- #1 of 8
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intermittent heat
by rgnmstr
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Nov 05, 2008 (2:09 pm)
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Winter is coming. My 2002 LSV8 Sport has developed an intermittent heating problem. Going down the road heat comes out the vents. When at idle or when coasting with my foot off the gas the air coming out the vents turns cool. Anyone experience this?
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- #2 of 8
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Re: intermittent heat [rgnmstr]
by rlong2
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Nov 06, 2008 (7:11 pm)
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Replying to: rgnmstr (Nov 05, 2008 2:09 pm)
My 2002 LS is in the shop right now for the same problem. They said that there is an auxillary water pump that keeps the coolant flowing to the heater core and keeps the engine cool when at idle. It's a dealer product only. Here in KC it's $170.00. Check to see if your heater core hoses are hot. Mine were hot going into the heater core but not on the return side. Good Luck.
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- #3 of 8
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Re: intermittent heat [rlong2]
by rgnmstr
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Nov 06, 2008 (10:03 pm)
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Replying to: rlong2 (Nov 06, 2008 7:11 pm)
$170 for a little pump! How much is the labor? I couldn't begin to guess where the heater hoses are. Todays cars have 8 million wires, vacum hoses etc and it's all buried under plastic shrouds. I don't recognize anything anymore when I pop the hood these days.
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- #4 of 8
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Re: intermittent heat [rgnmstr]
by rlong2
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Nov 10, 2008 (5:27 pm)
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Replying to: rgnmstr (Nov 06, 2008 10:03 pm)
The labor was $75.00. I'm not sure where it's located, but it did the trick. It's hotter than fish grease now.
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- #5 of 8
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Re: intermittent heat [rlong2]
by rgnmstr
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Nov 10, 2008 (6:29 pm)
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Replying to: rlong2 (Nov 10, 2008 5:27 pm)
Well, I fooled around with mine over the weekend. I tried "bleeding" the cooling system to see if there was any air in the system. After doing this I filled the coolant reservoir to the top. It seemed to take more fluid than I let out. Maybe it was a little low to start with. Anyhow, now my engine light is on all the time. Could draining fluid while bleeding the system triggered something that caused the engine light to come on? BTW the heat at idle has improved.
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- #6 of 8
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Re: intermittent heat [rgnmstr]
by rlong2
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Nov 10, 2008 (7:09 pm)
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Replying to: rgnmstr (Nov 10, 2008 6:29 pm)
Yeah, It has a sensor for low coolant. Just disconnect the negative battery cable for  30 seconds and it will reset the fault.
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- #7 of 8
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Re: intermittent heat [rlong2]
by rgnmstr
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Nov 10, 2008 (10:03 pm)
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Replying to: rlong2 (Nov 10, 2008 7:09 pm)
Didn't know about that. I'll try it tomorrow. I did read in the manual that a engine light corrected fault should go away after 3 cold starts.
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- #8 of 8
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Re: intermittent heat [rgnmstr]
by rgnmstr
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Nov 11, 2008 (12:06 pm)
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Replying to: rgnmstr (Nov 10, 2008 10:03 pm)
I disconected the neg. battery cable and that took care of the engine light problem. Thanks. I think filling the coolent overflow tank the other day has maybe solved my low heat at idle. Now if I could figure out why my drivers door electric lock only works half the time and if I could get a couple of coil packs replaced at a fair price I'd have a perfect car once again.
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