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When my engine is warm and I have the heat on the idle goes low? Any ideas?

Tiny
CARDINALS5
  • MEMBER
  • 2006 CHEVROLET TRAILBLAZER
  • 69,000 MILES
Even after I turn the heat off it will still idle low sometimes but mostly when the heat is on especially when its blasted. My uncle thinks it may be the blower motor switch
Saturday, December 10th, 2011 AT 3:46 AM

3 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
It could be, but not likely. Have it scanned for codes and let us know what is found. Tell the shop, or whoever it is that does the scanning for you, that you need both hard and soft codes pulled.
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Saturday, December 10th, 2011 AT 4:23 AM
Tiny
CARDINALS5
  • MEMBER
  • 2 POSTS
I get the codes idle to low P0506, and pulse modulation delivered torque malfunction B0244
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Saturday, December 10th, 2011 AT 2:38 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Have you tried adjusting the idle yet?
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Saturday, December 10th, 2011 AT 7:10 PM

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