As some of you might know by now, I recently got an '87 in very good shape (other than the fact that it was wrecked and totaled, and then repaired, which is how I came to buying it...). Pretty much everything is in working order, but I took into to my local shop to give it some love and general maintenance, as I'm not as mechanically gifted as some of the other fellows here...
One of the things I asked them to look at was the temperature gauge. It only got up to the first line on the gauge spectrum, which I would say it's about 10% of the way, even though it seemed to be warming up fine, as I could tell by the heat coming out of the vents.
They replaced the temperature sensor, and now the gauge does this weird thing where it will either be stuck all the way on the "C" side, or all they way on the "H" side, randomly. Sometimes it will be stuck on "C" for a while, and after driving for 20 mins or so, it will quickly go all the way to "H" and stay there for a while, until it decides to come back all the way back to "C"....
The guy at the shop was stumped by this, and because they were really busy and couldn't do anything about it at the time, we agreed that I should keep an eye on it, since the engine seemed to be running fine (not overheating), and if it kept doing it after a couple days to bring it back.
The tech said that since we replaced the sensor, the sensor was not the problem, and since information was getting to the gauge, the wire was not the problem, so maybe the gauge was the problem...
What do you guys think? Have you seen this happen? Is the tech right that it might be the gauge that is the problem? Is it possible that we got a faulty brand new sensor?
The tech also said that it might "just work itself out", that maybe there was an air bubble in the coolant (from him changing the sensor), and that it would start acting normal after a while, maybe...
Obviously he's not sure what's going on, I'm hoping one of you guys might know!
Thanks
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