engine temp out of whack
06-10-2008, 04:17 PM
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engine temp out of whack I have a 00 z28 (stock) and on long drives on the freeway usually an hour or so the temp goes whacko. It will go from like 209 to 230 in a seconds time and then go back down to the normal temp, it will do this within a few seconds of the last, and yesterday the temp went up to 260 in like 1 second then went back down to op temp, I even ran it with a/c, with heater full blast and just off no difference, I took it in to the chevy dealer and they said no thrown codes or ****, now I am out 100 bucks for them to tell me they dont ******* know?! I am taking it to infineon tomorrow, it did the same thing one time before I got to the track then it was fine. Can someone help?
06-22-2008, 08:25 PM
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Did you have any luck figuring out what is going on? My car is doing the same thing. it will be perfectly fine, running at 210, then all of a sudden it pegs the gauge, then comes right back down. will do it if i am sitting at a light or driving down the interstate. have changed the thermostat and coolent temp sensor and it seemed to help for a few weeks then it started up again. when it pegs the temp gauge i have looked under the hood, and nothing seems out of the ordinary, no steam or anything. still runs like a raped ape. just aggravating
06-22-2008, 09:37 PM
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Thats because there is nothing going on, the temp sensor needs to be replaced.
http://www.rockauto.com/catalog/x,ca...,parttype,2188
06-23-2008, 10:53 AM
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07-12-2008, 06:08 AM
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Excluding the '98 year, all the gauges display a temperature reading of 210 degrees when the actual coolant temperature is between 180 to 226 degrees, once it rises above 226 the gauge will show the actual reading - making the temperature appear to rise and fall by a large margine in a matter of seconds.
07-12-2008, 10:21 PM
#10
Did you have any luck figuring out what is going on? My car is doing the same thing. it will be perfectly fine, running at 210, then all of a sudden it pegs the gauge, then comes right back down. will do it if i am sitting at a light or driving down the interstate. have changed the thermostat and coolent temp sensor and it seemed to help for a few weeks then it started up again. when it pegs the temp gauge i have looked under the hood, and nothing seems out of the ordinary, no steam or anything. still runs like a raped ape. just aggravating