TII - coolant temp false reading?
10-25-09, 03:58 PM
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TII - coolant temp false reading?
Hi folks,
Last week during an engine startup during a cold New England morning, I noticed that my temp gauge spiked to the danger level within less than 1 minute of the engine running. I immediately shutdown the engine. I then re-started the engine and the temp was still running at max, but there was no heat coming out of my vents so I assumed it might be a false reading. I waited a few minutes, and started the car again. After a few minutes, the coolant temp climbed to normal operating temperature. This has now happened a few times over the past few weeks. I'm assuming I might have a problem with the coolant temp sender? Many thanks!
Last week during an engine startup during a cold New England morning, I noticed that my temp gauge spiked to the danger level within less than 1 minute of the engine running. I immediately shutdown the engine. I then re-started the engine and the temp was still running at max, but there was no heat coming out of my vents so I assumed it might be a false reading. I waited a few minutes, and started the car again. After a few minutes, the coolant temp climbed to normal operating temperature. This has now happened a few times over the past few weeks. I'm assuming I might have a problem with the coolant temp sender? Many thanks!
10-25-09, 04:30 PM
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I believe normal operating range is 1/2 (middle) of the gauge reading. Also I don't believe my problem is thermostat related... even if my t-stat was faulty, it would not cause my coolant temp to spike to overheating indications on the gauge in less than 1 minute of start-up idle on a cold morning.
10-25-09, 04:44 PM
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I believe normal operating range is 1/2 (middle) of the gauge reading. Also I don't believe my problem is thermostat related... even if my t-stat was faulty, it would not cause my coolant temp to spike to overheating indications on the gauge in less than 1 minute of start-up idle on a cold morning.
10-25-09, 08:32 PM
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Pull the thermostat out and put the thing back together without it. Then see if the problem comes back in the next few days. You can figure out what to do after that.
If the sensor wire touches gnd that will drive the gauge full range but it would only take about a half minute to do that if not less than that. Kinda hard for the water temp sensor wire to touch gnd though, unless it's really buggered up.
If the sensor wire touches gnd that will drive the gauge full range but it would only take about a half minute to do that if not less than that. Kinda hard for the water temp sensor wire to touch gnd though, unless it's really buggered up.
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