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The coolant temperature gauge is acting up.

4.2K views 1 reply 2 participants last post by  erik2282  
#1 ·
I have a 2001 Nissan Altima, and as I was driving, I noticed the temperature gauge hangs low. It doesn't get up to "warm" temperatures even when driving for quite a while. It will bobble up and down like it's not reading anything. Anybody know what the problem is? I guess its the temperature sensor and not a thermastat problem. Because if it was running open loop on a thermastat, it would throw a check engine light wouldnt it?

Thanks for reading.
-Viet