Question about 1986 Chrysler New Yorker

Open Question

Engine running rich. Oxygen Sensor not connected

Engine running rich. Oxygen Sensor not connected entirely. Just replaced head, head gasket, turbo. Ran fine until replacement now hesitates and even stops

Posted by on

  • Richard Scordino May 11, 2010

    Why is the sensor not entirely connected?

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
chryslertech
  • 115 Answers

SOURCE: Hard start when cold, running rich, poor fuel economy

Chrysler has a bulletin out for a simular condititon that involves replacing the pcm. Heres the bulletin number 18-005-04. This is only 1 possible cause , Fuel pressure, coolant temp sensor, thottle position sensor all can cause like problems. Seeing sensor values and fuel adaptives with a scan tool helps pin point problems.

Posted on Mar 08, 2009

Ad
mecanica03
  • 902 Answers

SOURCE: 93 Subaru legacy 2.2 turbo 5 speed manual

ok , unplugged ox sensor cause engine light is on , then check the air filter and fuel filter for dirty and replace,connect the ox sensor, then disconnect the negative battery terminal few minutes, reconnect and test

Posted on Apr 16, 2009

bitchn65cuda
  • 70 Answers

SOURCE: 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.

Posted on Apr 20, 2009

  • 38 Answers

SOURCE: replaced head gasket on 91 eagle talon turbo

clean out the plug ins with electrical cleaner...sounds like something isnt plugged in or got cut or grounded out when u took all that stuff apart

Posted on Jul 25, 2009

  • 92 Answers

SOURCE: A monrg ago I had, continued....

if it drives, then it is driveable. if the turbo is leaking exhaust, it is not necessarily dead, but it is likely not functioning up to it's potential, but it depends how severe the leak is. The bigger the leak, the less drive the turbo has to spin itself up. The vehicle can function just fine indefinitely w/ a completely non-functioning turbo. The turbo is a really cool device, but it's about as essential as your floormats. As far as the price goes, does that $2000 include a new turbo? If so, is that really necessary? if it's just the turbo's gasket leaking you should be able to get away w/ just a gasket to fix the leak. A turbo can be a messy replacement if it is needed as it is the single hottest component in the whole car (it actually glows red when it's working hard since the turbine can spin up to 140,000 rpm). Anything that gets that hot tends to degrade the bolts and nuts that hold it in place over time. If you do decide to do this, keep in mind that there is a matching turbo on the front bank of that motor that is the same age and could potentially be near having the same problem. As far as the O2 sensor goes, it increases your gas mileage by making your engine run more efficiently. O2 sensors go bad over time, and if you're not seeing blue oil smoke coming out of the tailpipe, i wouldn't worry too much about the oil-contamination issue.

Posted on Sep 29, 2009

Testimonial: "Thank you very much for your imput. Maria"

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Why is my Camaro running rich?


I think it is time for a check up for your injectors

Jul 13, 2014 | 1995 Chevrolet Camaro

1 Answer

It was over heating sputtering running rich


It's difficult to answer from your brief description but it could be a blown head gasket, bad radiator, stuck thermostat, or the cooling system may be air locked. The oxygen sensor could be causing it to run rich.

Before digging into a head gasket do a few more things....

Does the Cooling fan(s) come on? No, check relays? If it has 2 fans turn A/C on, one should come on.

Check engine oil, is it over full and milky looking? Indicates Blown Head Gasket

Open Coolant over flow bottle is it bubbling if so does it smell like exhaust fumes? Indicates Blown Head Gasket

Dec 30, 2012 | 1994 Dodge Shadow

1 Answer

5.3 liter Chevy engine #1 Cylinder not firing at idle


My opinion...

Year? Miles?

There's no way I'd dive into a "HEAD GASKET"
diagnosis without pressure testing the cooling
system and (wet/dry) COMPRESSION testing
the whole engine...

Even if it is a "HEAD GASKET"... the entire engine
might be ready for a REFRESH... and tossing a new
Head gasket into a TIRED ENGINE not insubstantial
(a lot of wasted time & money)...

Come back with some compression numbers...

but don't bother with any of this if your engine oil has water in it.

(in my opinion)

Carnac the Magnificent

Apr 04, 2017 | 2005 Chevrolet Silverado 1500 2WD

2 Answers

What is a code 51


Is refer at O2 sensor, Code 51 - Oxygen sensor output indicates lean too long

Power loss light: Off
Limp-in mode: Engine allowed to run rich, but prevented from running lean

Possible Causes
Bad oxygen sensor - Replace the sensor which is located on the turbo housing near the down pipe (for turbo) or on the down pipe near the exhaust manifold.

Bad connection or wiring - Check the wiring and connections between the sensor and the logic module (or SMEC). Clean and regrease any corroded connectors with dielectric grease and repair any shorts. Look for melted wire insulation near the exhaust manifold. A shorted connection to ground or any positive source will cause this fault code.

Low fuel rail pressure - See the Diagnosing Your Fuel System page.

Diagnostic Method - Trigger Parameters
- In closed-loop
- Sensor output indicates lean for more than 715 seconds (11 minutes, 55 seconds)

Results If Component Fails
A fault code 51 is stored, the circuit stays in closed-loop, and the logic module will still monitor the oxygen sensor signal. If the condition persists for four times what it took to set the code, the logic module will allow the engine to run rich, but prevent it from running lean.

Hope helps.

Mar 28, 2011 | 1996 Dodge Intrepid

1 Answer

Engine light came on took it to auto shop. they said it was a code 51


Fault Code 51 - Oxygen sensor output indicates lean too long

Power loss light: Off
Limp-in mode: Engine allowed to run rich, but prevented from running lean

Possible Causes
Bad oxygen sensor - Replace the sensor which is located on the turbo housing near the down pipe (for turbo) or on the down pipe near the exhaust manifold.

Bad connection or wiring - Check the wiring and connections between the sensor and the logic module (or SMEC). Clean and regrease any corroded connectors with dielectric grease and repair any shorts. Look for melted wire insulation near the exhaust manifold. A shorted connection to ground or any positive source will cause this fault code.

Low fuel rail pressure - See the Diagnosing Your Fuel System page.

Diagnostic Method - Trigger Parameters
- In closed-loop
- Sensor output indicates lean for more than 715 seconds (11 minutes, 55 seconds)

Results If Component Fails
A fault code 51 is stored, the circuit stays in closed-loop, and the logic module will still monitor the oxygen sensor signal. If the condition persists for four times what it took to set the code, the logic module will allow the engine to run rich, but prevent it from running lean.

Hope helps.

Mar 28, 2011 | 1996 Dodge Intrepid

1 Answer

Replaced the O2 sensor unit and the ECM(programs installed) but I'm still getting CHECK ENGINE LIGHT(P0001). what is the possible problem and how can this be resolved?


P0001 Fuel Volume Regulator Control Circuit/Open The above code is about an oxygen sensor code for the heater circuit located in bank 1 sensor 1. (bank 1 is at exhaust manifold by the #1 cylinder head, bank 2 is on the 2nd cylinder head. On some engines, both exhaust manifolds could have one oxygen sensor each side and the 2nd cylinder head will have the sensor 2). On the oxygen sensor itself, it has 4 wires which are color coded. Two of wires are for the heater circuit that heats the oxygen sensor to make it reach optimum operation quickly. Those 2 oxygen sensor heater wires could be shorted between the sensor and the ecm (engine computer) or other engine components.
oxygen%20sensor%20heater%20copy.jpgThe common fix for this code is to check the integrity of the heater wires. Check the wires for insulation and routing which could be loose or touching a hot exhaust that can short the wires. If the engine has too many miles, it is possible that the heater circuit inside is worn and shorted which needs a replacement of the oxygen sensor. If you have a DVOM, you can also test the continuity of the heater wires from the oxygen sensor to your computer pins.
More detailed fixes will be provided as soon as you give the symptoms of the obd2 trouble code. ATS will provide the wiring diagram so you can trace the color coded wires. Use an obd2 code reader or scanner so you can access this obd2 trouble code. When you have this obd2 code list, use it as a reference and give the code to ATS. We will then send you all the possible fixes for the obd2 trouble code. ATS has lots of fixes for obd2 gm codes, obd2 ford codes, dodge obd2 codes and all obd2 import codes such as Toyota obd2 codes, Honda obd2 codes, Nissan obd2 codes, etc. All fixes for this obd2 codes are guaranteed or your money back.
Important TIPS about Oxygen sensor:
The oxygen sensor content of the exhaust gas indicates when the engine mixture is operating lean or rich. When the oxygen sensor detects that the engine is operating rich, the signal voltage is high, and any decreases in the signal voltage means the engine running is lean. The engine computer supplies a reference voltage like one volt or five volts, and then shows the change in the sensor return voltage as the sensor's resistance is changing. If you have connected everything properly, when you crank the engine, you should see the check engine light coming out.
Unheated oxygen sensors rely on the heat of the exhaust gases to reach the working temperature, therefore they might start to cool down while the engine is idling and revert back to a default air-fuel ratio setting. This type of sensor usually has a single wire connector, though others have two. Unlike the fuel pump relay, the 02 sensor heater circuits have a separate fuse for each sensor and grounds, which are controlled by the engine computer.
To read a voltage across the heater, one side must be connected to (+) and one side must be connected to (-), which is accomplished by the computer or a transistor. It can read 12V between each wire and a separate ground if it was connected to positive and the other was not yet connected to ground connection (for details, please contact ATS).after you replace oxygen sensor you have to drive for so many miles before it resets its sef

Dec 13, 2010 | 2001 Volkswagen Beetle

1 Answer

Engine codes are 12, 51,21,53,55 can someone tell me what these codes are. engine is running extremely rich.


12 is battery has been disconnected recently, or went dead.
51 is Oxygen sensor stuck on lean mixture reading
21- no change in oxygen sensor reading
53- internal problem with logic module
55- is end of message/codes.

51 & 21, basically telling you same thing, but I wouldn't jump at changing oxygen sensor first, as a bad M.A.P. sensor can cause a rich mixture, thus oxygen sensor switches to lean to try and compensate. Personally, I'd go with map sensor first, check connections and vacuum lines if all good, replace it, then I'd go to oxygen sensor .

Oct 21, 2010 | 1993 Dodge Caravan

1 Answer

Jerking and hesitation when accelerating. diagnostics says running rich on all 4 cylinders. can it be the turbo or catalytic converter ?


MANY THINGS WILL CAUSE ENGINE RUN RICH.LEAKING EGR VALVE - FAULTY FUEL PRESSURE REGULATOR - BAD OXYGEN SENSOR. VACUUM LEAK AT INTAKE MANIFOLD.

Jul 27, 2010 | 2005 Volkswagen Passat

1 Answer

93 Subaru legacy 2.2 turbo 5 speed manual tries to quit, jerks, acts like its not getting enough air, running rich,check engine light has been on since Ive had it.Hesitation. unplugged oxygen censor and it...


ok , unplugged ox sensor cause engine light is on , then check the air filter and fuel filter for dirty and replace,connect the ox sensor, then disconnect the negative battery terminal few minutes, reconnect and test

Apr 16, 2009 | 1993 Subaru Legacy

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

44 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chrysler Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

Are you a Chrysler Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...