20 Most Recent 1992 Cadillac DeVille - Page 5 Questions & Answers

Try jumpstarting with another car.

it is the thing that lets petrol into the inlet manifold then it goes into the combustion chamber, basically. These have an amount of sensors on them. one of them may have been knocked or loosened itself

idle speed controller which sits under driver side dash (RHD)

First let's define some terminology. The job of the starter motor is to "crank" the engine, if it does this, weather the engine runs is going to depend on the fuel system and the ignition system and good compression. Try this: with one hand, hold the key it the "crank" position, with your other hand, move the gear shift (slowly)from park to reverse to neutral to drive. Make sure you foot is on the brake as it may start in gear. If it starts while doing this, you have a bad neutral safety switch. Also, It wont stay running when you crank it by jumping the starter if the ignition switch is off. Try doing it again with the key on. If it starts with the key on, and you jumping it at the starter, you probably have a bad, or out of adjustment, ignition switch. If it does not start, with the key on and cranking by jumping the starter, then you probably have a fuel or ignition problem. Try the above and get back to me. I can walk you through how to check for fuel and spark if it still wont run.

error code E85. Throttle body and butterflies also The ISC is the Idle Speed Control clean them out then take off the battery negative lead and leave off for 2hrs. reconect and the code should be gone.

check the wiring to the unit.... failing that the unit has fail.

If you can start it with starting fluid, then it is a fuel issue. When a vehicle is stored for a long time, it can cause varnish.

if you have been starting it up and not running it for awhile you have sooted up the plugs so no spark is get thought. clean the plugs.air lines etc it will all need cleaning out. if you going to store a car take the battery off and just leave it like that until you are going to use it starting and running the engine every now and then will do more harm to the engine than good. alway before you use the car change the oil's as the oil can get old just sitting there and parts were the oil don't sit will rust. alsay turn over fist by hand a few times as this can clear the rust in the engine without doing damage then change the oil before starting engine. I have done this befor with a daimlers for years and never had a problem and these have not been used for over 30years.

EGR systems are prone to trouble, because it recirculates exhaust gases back into the manifold, the EGR valve gums up with carbon from the exhaust gases, if it is the type you can remove, remove the valve it generally can be cleaned with carb cleaner and replaced.

You misunderstand code, there is a VSS (Vehicle Speed Sensor) it's problem is that it is giving an intermittent signal. The VSS is what tells the speedometer how fast you are going (among other things) it is located in the transmission (transaxle). '91 is right around the time when they were going away from mechanical speedometer cables so it may or may not have one depending on the production date. If it has a cable the VSS is built into the speedo gear housing. If there is no cable, the VSS is in the same location on the tranny it just has no provision to drive the speedo cable If you have the new part it may help you to find it on the car but it should be in the left side of the transmission housing near where the left drive axle goes into the case. The VSS gear actually drives off of the very end of that axle inside the gear case. I think it is a 10mm head bolt that retains the VSS. Hope this helps, best of luck.

Carefully check to make use it is from the sensor and it is NOT from the freeze plug. Order a coolant temperature sensor and make sure you has white Teflon tape on hand before you start the job.

sounds like bad head gasket or intake manifold need compression test thing that scares me is oil in water resivoir