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normal operating temp for a 98 catera


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I was wondering where the temperature gauge should be at normal operating temps. Should it also fluctuate frequently at idle moreso when driving?

I have a 98 catera and wondered what everybody else's temp gauge does.


I don't know if there are any Catera owners on this site, so I'll give you my input until someone "in the know" comes forward. :) Normal operating temperatures should be in the 200-230 *F range. The fans are electric, and if you don't have the A/C on, they're probably not turning. They'll turn on when the coolant gets hot enough (probably around 225-230 *F), and turn off when the coolant cools down. This is the fluctuation you see at idle. When you're driving you have a ram-air condition through the radiator and will have very little temperature variation.

Jason(2001 STS, White Diamond)

"When you turn your car on...does it return the favor?"

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Catera has very active electric fans that frequently stay on for a while after the engine is shut off. The fans seem to run a lot even without the A/C being used. I'm pretty sure that the "normal" operating temperature is just above 200F, probably a tad below 212F during driving and maybe 220-230 in stop-and-go. My wife is at her second Catera (1998) and both acted the same. It came with the orange dex-cool coolant.


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