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2001 Volvo V70 Replaced heater core on XC70, now fan makes

Tiny
GOLDENAFRO
  • MEMBER
  • 2001 VOLVO V70
Heater problem
2001 Volvo V70 All Wheel Drive Automatic 130000 miles

Hi, I had a heater core leak on my 2001 Volvo XC70. A friend who is a mechanic replaced the core for me, but when I was driving home and used the heat it made a very loud noise and vibrated the dash. It never did this before. It isn't very noticeable at lower settings, but the higher the fan is set to blow the louder and more it vibrates. Any thoughts on what might have happened to cause this. Or more importantly what might be a remedy? Any help is appreciated. I am currently in the middle of a long string of random repairs on this car and want to be done, at least for awhile. Thanks, Andy
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Tuesday, January 12th, 2010 AT 6:47 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi goldenafro,

Thank you foe the donation.

The vibration should be from the blower motor. It is out of balance causing the vibration. You would need to rmove the motor to check for faults.
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Wednesday, January 13th, 2010 AT 9:05 AM
Tiny
GOLDENAFRO
  • MEMBER
  • 2 POSTS
I need to move the blower motor or the engine motor? What type of faults am I looking for?
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Wednesday, January 13th, 2010 AT 12:28 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The blower motor.

Turn off engine and with ignition switch ON, turn on the blower and work it through the various speeds, if vibration is felt, the blower motor is confirmed to be faulty.

Check for cracked blades or anything that is stuck to it to cause imbalance.
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Wednesday, January 13th, 2010 AT 12:57 PM

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