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1992 Cadillac Sedan Deville Oxygen Sensors
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kmfmgk
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Dec 12, 2015, 12:22 PM
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1992 Cadillac Sedan Deville Oxygen Sensors
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The check engine light comes on and car runs rough as if on 6 or 7 cylinders. I had the plugs replaced. They were original plugs with 154,000 miles on them. It ran pretty good for about a week, good gas mileage and then it did it again. I check the fault codes and have E-13 and E-44 which means oxygen sensors. Where will these be located on my vehicle and are they hard for a novice to replace. Any and all advice will be appreciated.
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Hammer Time
Ultimate Carjunky
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Dec 12, 2015, 12:41 PM
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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First understand one thing. There is NO code that means any component is bad. The component referred to in a code is not necessarily the cause of the code, especially when you are talking about 0/2 sensors.
The E-13 is 0/2 not ready and the E-44 is a lean code. Something as simple as a vacuum leak can do that.
Code E44 will set when:
- There is an oxygen sensor circuit fault giving a false lean indication. OR
- When the air fuel ratio is actually lean due to a vacuum leak or fuel control system fault.
Possible causes of code E13 are:
- An open in CKT 412 or 413.
- A short to voltage on CKT 412 or 413.
- An oxygen sensor that cannot respond.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
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Dec 12, 2015, 12:45 PM
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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E-13 basically means the O2 sensor isn't active. Could be from a wiring issue, the sensor has oil leaking all over it, the sensor got contaminated by something, or the sensor has failed.
Your Caddy only has one O2 sensor. It should be located in the exhaust manifold near the engine firewall. You might need a special O2 sensor socket to get it out if you can't get a 7/8 inch wrench on it.
If the O2 sensor is contaminated because the engine is burning oil or coolant or it is being leaked all over, you'll wreck the new sensor if you don't correct those issues.
E-44 is o2 lean. Could be either because the engine is actually leaned out, you got a misfire going on, you have an exhaust leak before or around the sensor, the sensor is stuck lean internally, the crkt is shorted to ground, or misfiring cylinders.
Being the age of the vehicle, if the sensor is original and is not contaminated by something, it probably wouldn't hurt to replace the sensor and check its voltage output. You can do that with a volt meter back probing the O2 sensor connector. It should fluctate between 0 and 1 volt DC. Your sensor does not have a heater, so you will need to heat up the sensor by raising the engine rpm or driving the vehicle at cruising speeds.
I recommend NTK, Denso, or a Delco sensors. Don't install a Bosch or universal one.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 12, 2015, 12:47 PM)
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kmfmgk
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Dec 12, 2015, 2:50 PM
Post #4 of 8
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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E-13 basically means the O2 sensor isn't active. Could be from a wiring issue, the sensor has oil leaking all over it, the sensor got contaminated by something, or the sensor has failed.
Your Caddy only has one O2 sensor. It should be located in the exhaust manifold near the engine firewall. You might need a special O2 sensor socket to get it out if you can't get a 7/8 inch wrench on it.
If the O2 sensor is contaminated because the engine is burning oil or coolant or it is being leaked all over, you'll wreck the new sensor if you don't correct those issues.
E-44 is o2 lean. Could be either because the engine is actually leaned out, you got a misfire going on, you have an exhaust leak before or around the sensor, the sensor is stuck lean internally, the crkt is shorted to ground, or misfiring cylinders.
Being the age of the vehicle, if the sensor is original and is not contaminated by something, it probably wouldn't hurt to replace the sensor and check its voltage output. You can do that with a volt meter back probing the O2 sensor connector. It should fluctate between 0 and 1 volt DC. Your sensor does not have a heater, so you will need to heat up the sensor by raising the engine rpm or driving the vehicle at cruising speeds.
I recommend NTK, Denso, or a Delco sensors. Don't install a Bosch or universal one.
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kmfmgk
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Dec 12, 2015, 2:53 PM
Post #5 of 8
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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Thanks, Discretesignals. A lot of good info. I will follow up on it. Jim
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kmfmgk
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Dec 18, 2015, 9:10 AM
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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I want to thank both Hammer Time and Discretesignals for all their help and advice on the oxygen sensor problem. I have located it and it is completely dry and does not appear to be contaminated in anyway. I am currently looking for a vacuum leak. I have no leaks anywhere that I can find. One of you mentioned burning oil or coolant. I can smell coolant after I drive the car for a short time, but it goes away quickly. Does this give you any idea of what to look for if it is a coolant problem that is affecting the oxygen sensor?
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Hammer Time
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Dec 18, 2015, 9:47 AM
Post #7 of 8
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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You can't see contamination in an 0/2 sensor. The sensor is internal.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
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Dec 18, 2015, 10:02 AM
Post #8 of 8
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Re: 1992 Cadillac Sedan Deville Oxygen Sensors
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Quote now important noted ">> I can smell coolant after I drive the car for a short time, but it goes away quickly.<<"
Are you losing coolant? Not from the recovery bottle I mean any air at the radiator? If that's really burning coolant that's first thing to chase down IMO or what's the point in continually trashing sensors?
Pressure checks, look for one or more spark plugs even now newer that are different up to a compression check and of course anything visual seen,
T
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