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No heat

Tiny
ROMANT1960
  • MEMBER
  • 2002 SATURN SC1
  • 4 CYL
  • 2WD
  • AUTOMATIC
I have a 2002 saturn sc1 that is not generating any heat
i have replaced the thermostat and capped fluid
the blower works fine but cold air
is ther a climate control valve or a fuse causing this.
Or is my problem the heater core clogged but I would guess that would be gradual and not so sudden
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Wednesday, February 9th, 2011 AT 5:46 PM

8 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be the heater core or the air blend door/actuator
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Wednesday, February 9th, 2011 AT 6:02 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Hey rasmataz how have you been?Just to add to this answer I would slide the temp control lever back and fourth from cold to hot and look behind the a/c control's on the drivers side and see if the arm for the blend is moving with temp slider. The blend door is cable operated. Also see if both heater hose's going into the heater core thru the firewall of the car are getting too hot to touch when the engine is up to operating temp.
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Wednesday, February 9th, 2011 AT 6:39 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I'm doing fine Sat9, I hope its likewise for you-Take care and God Bless
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Wednesday, February 9th, 2011 AT 6:49 PM
Tiny
ROMANT1960
  • MEMBER
  • 5 POSTS
Yes possibly the door actuator but the temp control is a dial
not a slider
therefore is it still cable controlled or electronic or vacumn
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Wednesday, February 9th, 2011 AT 11:44 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Yes you are correct it's a dial I was thinking of the older year saturns 1991-1999 which were slider's. But it's still cable operated so check what I asked you to check and get back to me.
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Thursday, February 10th, 2011 AT 12:03 AM
Tiny
ROMANT1960
  • MEMBER
  • 5 POSTS
Thank you
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Thursday, February 10th, 2011 AT 12:12 AM
Tiny
ROMANT1960
  • MEMBER
  • 5 POSTS
Checked climate actuator working fine
do feel return line of heater core cold inlet hot
i guess heater core
correct?
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Thursday, February 10th, 2011 AT 3:03 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Sound's like the heater core is restricted I would take the hose's off the heater core and see if you can blow thru it freely. If you can't then you found your problem. Let me know what you find.
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Thursday, February 10th, 2011 AT 6:24 PM

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