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Old December 2nd, 2010, 08:48 PM   #1
HVYRTFT
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05 Buick coolant temp

'05 Buick LeSabre, 3800 series II V6.

How can I check the coolant temperature sensor for a fault, using a mulitmeter?
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Old December 3rd, 2010, 06:46 PM   #2
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?
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Old December 3rd, 2010, 06:56 PM   #3
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OBD Scanner?
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Old December 4th, 2010, 01:08 AM   #4
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If you suspect it is faulty just replace it, they are like $12
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Old December 4th, 2010, 09:03 PM   #5
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had it scanned, the autostoners said it 'might be' the coolant temp sensor.



I didn't know they were that cheap. I'll try it.
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Old December 5th, 2010, 01:47 PM   #6
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Quote:
Originally Posted by HVYRTFT View Post
'05 Buick LeSabre, 3800 series II V6.

How can I check the coolant temperature sensor for a fault, using a mulitmeter?
With the engine cold, measure the resistance of the sensor. Then look it up in the temp / resistance table to see if it is correct. It's model specific so you'll need a repair manual.
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Old December 5th, 2010, 02:00 PM   #7
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Originally Posted by cronus View Post
With the engine cold, measure the resistance of the sensor. Then look it up in the temp / resistance table to see if it is correct. It's model specific so you'll need a repair manual.
Go here for repair manual.

Free usage of Chiltons online manuals - Great Lakes 4x4. The largest offroad forum in the Midwest
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Old December 11th, 2010, 03:26 PM   #8
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what was the code? If it was coolant temp below threshold- p0128, it will probally need a t-stat. The t-stats are pretty common.
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