Question about 1986 Cadillac Eldorado

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The engine control module for the cars computer.Is it under dash or behind the glove box for its computer

It has a engine control module that plugs into the computer for the car. I am wanting to know where the computer and module are located at.

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  • Cadillac Master
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No , it has a PROM that plugs into the ECM ! The PROM - program read only memory chip . it has the engine operation information programed on it ! The ECM is located in Front seating area, passenger side, under dash, above passenger side of glove compartment cavity, mounted on firewall !

Posted on May 15, 2015

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cadman000
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SOURCE: where can i find my Flasher on my 1993 cadillac sedan deville?

Check on the L/S lower dah panel . Its mounted om n a spring clamp

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cadman000
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SOURCE: 1992 Cadillac Coupe Deville blower fan runs all the time

The BLOWER MODULE is located on the A/C EVAPORATOR housing located UNDER THE HOOD passenger side firewall. Has 2 electrical connectors. Mounted with 4 screw bolts.Hope this helps

Posted on May 21, 2009

emissionwiz
  • 76846 Answers

SOURCE: my car is wired a little diffferent. there is a relay that controls, my horn,radio,and light for glove box, trunk, and under the hood. witch one is it. They aren't numbered.

One relay does not control all this.

Posted on Jun 05, 2012

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Were is the ecm located?


  • REMOVAL & INSTALLATION
  • Print


    OPERATION

    When the term Electronic Control Module (ECM) is used in this guide it will refer to the engine control computer regardless that it may be a Vehicle Control Module (VCM), Powertrain Control Module (PCM) or Engine Control Module (ECM).
    The Electronic Control Module (ECM) is required to maintain the exhaust emissions at acceptable levels. The module is a small, solid state computer which receives signals from many sources and sensors; it uses these data to make judgments about operating conditions and then control output signals to the fuel and emission systems to match the current requirements.
    Engines coupled to electronically controlled transmissions employ a Powertrain Control Module (PCM) or Vehicle Control Module (VCM) to oversee both engine and transmission operation. The integrated functions of engine and transmission control allow accurate gear selection and improved fuel economy.
    In the event of an ECM failure, the system will default to a pre-programmed set of values. These are compromise values which allow the engine to operate, although at a reduced efficiency. This is variously known as the default, limp-in or back-up mode. Driveability is almost always affected when the ECM enters this mode.


    REMOVAL & INSTALLATION

    See Figures 1 and 2


    0900c152800a7f96.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 1: ECM mounting scheme-except 1996 models


    0900c152800a7f97.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 2: ECM mounting scheme-1996 models
    The ECM is located in the passenger side footwell in the kick panel up to 1996. In 1996, the ECM is located in the engine compartment next to the battery.

    1. Disconnect the negative battery cable.
    2. Disengage the connectors from the ECM.
    3. Remove the spring retainer off and over the rail of the ECM on vehicles except 1996.
    4. Slide the ECM out of the bracket at an angle.
    5. Remove the ECM.

    To install:
    1. Install the ECM into the bracket.
    2. Install the spring retainer (except 1996) and plug in the electrical connectors.
    3. Connect the negative battery cable.

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    Hi there:
    On 1992 Cadillac Deville 4.9L SFI 8cyl the Engine Control Computer is located in front seating area, passenger side, under dash, mounted behind glove compartment cavity on firewall.

    2_15_2012_6_41_22_pm.gif

    Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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    I'm sorry, but Jeremy W. is incorrect. The engine control module for a 1991 Toyota Camry is located under the dash belw the center console. (See Diagram)

    10_16_2011_12_44_06_pm.gif

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