It is very possible the car has been babied alot, hence the feeling of lack of power.... open it up for awhile and it would run alot better.
That might be. I can tell it was taken care of, it was very clean inside and out and ran beautifiully. It wasn't that it had a lack of power, it felt powerful, but all of the power was in the top end of the powerband...not particularly where I like it. I much prefer the torquier LD8 Northstar I drove in the '97 deVille, 95 Eldorado and Addison II's 94 SLS.It is very possible the car has been babied alot, hence the feeling of lack of power.... open it up for awhile and it would run alot better.
To be perfectly honest, the 300hp L37 Northstar didn't meet my expectations, I was expecting more in the way of top end power. I nailed it at 60 and it didn't feel all that much quicker than my 4.9, not to say that the L37 isn't fast, it is, but it's not the god like motor that some make it out to be, I honestly think the '98 deVille I drove a while back was faster when I'd nail it from 60MPH. That one jumped from 60-80, this one took about 2-3 seconds to get from 60-70..not impressed. I nailed it from a stop, and it was able to spin the tires at about 35 mph, which I thought was cool, but the only way to get to that power is by winding it all the way out, which isn't my cup of tea. I like lots of accessible, low end power. So obviously, if I was to ever get a Northstar Cadillac, it would be a LD8 275hp version. I really liked that motor in the '95 Eldorado I drove, it seemed like it had ~50 more horsepower than the LD8 motor..
There is a possibility that both the springs and shocks/struts were worn. The CVRSS however, is soft by nature, and changes depending on the aggressiveness of the driver. Keep in mind that the demographics for the Eldo were men above 55, who enjoy the smooth Cadillac ride. The STS has younger demographics, and possibly a firmer, less-floaty ride.Suspension: 7.5/10.
This car is tuned too soft for aggressive driving purposes. If you get in it hard going down a curvy road, the car starts to float slightly which is really, really unnerving. Now granted, it doesn't float as bad as '92 Brougham, but it's no "canyon carver". But if you drive it more normally, it's fine. It's got an awesome ride for a sport coupe though, as good as my '92 deVille, if not smoother on the interstate. It would make for an awesome road trip car.
Worn struts/shocks do not throw codes. The electronic sensors and the valve throw the code, but nothing inside the shock/strut to give feedback as to whether they work or not.That's what I was thinking too, the struts were worn, but it never said "Service Ride Soon" or anything like that. No lights or codes at all.
As for the acceleration, it was quick, maybe just as quick as the 93 STS I later drove (and was VERY impressed with) maybe it didn't feel as quick because this '99 was much more hushed and isolated than the '93 STS.
That makes sense though about the tranny taking a while to learn the shift points. I only had it out ~20 minutes so it wouldn't have adjusted that quick.