford freestar has no heat. how do I add antifreeze or check if it is the thermostat


When the engine is cool, take off the radiator cap and add fluid till full. Also add coolant to the overflow tank if needed
To check the thermostat, leave the radiator cap off, turn heater controls to high heat, and start the engine and run it till at operating temperature (this is to remove air from the system.) Coolant level should drop a bit when the thermostat opens, so you may need to add more. Replace rad. cap when engine is warmed up.
The only way the thermostat would cause no heat is if it were stuck open. So feel the upper radiator hose as the engine warms up. It will be cold or cool till engine starts to warm up-should take about 10-15 minutes, and then the thermostat should start opening, and the upper hose will start getting hot. If the engine takes a long time to warm up, like 30 minutes, the thermostat may be stuck open, needing replacement. If all seems good, check the actuator doors (temperature blend door) on the heater case. The doors have to open properly to let air from the blower motor to pass across the heater core, and then out the vents.
Good luck. If the coolant level was low, that was likely the problem.

Nov 16, 2012 | 2004 Ford Freestar

1 Answer

I have a golf 5 2005 and the temp gauge will rise to 90 which is normal then return back to the resting position, i am not losing water. is this a sensor problem. thanks


possible the sensor or the thermostat warning that either is going to stop open or close where is dangerous to the engine.When you do have this situation before you do anything just do a test, switch the engine off and carefully check if the same temperature feeling is on radiator vents radiator upper and lower hoses. If you have every were the same it is better to renew the thermostat.Apply to an authorized garage for the replacement.

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Hi,i,m a guest here .i have overheating problem with my toyota camery 92 v6...i got that my fan isn't working well , i changed it & the fan got better,,but it's not fixed yet & still i have...


How about the thermostat?

If your getting heat out the vents, the coolant is full, the upper hose is hot and the lower hose is cold that the t'stat is not opening.

If both the hoses are hot, the coolant is full, and you feel the fan pushing hot air than check the front of the radiator for debris build up. If there is no debris than the radiator could be plugged internally or the cooling fins may be severely rotted.

If the coolant is full, there is no heat out the vents and the upper hose is hot/lower hose is cold the water pump is not circulating enough coolant.

Nov 11, 2010 | 1992 Toyota Camry V6

1 Answer

Where is the thermostat on my 1985 for escort (hatchback) 1.6L engine ?


follow the upper radiator hose to the engine, remove that hose at the engine and u will see the thermostat under the cover.

Sep 29, 2010 | 1985 Ford Escort 1985 4 Door

1 Answer

How to put a thermostat on a 1985 merecury cougar


You'll need to remove the upper radiator hose from the thermostat housing. Unbolt the 2 bolts holding the thermostat to the intake manifold and remove the thermostat housing and thermostat. Clean both mating surfaces and install the new thermostat with a new gasket, reinstall the radiator hose, fill with anti-freeze and check for leaks.

Apr 24, 2010 | 1985 Mercury Cougar

1 Answer

Need to replace a thermostat on a 2000 dodge intrepid 3.2


Just follow the upper radiator hose to the housing. Drain the coolant into a container. Remove the two housing bolts,it is NOT, necessary to remove the hose. Lift the housing off, at this point take note that the pointed side of the thermostat always points upward(or toward) the radiator hose. They are using o-rings now so no more messing with gaskets and glue sealers. Replace the thermostat and place the housing carefully as not to disturb the centering of the thermostat.Retighten the bolts evenly back and forth until they are tight. Close what ever you used to drain the radiator(bottom hose, drainplug) and now listen carefully, jack up the front of the car about ten inches to a foot. Pour the coolant back into the radiator or overflow tank, whatever the case may be. Place your climate control lever on heater and your temp control on hot. Start the engine and keep a very close eye on the level of the fluid filling whenever necessary. When the thermostat opens you'll be able to know buy the steam being emitted from the overflow/ raditor and keep topping it off. In side the vehicle, rev the engine for about one minute within practicle limits, leave it running and cap off the radiator/ coolant overflow, jack the car back down. Take a quick ride get up to a good speed feel for heat at the vents and watch your guage/ light for any problems. You're all set to go kid...Thanks, Dana

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1 Answer

Location of thermostat


follow the upper radiator hose to the engine.the theostat is under the hub where the upper hose attached on the engine.

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