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1997 BMW 318 gets hot at idol

Tiny
RED318TI
  • MEMBER
  • 1997 BMW 318
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I can drive it for hours and it wont get hot but if it sets at an idol for 5 to 10 minutes it starts to get hot. Then I rev the engine or drive it and the temp go right back down. Help going crazy.
Friday, April 25th, 2008 AT 10:17 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Replace the thermostat and make sure your coolant level is correct and the cooling fan is coming on.
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Friday, April 25th, 2008 AT 10:36 PM
Tiny
RED318TI
  • MEMBER
  • 4 POSTS
Thermosatat was replaced befor I replaced head gasket do you think it still might be bad.
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Saturday, April 26th, 2008 AT 12:40 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Take it back out and test it Or leave it out and see what happens this will tell you something at idle on that time frame- How old is the radiator cap?
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Saturday, April 26th, 2008 AT 12:45 AM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Is there a fan and a fan clutch driven off the water pump? If not replace them with part# 11-52-1-723-918 & 11-52-1-723-363
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Saturday, April 26th, 2008 AT 9:52 AM
Tiny
RED318TI
  • MEMBER
  • 4 POSTS
The thermostat and where the hoses connect is all one piece I do have an old one. Will that make it run cooler or hotter.
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Saturday, April 26th, 2008 AT 4:14 PM

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