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Old 12-14-2012, 10:47 PM   #1
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Default 00' Saturn SL2 Engine Coolant Sensor Replacement?

I have a 2000 Saturn SL2 that seems to keep me busy with repairs. I am currently having a problem with the "Check Engine Coolant" light coming on after the engine hits 3K RPMs. The temperature gauge also never goes past the 1/4 mark. I feel like maybe something is wrong with the thermostat and also I was told to check out the engine coolant sensor. Has anyone else had similar issues with this year/make/model?

166,000 Miles (approx.)

Also, how do you tell if you need to replace the valve cover gasket? Appears that oil is slowly leaking out.

(This is all very new to me, however, I am also learning quite a bit.)

Thank you,
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Old 12-14-2012, 10:51 PM   #2
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1997 SL2
Default Re: 00' Saturn SL2 Engine Coolant Sensor Replacement?

if the temp gauge is still sitting at 1/4 and the splices/connector on the ECTS are good after you replace the ECTS with a brass one, then yes suspect bad thermostat.

and the valve cover gasket, one of the classic signs of a worn one is while pulling the plugs you find oil on them (especially on #1).
97 SL2
DOB: 3/19/97
Date Obtained: 5/30/07
Status: Alive, 1/2 exhaust

2004 Merc G.Marquis GS
DOB: 2/4/04
Date Obtained: 7/6/12
Status: Alive, no heat
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