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thumping noises from heater


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mark552
New User

Sep 30, 2014, 5:32 AM

Post #1 of 5 (1065 views)
  post locked   thumping noises from heater  

I have a 2007 Ford Explorer sport trac 4.0 engine- everytime I start it I hear thumping noises- especially after I turn the heater on. After awhile it goes of- it sounds like something isnt opening or closing bthe right way.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 30, 2014, 5:47 AM

Post #2 of 5 (1058 views)
  post locked   Re: thumping noises from heater  

That's going to be one of the actuators for the HVAC system that controls the air doors for mode and temperature. You have both vacuum and electric but the noise sounds like a vacuum actuator that is leaking vacuum somewhere.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



mark552
New User

Sep 30, 2014, 11:19 AM

Post #3 of 5 (1040 views)
  post locked   Re: thumping noises from heater  

thank you, I appreciate it


XOtheJUGGALO
User

Oct 12, 2014, 1:45 PM

Post #4 of 5 (996 views)
  post locked   Re: thumping noises from heater  

I have the same problem on my 98 chevy suburban v8 5.7 would this be the same thing that is worng with mine?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 12, 2014, 3:30 PM

Post #5 of 5 (988 views)
  post locked   Re: thumping noises from heater  

If you need help with something you need to start a new question of your own, not hijack this one.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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