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Old 10-05-2017, 02:56 PM   #6
fdryer
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Join Date: Jan 2006
Location: NYC
Posts: 39,330
 

2003 L-Series 3.0L Sedan
Default Re: 19999 SW1 temp gauge behaving oddly after radiator replacement

Kaspar7, with questions of coolant temps and why the temperature needle swings more than it has after replacing the coolant sensors, there may be a simpler way to have an overall perspective - using a reader capable of displaying coolant temps. If you don't own one and are confused as many about which one to buy, you might consider a free app (option to upgrade for a few dollars) for cellphone use and a bluetooth adapter plugged into the OBD II port. A popular app is Torque and a generic bluetooth adapter from ebay. Members already using them can recommend bluetooth models. Or buy a plug-in reader. Observing actual temperatures may give you more insight to correlate temps to every day driving. And these OBD II tools can decode the check engine light.

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