![]() I now notice the 20-30 second low coolant light comes on more often than the previously noticed 6 week intervals. But for the past few weeks, I have temporarily come to visit my mom in the Pacific Northwest. My 1996 SW2 has "lived" in Las Vegas dryness it's entire life. I've checked the levels.no problems and the temp gauge stays right where it ought to stay. I've mentioned, in the past, that my low coolant light blinks for 20-30 seconds at almost regular 6 week intervals. Ok.if someone else can bump an old thread I guess I can, as well. Note that driving with a stuck open t-stat will reduce heater output, hurt fuel economy, and may shorten O2 sensor and CATCON life due to the resulting rich fuel condition. Has yours been checked and replaced if the old type? In very cold weather with the heater on full it may not rise much.Īll this assumes a properly working ECTS. then it will drop slowly until the fan turns off. So if the car is moving slowly or stopped the temp gauge will rise gradually until the fan turns on. With the A/C off the fan comes on only when the ECTS indicates coolant temperatures above around 221 F (i.e., temp gauge near 3/4 scale, slightly above on '95 and earlier, slightly below on '96 and newer). With the A/C on (and air temps over about 40F) the radiator fan should be on at all times. A working t-stat will reduce flow to maintain the engine at normal operating temperature. Air passing through the radiator (as a result of forward speed or fan operation) removes heat from the coolant in the radiator, and can cause coolant temperatures to drop well below 1/4 scale on the gauge depending on the air temperature, air flow through the radiator, and engine load. normal operating temperature appeared to be slightly below 1/4.Ĭlassic indication of a stuck-open thermostat. ![]()
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