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Old 06-30-2012, 07:55 PM   #1
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So I'm wondering if anyone knows why my thermostat would be normal while driving and idling but when I turn the car off and take the key out it rises all the way above the red line? it only does it if the lights are on after I turn it off, and when I turn the lights off it will stop and stay where it is, it won't go down or up.
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Old 06-30-2012, 08:06 PM   #2
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Quote:
Originally Posted by dray492
So I'm wondering if anyone knows why my thermostat would be normal while driving and idling but when I turn the car off and take the key out it rises all the way above the red line? it only does it if the lights are on after I turn it off, and when I turn the lights off it will stop and stay where it is, it won't go down or up.
Maybe it doesnt like you. Seriously I have no idea, but I know a few people got opinions.
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Old 06-30-2012, 08:48 PM   #3
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Quote:
Originally Posted by dray492
So I'm wondering if anyone knows why my thermostat would be normal while driving and idling but when I turn the car off and take the key out it rises all the way above the red line? it only does it if the lights are on after I turn it off, and when I turn the lights off it will stop and stay where it is, it won't go down or up.
Aftermarket gauge..
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Old 06-30-2012, 09:05 PM   #4
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Originally Posted by sixpac

Aftermarket gauge..
Are you asking if it is or telling me to get one? It's the original one in the dash.

---------- Post added at 10:05 PM ---------- Previous post was at 10:03 PM ----------

Quote:
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Maybe it doesnt like you. Seriously I have no idea, but I know a few people got opinions.
It better like me lol I'm going to have her for the rest of her life
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Old 06-30-2012, 09:07 PM   #5
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I bet when you start the car up, it drops back down to a more normal level, right? If so, it's probably just heat soak against the temp sensor.
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Old 06-30-2012, 09:07 PM   #6
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I bet when you start the car up, it drops back down to a more normal level, right? If so, it's probably just heat soak against the temp sensor.
Yeah it does
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Old 06-30-2012, 09:08 PM   #7
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Gauge going bad or just a bad connection somewhere!..
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Old 06-30-2012, 09:12 PM   #8
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Originally Posted by dray492

Yeah it does
Seems like this isn't such a bad thing, as long as it seems to be reading okay when the engine is actually running. It's probably not an accurate reading when the radiator fluid is flowing.
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Old 06-30-2012, 09:38 PM   #9
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Quote:
Originally Posted by dray492

Are you asking if it is or telling me to get one? It's the original one in the dash.

---------- Post added at 10:05 PM ---------- Previous post was at 10:03 PM ----------



It better like me lol I'm going to have her for the rest of her life
I would say get one..
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Old 06-30-2012, 09:41 PM   #10
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Just a little FYI the actual temp will rise slightly before cooling.. Hence cool down laps for race cars and bikes.
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Old 06-30-2012, 10:03 PM   #11
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Alright thanks for the info everyone.
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Old 07-02-2012, 03:53 PM   #12
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Old 07-02-2012, 04:00 PM   #13
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Well that's just nutty as hell. Did it just start doing that all of a sudden?
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Old 07-02-2012, 04:04 PM   #14
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It's been doing it since I got the car a little over a week ago.
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Old 07-02-2012, 04:08 PM   #15
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You've got to have bit of a short some were!.. That is just weird!..
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Old 07-02-2012, 04:28 PM   #16
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When the car is running, it works fine? Does the temp drop as the engine warms up, or go up as it should?

---------- Post added at 05:28 PM ---------- Previous post was at 05:21 PM ----------

Even though the link here is for a different car, our cars should be similar. Check it out...

http://www.howstuffinmycarworks.com/...mp_sensor.html
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Old 07-02-2012, 05:20 PM   #17
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Quote:
Originally Posted by Azure
When the car is running, it works fine? Does the temp drop as the engine warms up, or go up as it should?

---------- Post added at 05:28 PM ---------- Previous post was at 05:21 PM ----------

Even though the link here is for a different car, our cars should be similar. Check it out...

http://www.howstuffinmycarworks.com/...mp_sensor.html
yes, it works as it should while its running. I will check the link out thanks

---------- Post added at 06:20 PM ---------- Previous post was at 06:18 PM ----------

Once its cool and I start it the needle starts at the bottom and rises like normal
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Old 07-02-2012, 09:05 PM   #18
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Re: whacky thermostat

I haven't really paid attention to my 86 to see what it does, but I do know some car's gauges will go to the upper end of the spectrum when they are switched off. As long as the gauge is functioning normally with the power on I wouldn't be to worried about it.
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Old 07-02-2012, 10:43 PM   #19
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Originally Posted by Trojan Horse
I haven't really paid attention to my 86 to see what it does, but I do know some car's gauges will go to the upper end of the spectrum when they are switched off. As long as the gauge is functioning normally with the power on I wouldn't be to worried about it.
Yeah its been running good so for now I won't worry about it.
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Old 07-02-2012, 10:47 PM   #20
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Re: whacky thermostat

Mine does this too but I thought it was because it was an analog guage and not a digital. Works great when running and with power on but not running so who knows...
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Old 07-02-2012, 11:13 PM   #21
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Ya mine does on occasion too. Ill get in see it at top of guage, but as soon as turn key to prime pump drops to bottom and works.
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Old 07-02-2012, 11:42 PM   #22
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Originally Posted by wc3john
Mine does this too but I thought it was because it was an analog guage and not a digital. Works great when running and with power on but not running so who knows...
Well its nice to hear I'm not the only one this happens to.
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