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Posted on Jan 02, 2017
Perform a liquid block test (with the bottle of fluid over the radiator mouth.) If the blue liquid turns yellow or clear, you have hydrocarbons entering the cooling system (usually via head gskt.) If not, you have ruled out a costly repair.
Sounds like it overheats pretty easily, without t-stat! This block testing liquid is cheap, and will verify a suspected leaking head gasket without lengthy diagnosis. Hope it's better news, but good luck!
Posted on Jan 28, 2009
SOURCE: My 2002 Ford Thunderbird is
You most likely have air in the system. These things can be a royal pain to get the air bleed out of the system.
Look back next to the brake booster and you will see a rubber tube with a screw cap in the end of it(this is the heater bleed), also on the front of the intake area you will see a black tube with an allen sloted cap.
Remove the slotted cap and screw the screw cc on the rubber tube. Add coolant to the coolant jug allowing the system to equalize until no more coolant can be added. Add as much coolant as possible to the engine fill( the sloted cap near intake). The heater air bleed will remain open.Replace the engine fill cap.Start the engine and turn the heater to MAX position.Close the heater air bleed when a steady stream of coolant comes from it, during engine idle. Allow the engine to idle for five minutes, add coolant to the degas bottle as needed to maintain the cold fill MAX mark.Reopen the heater air bleed to release any entrapped air and close again. Maintain engine speed of 2,000 rpm for 3-5 minutes or until hot air comes from the heater.Return to idle and verify hot air is still coming from the heater. Set the heater temperature setting to 75° F and allow the vehicle to idle for two minutes.Shut the engine off and allow to cool.After the engine has cooled, add coolant to the degas bottle to bring the level to the cold fill MAX mark. This should have the air out of the system.
Posted on Mar 02, 2009
SOURCE: i got 2001 bmw 330i
if you replaced the thermostat thats actually connected to the engine and not the thermostat thats underneath the expansion tank/reservoir, I would recommend filling the expansion tank to the top remove bleeder screw and allow the vehicle to sit keeping coolant filled to the top of reservoir, once you feel there is no more air in system reinstall bleeder screw and correct fluid level in expansion tank. There are a couple different tools that are used to properly bleed the system. one tool you can pull a vacuum on the system and when the vacuum is released coolant is pulled back into system. At the same time you could have a blown head gasket. There is also a tool out there to check for combustion gases in your cooling system which would be a signs of a blown head gasket. Another recommendation is to pick up a cooling system pressure tester (can be picked up as a loan a tool @ autozone) usually pressurizing the system will help to remove air pockets
Posted on May 03, 2009
Fuses & RelaysThe fuse box is located under the engine hood on the left side, near the upper strut housing or near the battery.
Various relays are also mounted on the fuse box for easy accessibility.
The flashers are located behind the bottom center of the lower instrument trim panel.
- BMW E36 Fuse Box Relay Layout
- 325ci Owners Manual
Posted on Oct 23, 2009
SOURCE: coolant leak and overheating
I had a water leak on my 730i I found it after much trouble.A hairline crack in the plastic thermostat housing which onlly opened up when hot and of course got worse as water level dropped.Hope this helps.
Posted on Oct 30, 2009
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