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Cadillac Repair/1990 Cadillac Deville insturment panel
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Question
Hello I have a 1990 Cadillac Deville. I just bought this vehicle and it has very low miles and is very clean. It reads liters and Celsius instead of gallons and Fahrenheit. I know I was told there was a e/m button to switch it but I have looked for two days and I can not find one anywhere. Is there a way to change it over without the button? Also my 25 amp fuse for the instrument cluster (including the speedometer, fuel center and ac/heat controls) keeps poping on me. I do not understand what the problem is because some days I can replace it and it doesn't go out for hours and other days it pops as soon as I change the old one. All help on these two questions is very appreciated. thank you Monte flemmings
Hello,
Its been so long (20 years) since I owned one of these, but the E/M switch should be a push button on the cluster which operates like a tripometer. I remember it being on the right hand side of the cluster. A black button with white writing. If the owners manual is in the glove box, it will show you where it is.
As for your fuse issue, do not what ever you do put a larger rated fuse because you will have a fire. I think this car is too old, but you can check at http://www.alldata.com to see if you can find the car, pay $30 for a one year download and get the factory service manual. If not, you will have to try Craigslist or Ebay. You need the factory service manual and nothing else to find out what all is on that circuit and you will need to eliminate things on that circuit until the fuse doesn't blow for you to find the actual problem.
Electrical problems can be very simple and they can be very complicated. Even if you send it out for repair, you will most likely need to let the tech use the manual because chances are that they don't have manuals for 20 year old cars. Any manual you find in the book store is too general for this and you need to look at the exact schematics and diagnostic flow charts for the specific vehicle.
http://www.autotheftexpert.com
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Rob Painter
Expertise
Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?
Experience
Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.
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