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Check engine, low temp, and poor milage... 200

posted by  Smitty on  Sat Dec 27 18:22 CST 2003
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last visit: Sat Aug 9 22:44 CST 2014
[RELATED]

Check your coolant temp sensor, the one that feeds the ECU, not the gauge. And by all means, if your t-stat is more than a few years old, replace it. Have a new one with fresh rubber seal ready, then drain the block down partially by means of the fitting on the passenger side of the engine under the exhaust manifold. Pull off the t'stat cover, and just look at how the old one is oriented (top-to-bottom, not rotationally). If you've drained too much coolant, pour some in carefully until you can see coolant right up under where the 'stat goes. Put the new one in, button things up, and replace lost coolant via the expansion tank. Realize that there will be some air trapped in the block, so let the engine come up to temp at idle (rather than by boy-racer laps around the block), and keep an eye on the temp gauge.






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