i think my 95 rins high. my coolant temp is usually around 218-225 degreese. I think thats high though... when the temp gets above 220 at an time its usually time to worry... or at least that what i was told by people who build high-po motors
Mine was running hot when we first got her(220-225), we thought the fans weren't coming on, so hubby hooked up a toggle switch, and it brought the temps down to 205. But I took her out yesterday and the fans kicked in by themselves, and she seems to stay cooler now.
Those temps are to the high side of normal operating range. The things are designed to run considerably warmer than older engines were for a number of reasons. A lot of times if you make them run too cool they will run pretty bad some of the vacum controls are temp. sensitive and won't function till the engine is at full operating temperature!
It's pretty much all the engines after the mid '80s that tend to need the higher temps. I've read some about it but I didn't retain much other than it's needed to help with more complete burning of fuel and such.
The need for running warm isn't really a new thing. Back in the 60s, cars had 195*F thermostats, just as they do today. This is for a variety of purposes -- most notably engine wear and emissions. Did you know that engine wear increases exponentially as the engine temperature decreases? Those people that put 160*F thermostats in their vehicles aren't doing themselves (or future owners) any favors...
The reason the temperature will climb higher in your Eldorado is because it's TFWD, with electric cooling fans. The fans aren't programmed to come on low speed until 229*F (and high speed at 234*F). If you have the A/C off, the only airflow you get through the radiator is ram air from the car's movement. At most speeds, this is more than enough to keep the coolant cool enough. But when you stop at a light or a drivethru, you're getting no air at all through the radiator, and the temp will rise...until the cooling fans cool it back down. It's all part of the normal cycle.
The reason your old Fleetwood ran cool all the time was because it was RWD and had a belt-driven fan, so the fan was always turning, and always pulling SOME air through the radiator, even at idle. So the engine never warmed up. If you let it sit long enough, for HOURS, it may have eventually started to warm up because it's not much airflow at idle. But a TFWD car, with electric fans, will idle, theoretically, forever because of the ability to pull lots of air though the radiator, even at idle.