Replacing Engine Temperature Sensor - Saab 9-3SS Bulletin Board - Saabnet.com
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My wife's car threw a CEL yesterday. My code reader identified it a "Out of Range Engine Coolant Temperature Reading" or similar. 14 years old, 110K miles, 2.0T, most likely culprit is a failed coolant temperature sensor. Local AutoZone had one in stock.
Sensor is located on the top of the engine, right hand side, just beneath the plastic engine trim piece. Easy access for once - or so I thought. Even though the sensor is easy to see and touch, there is a small metal tube, possibly the pressurized fuel line, that prevents removing this sensor with a standard socket, or combination wrench, or my special Cummins diesel engine valve train adjusting wrench which works so good for removing this sensor on my 9-5 and Viggen.
Naturally, SAAB sells a special wrench for just this task. I realized I needed one of those cheap stamped steel plumbing wrenches made out of tubing for this task. Unfortunately 3/4-inch is not included in the set of such wrenches sold at my local ACE Hardware. But this size is included in the set of cheap stamped steel spark plug wrenches made out of tubing that they sell.
FYI to help anyone else who needs to replace this sensor. A thin-wall 19mm or 3/4-inch socket may also work.
2008 9-5 Aero Sedan, sold at 227K miles
2006 9-3SC 2.0T - Wife's daily driver
2000 Viggen Convertible - Summer Fun Car
1964 Quantum IV Formula Car - Retirement project
2000 9-5lpt Sedan, sold at 318K miles
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