2001 Cadillac DeVille Logo
Posted on Feb 19, 2010
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01 deville running rich. Why?

Service engine soon light is on and scan engine running rich

1 Answer

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  • Expert 106 Answers
  • Posted on Feb 19, 2010
Anonymous
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Joined: Feb 10, 2010
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Emission issues. check all vacume lines for cracks. 01..its time for new ones. check all electrical conections e

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0helpful
1answer
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).





















3helpful
3answers

My 2003 chevy truck 1500 with a v6 runs good 15miles and after that it starts missing and like something holding it back

IF the "check engine" or "service engine soon" light is on. You can take it to most any auto parts store to get the codes read.

Better yet would be to find someone with an actual scanning tool to see what all of the sensors are reading.

IF there is no check engine or service engine soon light on then it could be quite a few different things wrong.

A plugged catalytic converter is a possibility. Another item that i ran across on 3 different vehicles within a day was a bad coolant temperature sensor. All 3 vehicles ran fine when 1st started, but then slowly started to "load up" or run rich. REAL rich.

Turned out on all 3 vehicles there was NO check engine/service engine soon light but after hooking up the scanning tool all 3 showed the coolant temp sensor was reading -40°!!

Yup, the computer was being told the engine was at 40 BELOW zero. The computer took that info and adjusted the fuel/air mixture and timing to help the engine warm up.

While the engine warmed up, the sensor kept saying it was 40 below and made the engine run rich.

This MAY be the problem, but without a scan tool it's hard to say.

Hope this helps.
0helpful
1answer

The engine light comes on, mechanic states that the car reads that it is running rich why

You need a better code reader, ie "Mechanic". The ECM should control "Running rich or lean". Is engine light? Quote, Service SOON or Service NOW. SOON is usually minor, but needs to be found in the codes. "NOW" need to be checked immediately.
1helpful
1answer

Service engine soon light is lit what can problem be

Service Engine light just is a warning that is time to tune up or change fluids. Isn't the same that Check Engine light, this is some fault code stored in the PCM and will need scanned to know what sensor is in fail.

Good luck.
0helpful
2answers

My 1990 Deville is saying "Service Engine Sonn". It is running fine but what do I have to do?

Take the vehicle to AutoZone and ask them to read the computer code for you. They will tell you the code and what most likey is thcause for it being set. AND they do this for free.
0helpful
1answer

Service engine soon light comes on

Need to scan the car for codes that caused the service engine soon light to go on.
0helpful
1answer

SERVICE ENGINE SOON LIGHT ON

you need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code.
1helpful
1answer

The service engine soon light on my 1998 Cadillac Seville concourse wont shut of. The car runs perfect. 103k miles.

Go to auto zone and get a free OBD2 scan.. As a rule.. Make sure fluids are good and ignore that light.. Trust me on that.. that check engine lite is a money trap that the GOV put there to psychologically drain your wallet.. Dont tellem i said that
1helpful
2answers

SERVICE ENGINE SOON

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