I have a 1990 Cadillac sedan DeVille turns over but will not start spray starter fluid in carburetor still won't start

SOURCE: i cant find the relay for the door locks on my 1990 sedan deville

Behind RH side of I/P, on relay bracket

I/P = Instrament Pannel

SOURCE: 1999 cadillac sedan deville won't fire to start

you need to figure out if your missing spark at the plgs,or check fuel pressure at fuel rail,you'll need at least 55psi of fuel pressure,but if you have had no luck spraying the throttle body,your probably missing spark

Duane Wong

• 6826 Answers
• Posted on Jul 02, 2010

SOURCE: cadillac sedan deville fuse box location

lower left side on driver's side near the hood release.

Duane Wong

• 6826 Answers
• Posted on Jul 05, 2010

SOURCE: how to change a starter in a 1990 cadillac sedan

First, I would determine it is bad. I have a 1990 Cadillac Sedan Deville, and sometimes it doesn't turn over. But, if I toggle the switch a few times or up to 5 times, it starts to turn over and the car starts.

I have the same problem with a 1997 Cadillac Deville.

If you are set on changing it, here is a picture and instructions on how to test:
Starter TESTING Voltage Drop Test Fig. 1: Schematic of a voltage drop test
NOTE: The battery must be in good condition and fully charged prior to performing this test.

1. Disable the ignition system by unplugging the coil pack. Verify that the vehicle will not start.
2. Connect a voltmeter between the positive terminal of the battery and the starter B+ circuit.
3. Turn the ignition key to the START position and note the voltage on the meter.
4. If voltage reads 0.5 volts or more, there is high resistance in the starter cables or the cable ground, repair as necessary. If the voltage reading is ok proceed to the next step.
5. Connect a voltmeter between the positive terminal of the battery and the starter M circuit.
6. Turn the ignition key to the START position and note the voltage on the meter.
7. If voltage reads 0.5 volts or more, there is high resistance in the starter. Repair or replace the starter as necessary. NOTE: Many automotive parts stores have starter bench testers available for use by customers. A starter bench test is the most definitive way to determine the condition of your starter.
   

SOURCE: My 1997 cadillac deville sedan won't start because

BUFF OUT THE KEY WITH A WOOL PAD TO GET GOOD CONTACT. IF THIS DOES NOT WORK SPEND $20.00 AND BUY A NEW KEY FROM DEALER