Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.Due site policy we are only allowed to address one topic per question. If you can tell me which topic you wish to address in this post I will try and help you get it resolved. Let me know and we can work from there.
So you wish to deal with the digital dash or the fuel concern?
They are not likely related and any money you have paid remains in your account as your, we are not paid unless you rate the service. No money has been deducted.
You are correct to some degree, a bad key will disable the starter to keep the car from starting, it will not affect the fuel pump. You can check the key with the test steps in the link below. Copy and paste the link to your browser to open and view it.https://dl.dropboxusercontent.com/u/104923897/Key%20test%20Dec%2022.pdf
The fuel pump should get its power from fuse 6 in the relay center behind the glove box. Start first with making sure its not blown. If its blown it will keep the pump from coming on.
Yes it should have a fuse box behind the glove box and you should be able to access it through the glove box. See the wiring diagram in the link below. The #6 fuse feeds the oil pressure switch which sends power to the fuel pump. Copy and paste the link to your browser to view the diagram.https://dl.dropboxusercontent.com/u/104923897/Fuel%20pump%20diagram%20Dec%2022.pdf
Let see if we can get the fuel pump running first.
Okay, Im here if need be.
The diagram shows the fuse to in in the relay center, do you have one perhaps out under the hood on the passenger side at the firewall?
I have also enclosed a different wiring diagram, I sent you the one for the 1990 , see the link below for the 1991 which is similar . Both have the same fuses.https://dl.dropboxusercontent.com/u/104923897/fuel%20pump%20circuit%20Dec%2022.pdf
All indications are showing it under the dash on the right side on the Fleetwood , have a closer look
That what the diagrams are saying yes, right end of the dash underneath.
Due to the age of the car there are no diagrams that show exactly where it is but I can assure you you do have a relay center just as shown in the wiring diagram I sent you.
Okay good luck with the hunt.
If you have power at the fuse then check and see if you are getting key on cranking power at the fuel pump. The fuse feeds the fuel pump through the oil pressure sending unit, check the gray wire at the fuel pump while cranking the engine and see if you get cranking voltage.
You may be able to access the power wire in the harness leading to the tank. Start there to see if you have key on cranking power.
Yes it should with the key on.
What is the fuse number and its location?
That may very well be your problem then, it power the computer system as well as the instrument cluster. Are both side of the fuse dead?
Okay then if you can find the cause you are likely going to solve both problem, The problem may be with the fuse panel its self. Can you pull the panel and see if perhaps you have a broken wire on the back side of it.
Most all the power to these fuse comes from the ignition switch. I have to wonder since the column has been changed that the problem is someplace between the ignition switch and the fuse panel.
They run into the main harness. I would be looking at the harness from the ignition switch to the fuse panel. If you not getting power to these fuse then the problem is likely in the circuit from the ignition switch to the fuse panel.
Yes you need to check the circuit from the ignition switch to the fuse panel. The power to the fuses come from the ignition switch.
Im not sure what you mean by what number the EEC fuse is #4 and the power to it comes from the ignition switch through the under hood fuse panel. See the power distribution diagram in the link below.https://dl.dropboxusercontent.com/u/104923897/Cad%201%20Dec%2022.pdfhttps://dl.dropboxusercontent.com/u/104923897/Cad%202%20Dec%2022.pdf
Yes you should have a fuse box under the hood.
There should be one, they do not offer a location but it should match the wiring diagrams.
The under hood fuse panel in most cases is on the driver side under the hood. I do not know any reason your would not be there as well.
The wiring diagram I sent you is for the Fleetwood. I am not bale to locate a diagram for location. If you would like I can open the question back up and maybe someone else has something new to offer.
It may, I am out of ideas . If some one can help you they will post back.
Hi, My Name is ***** ***** for posting your question to just answer. I am a ASE Certified Master Auto Technician with 20 years experience. I am confident we can resolve your problem together.Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resolution.I also try to give all of the information you may need expecting a positive rating.
Are you still having problems?
Can you verify if the pink wire on the ignition switch has power with key in run position?
Also do you have a security light on the dash?
Can you locate the fuel pump relay?
Try to locate fuel pump relay. It is located in the relay center
I am suspicious you have a ground problem
unfortunately due to age of vehicle I cannot get good schematics for a ground location. There should be main ground under dash. large black wire probably loose
It should be grounded to the car body. Since your lights flash with the hazards leads me to a ground problem. Need to resolve before checking for power as the ECM can not transfer the power without sufficient ground.
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Do you still need help with this here?
Let me know,thanks Pete.
Was anything after market installed at all?
Did the issues start after the radio was installed or after the steering column was installed?
If the issues here started after the column was replaced and you have already replaced the electronic ignition switch this sounds like the fault is between the ignition switch wiring and dash or fuse panels.Trace this wiring and see if you locate any wiring or wiring connection issues needing repaired.
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