1997 Audi A4

Tiny
STEVEDAG
  • MEMBER
  • 1997 AUDI A4
  • 6 CYL
  • AWD
  • MANUAL
  • 90,000 MILES
When I'm driving (in motion)my heat works. When I slow down to a stop the heat stops. The thermostat has been changed already.
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have the same problem?
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No
Thursday, September 4th, 2008 AT 5:12 PM

5 Replies

Tiny
KHLOW2008
  • EXPERT
Hi stevedag,

Did you check the coolant level? Does reving the engine slightly when vehicle is stopped make any difference?
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Saturday, September 6th, 2008 AT 8:54 AM
Tiny
STEVEDAG
  • MEMBER
Coolant level is fine. If I keep the rpms at 3000 while im stopped the heat will blow.
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Saturday, September 6th, 2008 AT 11:13 AM
Tiny
KHLOW2008
  • EXPERT
Hi stevedag,

There is a possibility of clogging in the water passage of the heater core.

Is there any sign of overheating?
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Saturday, September 6th, 2008 AT 1:20 PM
Tiny
STEVEDAG
  • MEMBER
No over heating at all. Tge car has been running great other than the heat.I did check the input and out put hoses thru the fire wall, one is hot the other is not. Is there a way of unclogging the core? Steve
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Saturday, September 6th, 2008 AT 9:29 PM
Tiny
KHLOW2008
  • EXPERT
Check open/close valve for proper operations. If the clogging is minor, remove the hoses and apply some pressure to get it unclogged. If it is in the heater core, you might need to replace it.
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Sunday, September 7th, 2008 AT 12:57 AM

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