Question about 1990 Cadillac Deville

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Have codea 12-19-30-41-52-91 f10-32 please help the car i have is a 1990 cad sedan de ville 4.5 engine

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ECM Trouble Codes
12-Distributor signal fault
19-Fuel pump circuit fault (short)
30-Idle speed control (isc) motor rpm out of range
41-Camshaft position sensor (CMP) or circuit fault
52-Electric control module (ECM) reset
91-Park neutral position switch or coicuit fault

BCM Trouble Codes
10-Outside temperature sensor or circuit fault
32-Electronic control module (ECM) to Body control module (BCM) fault loss of communcation

Source: Haynes repair manual


Posted on Dec 12, 2009

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Cmp sensor or could it b something else.

Posted on May 28, 2011

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Posted on Jan 02, 2017

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I took the bulb out of the front turning signal socket in a 1990 cadillac sedan de ville and it appears to be good. There was a piece of metal(possibly the ground?) That was broken. Is this the...


You could use a test light or a bare piece of wire to act as a temp ground to find out. If it is a bad ground in the socket, the socket would need to be replaced.

May 12, 2013 | Cars & Trucks

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On a 1991 cadillac seville where is the fuel relay


They are in a box in the engine compartment, or behind a panel on the firewall behind the engine.
My sedan de ville has them on the firewall behind the panel on the passenger side. You remove the panel with a couple of large round nuts.

Jan 11, 2013 | Cars & Trucks

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1989 Cadillac Sedan De Ville engine stalls when air is turned on...tries to take off when stopped at stoplight..sometimes dies while driving..


It sounds like the idle compensation circuit for the engine is dirty or faulty. Have your car checked at a shop. have them check the idle air motor for dirt or malfunction. It could be that it only needs to be cleaned or replaced.

The compensation circuit adjusts the idle/slow speed of the engine. The air conditioner puts a load on the engine and this circuit adjusts the engine speed to compensate. Also, when the car is cold this circuit adjusts the idle speed to prevent stalling and help the engine warm up faster. I hope this information helps you.

Aug 16, 2010 | 1989 Cadillac Sedan DeVille

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Looking for the firing order for a 89 Caddy De Ville 4.5 engine


Here is the firing order for that vehicle and engine.


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Jul 25, 2010 | 1989 Cadillac Sedan DeVille

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1992 SEDAN DE VILLE CAD...AC BLOWER MOTOR FAN HAS STOPPED AND THE ENTIRE DIGITAL DISPLAY OF THE TEMPERATURES AND SETTINGS ARE NOT THERE. AND THE MPH DIGITAL READOUT IS GONE..WINDOWS WORK, LIGHTS, OK,AND...


Since replacing anything could cost hundreds of dollors, would you really replace it from a suggestion or would you prefer to get it diagnosed properly. It gets expensive when you just throw parts at a car. This really need to be diagnosed properly ( hands on with the proper equipment).

Aug 30, 2009 | 1992 Cadillac DeVille

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Electronic climate control


I've not done this for the reason you speak of, but I was told to disconnect the battery from both terminals and hook the 2 cables together and leave it that way for 30 minutes making the computer forget what it was doing. Reconnect the battery and find if it worked for you. There's no power anywhere when the battery is disconnected, so no harm is done. This method turned out my ABS light when nothing else worked after repairs were done.

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Problem starting


Battery terminals like bad or corroded. Replace, and you should be fine.

Jun 09, 2008 | 1990 Cadillac Deville

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