I have 98 catera....and this was cause believe it or not by a blown fuse. If I remember correctly this was the automatic transmission control model fuse....I think it was rated at 20 under the driver side steering wheel...fuse relay....
Front rotors are warped and need to be replaced. Could be an out of round disc brake rotor
Your Transmission
If the 1999 Cadillac Catera idles too fast, the cause could be a faulty idle stop solenoid. It may be damaged or it may have become loose. If it is idling rough or seems erratic, the problem could be a faulty EGR valve. Other problems could be a vacuum hose leak or a clogged PCV valve.
Not advisable. Any relay that you could unplug could have a multiple purpose and removing the relay could cause other more serious problems. Len
This could be an indication of a failing crank sensor. GM has issued a recall for this and you shoudl be able to find out more information from any cadillac or GM dealer.
$75 it has a computer sensor inside A locksmith told me that if I got a key from a junked Catera, he could reprogram the chip inside and make a new key for $25.
it could be the belt or pullys check the tensioner assembly
The 1999 Cadillac normal coolant temperature gauge reading should be 180 degrees. A 195 degrees thermostat could be used, causing the temperature gauge to read 195.
Brake pad wear sensor. Could be low brake pads or a sensor that is missing or disconnected.
Interference engine be sure to change your timing belt every 60k miles if not your car is a ticking timebomb with a VERY short fuse it will bend your valves or could cause your engine to seize if the belt fails in any way
It doesn't take freon it takes 134. The fact that you are asking means do not attempt this youself. You could really get hurt. Take it to any reputable AC shop.
My 2000 Catera does the same and that is why I am here today searching for answers..............my suspicion is the immobilizer may be shutting off the fuel and igntion and that module I have yet to find................on another discussion it was said to be in the steering columbe under the lock barrell