Question about 1984 Cadillac Eldorado

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"Service Soon" light came on in my 1984 Cadillac Eldorado after it came out of an oil change. It is running great. How do I get it to go out?

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  • J. Clayton Opp May 14, 2009

    I retrieved code 27 (TPS function). I tried to clear the code, but would not clear, and the light remains on. Do I have to replace the TPS to get the light to go out. I replaced it 2 years ago, and as I said earlier, the car is running great, with only 52,000 original miles.

  • Anonymous Mar 23, 2014

    Hoe to change the fuse in a 1984 Cadillac eldorado

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  • Master
  • 607 Answers

Push both OFF and WARM buttons together (and hold for 5 sec.) on the A/C control panel. Read what codes appear . It can be cleared by pushing OFF and HI the same way. Hope this helps

Posted on May 12, 2009

  • Eric Heifetz
    Eric Heifetz May 15, 2009

    Just to reiterate, after the code "27 " comes up, THEN push the OFF and HI buttons and hold to get "00". Now back in the late 80's TPS switches flew off the shelves, not saying yours is faulty. IF THE CODE STILL REMAINS, there is a few things I would check . Correlation readings between the TPS and ISC are critical. The readings are in less than 1 volt, so the proper readings and adjustment knowledge are required. If everything reads ok , a new TPS switch might be in your cars future,

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94 Cadillac Eldorado overheating uphill


This actually sounds like your motor is not the problem it sounds as
thougth your transmission is in need of work. if you have flushed your
system also may look at your oil pump system as the change in pitch of the road to climb hills may infact be pulling sludge against the sump
tube screen and plugging the oil pump. these are the only two reasons I can see for this to happen if system only dose this when climbing a hill
.

Dec 07, 2012 | 1994 Cadillac Eldorado

Tip

Cadillac service light 1989-01


Eldorado

2000-01

Turn the ignition to ON. Press the TRIP button on the driver information center (DIC) switch to view various menu choices and stop on OIL LIFE REMAINING. A message will display the percentage of oil life remaining. Press and hold the RESET button on the DIC switch for at least 2 seconds. A message will display the percentage of oil life remaining as 99 percent. The engine oil life monitor is now reset. Turn the ignition OFF.


DeVille,
Eldorado


1999

To reset the service Oil Life Indicator, display the
"OIL LIFE LEFT" message by pressing the "INFORMATION SKIP" (skip info) button. Press and hold the "RESET NO" (no info reset) button until "100% OIL LIFE" is displayed.


Deville,
Seville


2000-01

Turn the ignition to ON, Press the INFO button on the driver information center (DIC) to display ENGINE OIL LIFE. Press and hold the INFO RESET button on the DIC until the display reads 100% ENGINE OIL LIFE. The engine oil life index is now reset. Turn the ignition OFF.


Deville,
Seville,
Eldorado


1997-98

Display "ENGINE OIL LIFE" by pressing the "INFO" button. Press and hold the "INFO RESET" button until the message shows 100.


All Models
except
Fleetwood


1994-97

Press the "INFORMATION" button until "OIL LIFE LEFT" is displayed. Press the "RESET" button until "100" or "0.0 OIL LIFE LEFT" is displayed.


Fleetwood


1994-96

To reset "CHANGE OIL" light, turn the ignition switch to the run position without starting the engine. Fully depress and release the accelerator pedal 3 times within 5 seconds.


All Models,
Seville,
Eldorado


1993,
1994-95,
1994-95

The automatic transaxle message can be reset through the following procedure. If "CHANGE TRANSAXLE FLUID" appears on the Information Center, press and hold the "OFF" and "REAR DEFROST" buttons until "TRANS FLUID RESET" appears.


DeVille,
Fleetwood


1991-93

When "CHANGE OIL SOON" light is illuminated, press and hold the "RESET" and "RANGE" buttons on the Fuel Data Center for 5 to 60 seconds. When the buttons are released, the light will flash four times if it has been reset. If the light comes back on for more than 5 seconds, repeat the procedure.


Allante


1989-93

When "CHANGE OIL SOON" appears on the Driver Information Center, press the "RANGE" button until "OIL LIFE INDEX" shows on display. Then press and hold "AVG SPEED" and "RESET" (or "RANGE" on late models) buttons until display shows "100".


Seville,
Eldorado


1992-93

Press "INFORMATION" button on the Driver Information Center until "OIL LIFE INDEX" is displayed. Press "STORE/RECALL" until "OIL LIFE INDEX" resets to 100.


Seville,
Eldorado


1989-91

When "CHANGE OIL SOON" or "CHANGE ENGINE OIL SOON" appears on the Driver Information Center, press "ENG-DATA" button until the "OIL LIFE INDEX" appears. Then press the "ENG-DATA" button and the "RANGE" buttons at the same time until 100 displays (about 5 seconds).





















on Dec 07, 2009 | Cadillac Eldorado Cars & Trucks

1 Answer

Service soon light come on


SERVICE light is advise that is time to change oil and other fluids.

Mar 31, 2011 | 1994 Cadillac Eldorado

1 Answer

I have a 1984 Cadillac Eldorado Biarritz. the service soon light is on so I took it to aamco. they said the throttle swith was the cause for the light (the throttle switch is in the Idle speed control...


Hello: The ISC motor should be adjusted. The part that screws into the larger shaft coming out of the motor should be approximately 17 mm. The code does not have to be cleared for the light to go away. You should collapse the ISC motor and check the tps it shoud be -1 to +1 best at 0. Call me if you need further assistance. I have a 1984 Cadillac service manual. 662-449-7099.

Nov 04, 2010 | 1984 Cadillac Eldorado

2 Answers

Why is the "service light now" on


It is telling you there is a problem with the engine performance,have the codes read to find out what it is.

Jun 17, 2010 | 1984 Cadillac Eldorado

1 Answer

My 1984 cadi eldorado keeps dying or losing power when I first start it up. It does not die when I am driving it. I have just replaced the fuel pump and thought that it would end the problem. Is there...


I have an eldorado 1984 barritz 4.1 engine. I am no mechanic but had a similar problem and it ended up being the main head gasket bolts were loose out of spec causing loss of compression and water and oil mix. I did the work myself but it was a fight. the car runs strong and with alot of power.

Dec 04, 2009 | 1984 Cadillac Eldorado

1 Answer

Steady Service Engine Soon light is on the Dash Board. How to fix


YES. IT MAY TAKE SEVERAL STARTS TO CLEAR THE CODE AND TURN THE LIGHT OUT. OOORRRR , YOU COULD REMOVE THE NEGATIVE FROM THE BATTERY FOR 10 MINUTES THEN PUT IT BACK ON AND YOU SHOULD BE BACK IN BUSINESS . GOOD LUCK.

Apr 22, 2009 | 2000 Cadillac Eldorado

1 Answer

Staedy Service Engine Soon Light is on Dash board, How To Fix this Problem?


yes and no disconnect the battery both sides, now without touching the battery touch black to red wires, this resets any codes. if the light comes back on you will need a pcm scan to get any error codes from it.

Apr 22, 2009 | Cadillac Eldorado Cars & Trucks

1 Answer

(1995 Cadillac Eldorado) - Service Engine Soon light is on.


If this problem just started I would try to get a jump on it. It will be easier to track down if the light just started coming on. Otherwise other problems may come into play and the mechanic will need longer to sort them out. At around 70.00hr.Cheapest fix is to try and drop in a set of plugs. Good luck.

Jan 11, 2009 | 1995 Cadillac Eldorado

1 Answer

Oil service reset


When "CHANGE OIL SOON" or "CHANGE ENGINE OIL SOON" appears on the Driver Information Center;
  1. Press "ENG-DATA" button until the "OIL LIFE INDEX" appears.
  2. Press the "ENG-DATA" button and the "RANGE" buttons at the same time until 100 displays (about 5 seconds).

This is what I found on your car bud. I hope that's what you're looking for. :)

Sep 21, 2008 | 1989 Cadillac Eldorado

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