The O2 sensor can be tested... - Saab 900 Bulletin Board - Saabnet.com
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The O2 sensor can be tested...
Posted by LM [Email] (more from LM) on Thu, 24 Jul 2003 19:30:25
In Reply to: Can a bad thermostat destroy an O2 sensor?, Harold, Thu, 24 Jul 2003 15:47:45
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http://216.78.172.32/tuneup_folder/amm.htm
some say it should fluctuate much faster than listed above. DMM somewhat limited but give approx idea (oscilloscope more definitive)
You might do a visual ck of the cat for glowing, or it can be tested w/a special meter fore and aft (ck recent thread on inexpensive cat replacemnts)
The t-stat _helps_ the car warm up quickly (as well as regulating hot end), getting the engine and oil to its designed operating temp range. Running cold is not good for several reasons: urge you to replace the t-stat soon.
Do you have any codes?
And other possibilities...
posted by 63.107.255...
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