Interior heat problem

1999 SATURN SL2
172,000 MILES • 1.9L • 4 CYL • 2WD • AUTOMATIC
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BRIAN SHANNON
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  • 2 POSTS
Blows cool to slightly warm at low rpm's then warm to hot at higher rpm's. Coolant level seems good.
Jan 3, 2018 at 12:36 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Good morning.

I would start by replacing the thermostat. verify the coolant level is correct. If the issue is still present you may have a clogged heater core. It will need to be flushed out of all debris.

Roy
Jan 3, 2018 at 3:16 AM
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BRIAN SHANNON
  • MEMBER
  • 2 POSTS
Thanks Roy. I kind of thought, but wanted some corroboration from an expert. Appreciate it. Brian
Jan 3, 2018 at 6:45 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
You are welcome Brian. Keep us updated with the result.

Roy
Jan 3, 2018 at 6:46 AM