Question about BMW 2001 325 i

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Hi i have a 2001 325I , I REPLACE THE THERMOSTAT AND TOP AND LOWER HOSE, AFTER THAT I START THE CAR AND START OVERHEATING ,TOP HOSE IS HOT , BUT LOWER IS COLD , CAR STILL OVERHEATING , BUT NOT BEFORE I REPLACE THE PARTS , ??? ANY HELPP

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If your engine is overheating, Try this procedure:

  • Dirt and debris can get lodged in the radiator air flow paths. This can block the radiator and cause your engine to overheat and damage the engine.

  • The thermostat can be stuck close. If you feel the upper hose very hot and the lower hose cooler than normal, it may be a stuck thermostat.

  • Make sure the radiator and the overflow bottle are filled to the proper levels.

  • Bleed air from the coolant system:This is best done by running the engine with the radiator cap off until you see when the air bubbles stop coming up.

  • Check the radiator fans: The easiest way is to turn on the cars air conditioner and turn up the A/C fans. Both radiator fans should come on when the A/C starts

  • Make a pressure test by using a pressure testing tool (available at most auto parts stores). Use the pressure shown on your radiator cap. Most cars are 16 PSI or less, so don't exceed that pressure. Replace the radiator cap if it doesn't hold the pressure.

Posted on Apr 28, 2015

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You need to bleed the system otherwise the antifreeze will not flow to the engine.

Posted on Nov 08, 2012

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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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Start the engine and warm up. Feel the upper and lower radiator hoses while it is warming up. You should feel heat suddenly in one of the hoses-usually the top hose. If it does not get hot but the engine get hoter than 1/2 way up the guage then you have a bad thermostat.

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My car overheats very easy.i can drive 1 exit on the highway and the temp goes up very fast. i dont know what it could be. there is always fluid in the reserve area and doesnt seem to be getting low or im...


COULD BE THERMOSTAT IF TOP RADIATOR HOSE IS NOT HOT AND BOTTOM RADIATOR HOSE GOING TO WATER PUMP IS HOT THE THERMOSTAT STICKING PARTIALLY CLOSE.IF TOP HOSE IS HOT THE RADIATOR,ENGINE BLOCK HEATER CORE NEED FLUSHING OUT.IF WATER PUMP WEEP HOLE LEAKING REPLACE WATER PUMP, FAULTY WATER PUMP WILL CAUSE ENGINE TO OVER HEAT.REPLACE RADIATOR CAP MAKE SURE YOU HAVE 50 / 50 MIX SOLUTION ANTIFREEZE AND WATER IN COOLANT SYSTEM. IF ALL LOOKS GOOD CHECK ENGINE OIL ON DIP STICK, IF OIL IN DIP STICK LOOK LIKE MILKSHAKE YOU HAVE BLOWED HEAD GASKET THAT WILL CAUSE ENGINE OVERHEATING WHILE DRIVING CAR IN SHORT DISTANCE AND ENGINE OVERHEATING.

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I have a 2004 ford F-150 5.7 L Triton V8 I am having problems with it overheating. It has fluid it isn't leaking fluid and the top hose going into the thermostat is hot so i am not sure if it is...


feel the lower hose when the top gets hot, if the lower is cool then you have a bad thermostat, the top hose will get hot even if stat doesnt open the lower is the one that need to be hot too. if i where to guess i would say you have a bad thermostat, hope this helps,

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Top radiator hose hot and lower hose cold. car overheating. I've changed thermostat.


Either the water pump has failed, the radiator core is plugged, or the lower hose has collapsed and blocking the flow of coolant. Hope this helps!

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Car overheating, coolant in resevoir cold, radiator top hose boiling hot. overheating problem comes and goes. 1999 VW passat


Check that your electric radiator fan is working. When the car is hot and idling it should come on.

Replace your therostat. I had a Chevy Citation that the thermostat would start to open and then close instead of opening all the way.

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1 Answer

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"Will start but will not turn over" What the hell do you mean by that ?
If you can start your engine then check the upper coolant hose, this one should get hot first, then, after thermostat opens, the lower coolant hose should start getting hot also, check both hoses every 30 seconds wile the engine warms up to operating temp. If any of the above is out of spec then I would change your water pump.

Dec 16, 2009 | 1995 Honda Accord

1 Answer

My car keeps overheating and i dont know why it does not show any problems with the thermostat and i reaches temps of 240 and 255 and runs hot


when the radiator cools of remove the cap on top of the radiator
and check the level make sure is up to full,run the engine and
rich the temp.over 200 check top rad. hose and lower hose, if
top is hot and lower is cool replace thermostat,

May 03, 2009 | 1999 Cadillac DeVille

2 Answers

Mazda overheating only when i drive past 40mph. I just changed my radiator and now I don't know what to do.


check to see if you are getting heat through the heater and then check and test your thermostat, if you require further assistance let me know. if this helps please take the time t rate this siote. and good luck.

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