Low or no heat

Tiny
GSMITH
  • MEMBER
  • 1999 SATURN SL2
  • 4 CYL
  • FWD
  • MANUAL
  • 170 MILES
Have a 1999 sl2. Temp sensor changed, coolant flushed, new thermostat. STILL, very little heat. Have to run recirc, or the heater core cools down and I get cool air - can't run the blower to high or same result! Temp gauge reads higher since new temp sensor installed also !
Monday, December 6th, 2010 AT 12:12 AM

4 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So is your temp door moving when you slide it to hot?Also are both your hose's getting hot to you heater core?How hot is your temp gauge getting?
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Monday, December 6th, 2010 AT 12:18 AM
Tiny
FEDROWG
  • MEMBER
  • 4 POSTS
You need a new heater core. Everything else is working properly but heater core is restricted which causes less hot water to pass thru the core resulting in less heat and rapid cooling.
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Monday, December 6th, 2010 AT 12:56 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I would see if you only had one hot heater hose that would indicate you a flow issue thru the heater core.
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Monday, December 6th, 2010 AT 1:07 AM
Tiny
GSMITH
  • MEMBER
  • 2 POSTS
Thanks everyone for you tips on my heater problems in the SL2. I will try feeling for temp differences between the two hoses. But, I feel you are both right about a possible flow through issue in that core.

Thanks so much!

. Respectfully,
Gary Smith - Holyoke, MA
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Monday, December 6th, 2010 AT 3:53 AM

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