Thread: overheating SL1
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Old 02-17-2017, 07:47 AM   #2
underthehood
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Join Date: May 2008
Location: Rockford IL area
Posts: 2,396

1999 SL2
2004 VUE 2.2L
Default Re: overheating SL1

If you constantly get "air in the system" you need to have the cooling system sniff tested. Air pockets around the ECTS can cause the fan to malfunction. That being said I don't think I read what year car it is. If prior to 2001 (IIRC) it has the poorly designed resin tip sensor. The new sensor will be brass tipped. Once you have that in there, see how the engine/fan behaves. If it still does this try turning the AC on which will force the cooling fan to come on. If the engine cools down than it could be the relay. Don't rule out a bad fan motor though

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