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Strange Leak

Tiny
CCFH
  • MEMBER
  • 2003 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
2003 suburban 4wd has a coolant leak when the heater is running. My temperature is a rock steady 205-210 degrees and no other leaks are visible from the underside of the car. I have no oil in coolant and vice versa. There is a major static leak after the car is shutdown and left to sit.
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Wednesday, December 1st, 2010 AT 9:20 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Have you checked the heater core?
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Wednesday, December 1st, 2010 AT 10:28 PM
Tiny
CCFH
  • MEMBER
  • 3 POSTS
No I have not. It seems to be coming from the front of the motor, I am leaning towards a possible crack in the pump or crack in one of the lines coming off the water pump. Does that make any sense? Thanks for th advice by the way.
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Wednesday, December 1st, 2010 AT 10:32 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
If it is from the front, check the weep hole on the water pump. Also, check along the intake.
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Thursday, December 2nd, 2010 AT 12:37 PM
Tiny
CCFH
  • MEMBER
  • 3 POSTS
Found it! Leaking statically from behind the pulley! Looks to be where the input shaft enters the water pump. Doesn't drip at all when the motor is running only when shut down. Well I guess I know what I am doing tomorrow! Yeah me! THanks for your help.
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Saturday, December 4th, 2010 AT 3:50 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Glad you found the problem. If you have questions, let me know.

Joe
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Monday, December 6th, 2010 AT 5:20 AM

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