Cadillac DeVille

try changing your coil as well as your secondary coil make sure there is gas and spark drive safe

It probably isn't a relay- what you will most probably have is bad battery connections, a bad ground, or bad connections/w fusible link down on the starter.

If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.

im having the same problem i just bought a 2000 deville and i have been getting the same thing i cant find a answer yet but im looking i think mine has to do with the o2 censor but not sure

short circuit in the circuit

sounds like the factory anti theft system is armed. 2 ways to properly disarm---either with the factory remote pushing unlock or turning either front door outside lock with the proper key. If you dont have either, you must be the thief.

have a trim shop replce the elements they allways break

disconect reconect computer should reset

drill the lock out

Blue smoke, the valve seals may be leaking; white smoke may be condensation build-up in exhaust pipe; black smoke may be too much gas delivery at start-up.

You can find several relay switches on your 1990 Cadillac Sedan Deville. Most relay switches will be in the fuse box. The relay switches will be in the third column of the fuse box.

My understanding is there is a defect in the gas tank that causes the float to stick or get blocked when there is about 5 gallons or less in the take. The only sollution I have seen is to replace the fuel tank.

Deville Touring Sedan?

There are 2. one under the dashboard on the right.The fan relay is the second from the bottom on the left. There is a other one under the Hood. There are three relays to your right when you open the hood(behind the battery) one is for the fan, but I don't know which...Have the same problem, fan will not stop running, i think the relay is stuck.

Good luck!

Leslie

If you tap on one of the 3 relays lightly with say a wrench then that might clear it up; worked for me.

under the plastic panel on the bottom of the dash is a fuse and relay area on the passenger side kinda up behind glove box

I have a 98' cadillac deville and it should constantly read around 197-201 when you are driving. It will definitely increase when you come to rest: example at a street light. something is definitely wrong and should be checked.

It is possible to remove the oil pan from a 2003 Cadillac Deville without pulling the motor out. Since the Northstar engine is mounted sideways for front wheel drive, there is no suspension in the way. However, the major problem to deal with is the exhaust pipe which is bolted to the front exhaust manifold and travels under the oil pan and over the transmission. I got it out with some difficulty, but at least didn't have to pull the motor out of the car. Here is my procedure:

1. Safety first - ensure the front of the car is jacked up and on jackstands, with rear wheels chocked. Install an extra jack under car in addition to the jackstands as a safety backup.

2. Drain oil & remove filter.

3. Remove the 13 or so 10mm bolts from around the oil pan. Some are more difficult than others to get to but all can be removed.

4. Remove the single 13mm bolt from oil pan corner. This is easily reachable but extremely difficult to turn due to the angle of access. I tried using a 1/4" universal joint on my ratchet but to no avail. I finally was able to loosen it by taking a 13mm box end wrench and bending it to a 90° angle and turning it with my vice grips a small turn at a time.

5. When last bolt is out of oil pan will drop slightly since there is no glued on gasket - only an o-ring.

6. Remove front bottom plastic shroud that covers the space between the radiator & front cross bar.

7. With this new access, remove the 2-10mm bolts that bolt the ehaust pipe to the front exhaust manifold.

8. Going farther back under the car, remove 2 bolts to the rear exuaust manifold & 2 bolts that connect the muffler.

9. Exhaust pipe will now move slightly but still not give you enough room to remove the oil pan.

10. Remove both engine motor mounts: 1 x bottom 21mm nut, 2 x bottom 19mm nuts, 1 x side 18 mm nut. Not for the side bolt you;'ll have to remove the nut from the inside, as the outside has a hook type bracket welded to it which makes it impossible to spin. I used an 18mm open end wrench from the bottom (passenger's side) & top (driver's side - remove air filter housing). Use crow bar to press motor mount down to remove off of studs & work it out being careful not to damage the break lines.

11. Remove bottom engine mount nut in front cross bar & rear portion of transmission.

12. With 2 spare jacks, jack up motor as far as it'll go without raising car off the jackstands. Use a piece of pipe or 2 x 4 on jacks to reach motor, allowing room away from oil pan.

13. Double check jacks to ensure engine won't fall down & crush your fingers when working out oil pan!

14. Work oil pan towards passenger side of vehicle & drop down as far as it'll go.

15. Remove oil pump screen tube assembly. It is held in place with an 8mm bolt (tube connection) and a 13mm nut (bracket).

16. Now that the oil screen assy is not in the way, work the oil oan towards the ront of the engine, angling down as you go.

I am in the process of replacing the pil pump & screen due to some radiator additive (head gasket repair or "liquid glass" ) that my dad inadvertanly added to the crankcase, since the oil fill is in front of the radiator fill. Fortunately he figured out what he did and didn't allow the stuff to circulate through the engine, which would have killed it permanately. He did, however, turn it over a few times (before realizing what happened and them immediately changed the oil) which caused the stuff to solidify in the oil pump and now he is getting a poor oil circulation warning on the computer. I will add more comments once I complete working on the car.

Thanks, ms 2/15/10

under the fuses beneath the hood. look back and it has a cover on it that you have to remove. then 2 fuse boxes. relays are beneath there. horn relay should be on far right.

I think the best answer is, YOU DONT. My warning message has come on at least 10 times since I bought the car a 2001 Cadillac Seville STS. It just shuts off and doesnt come back for months. Could be electrical problem, as my gas guage is never accurate and goes up and down on its own, had all instruments not work sometimes and then just start working after disconnecting the battery and reconnecting.

Lora material used to made pin and bushes

your thermostat is located on the engine where your lower rad hose goes in your engine two bolts hold the housing on . no gasket sealer is needed

According to my Cadillac dealer, the 98 DeVille holds 8 full quarts

7 1/2 quarts to the center of operating range only add 7 1/2 at oil and filter change!!

The check engine light will come on. And u might see a lower mpg rating

you should be able to get a replacement title by contacting the state. Often you can sign a state form that transfers title. Check with YOUR state to see the local laws.

Three