20 Most Recent 1996 Cadillac DeVille - Page 4 Questions & Answers

look under drivers side lower outside corner it will be a black plug with a flat tee you may have to search for it its well hidden but its there turn counter clock wise to open some might stick so you might need a pair of vice grips to turn it and pull back on it.make sure motor is cool ,cuz it just comes splashing out. I know you didn't ask but if you have a northstar motor take any heating problems VERY seriously I owned 2 and a lot of overheating problems and 1 head gasket later sold them both.

It should move freely with the transmission in neutral and parking brake released. The parking brake may be stuck engaged - it should release if you put the transmission in drive first (manually check that the parking brake pedal has released).

first check to see if the blend door motor is working if it is then the temp module may be the culprit , also check the heater hoses to see if they are hot on both side the inlet and the outlet you can do this by feeling them . let the car heat up to operating temperature then feel both hoses if one is cold and the other on is hot this indicates a flow problem , if this is the problem check the temperature of the engine , if the engine does not reach operating temp then replace the thermostat and then recheck engine temp , check the flow of the heater core , you can do this by pulling the hoses off and use a garden hose to push water through the heater core " do not turn the hose on high "

Replace the fuel pump

open the drivers door and look there on the side if the dash, open the glove box and look in there, also look under the hood

The warning light means the system is disabled due to a problem. The system would need to be checked for codes.

No, the oil level sensor may be going bad, or have a loose connection. Check your oil level, and look beneath the car where you park for oil spots - if there are spots you have a leak. Some oil in older cars will get past the oil ring in the cylinders and be burnt in the cylinder - but usually you will see blue smoke coming out the exaust if that's happening.

You will need to buy new head bolts and I would recommend getting a repair manual , the torque is done in degrees . First step all 11 m bolts torque to 22foot pounds then 60 degrees go back to the first bolt then torque another 60 degrees and last do this one more time that will give you a total of 180 , The 6m bolts is 106 inch pounds , you do really need a repair manual because their are certen steps out lined that need to be followed . Good luck take care because you are tightening these bolts into and aluminum block and they are known to pull threads when pulling out the old bolts , you will know if this has happened because you will see the materiel in the bolt threads

Clean intake

see last answer

Driver side under hood

Sounds like the Idle air motor is not working , Possible throttle plates stuck , do you get a check engine light or service engine soon light if so pull the codes and let me know what they are and we can go from their , this will allow us to diagnose the problem better

Could be many problems,dirty fuel filter,dirty MAF sensor,vacuum leak,exhaust leak,oxygen sensors.PVC valve open.Put good fuel cleaner to tank change air filter and fuel,Clean MAF sensor.Replace PVC valve.Any codes?

Fuel trim lean, banks 1 & 2. That's a pretty strong indication that you should check the fuel pump pressure at the fuel rail, and check the fuel flow rate while you're there. There's a good chance that your fuel pump is just about ready to be replaced. If you see good pressure & flow rate, run a couple of jugs (not at the same time) of carburetor & fuel injector cleaner through the gas tank. It's possible that all your injectors have just gotten so dirty that they can't give you a full-rich mixture. You'd best do it fairly soon - the engine is running lean, and it can't tolerate that for any great long time without some damage.

The anti theft only keeps the car from starting, not moving. Make sure the brake lights work, check fuses.

this could be a electronic problem in the coil/s ,distributor module or injectors. Run the fault codes.

what component are you trying to find the ohms SIGNALfor?

Best to refer to service manual.

Code 36 for most Cadillac models means the egr sensor is not giving the correct signal. The sensor is telling the computer the egr valve is open or closed when it should not be. The valve and the sensor would need to be tested.