Question about 1993 Ford Escort 4 Door

1 Answer

1993 ford escort 1.9 liter. Scan tool gives a 173 code,O2 sensor, replaced sensor and the car runs intermittently better and then reverts to sluggish running. plugs and old sensor coated with black from improper fuel burn.Fuel pump has been replaced. Any thoughts or solutions?

Posted by on

  • drjhuatulco Jul 28, 2009

    thanks for your help for $12.99.
    The unplugging of the mass airflow sensor changed nothing as well as the manifold absolute pressure sensor. The coil, plugs ,wires are new as well as the fuel pump, the fuel injectors have been cleaned but the scan tool continues to tell me that that the O2 sensor is in need of repair even though that has been replaced. so in short I'm at the end of my rope and the solution seems to be no one knows how to repair the vehicle.
    J McLaughl;in


×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 179 Answers

I would check your mass airflow sensor and/or manifold absolute pressure sensor. if you unplug your mass airflow sensor and it runs better then that is the problem. same with your map sensor. hope this helps out. also check for vacuum leaks and make sure your coil, plugs and wires are good.

Posted on Jul 27, 2009

  • Derrick Nichols Jul 28, 2009

    have you checked your catalytic converter. take a temp just before it and then just after it. It should be 100 degrees hotter after if it's doing it's job. also it may be clogged this could be causing your problem.

  • Derrick Nichols Jul 28, 2009

    Also their is no need to be nasty I am trying to help you and have not made 1 cent.

×

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How to fool the ecm by altering the o2 sensor.


What code is it giving ? p0172 system too rich bank 1 ? If it is staying around 0.8 millivolts try introducing a vacuum leak an see if it goes lean ! If it does it is working fine . You probably have leaking fuel injectors or a fault fuel pressure regulator ! You need a better scan tool to check fuel trims , short term am long term ,to see if the computer is adding or subtracting fuel ! Oxygen Sensor Test fixed rich signal Ford O2 Sensor Testing

Oct 01, 2015 | AC Cars & Trucks

1 Answer

Engine Service Soon Light On code P0154


Error Code: P0154
Description:
Heated Oxygen Sensor (HO2S) 1 , Bank 2 - No Activity Detected
Problem areas:
- Wiring.
- Open circuit in signal wire, between Heated Oxygen sensor 1, Bank 2 and ECM. (Must check and confirm)
- Heated oxygen sensor (HO2S).
- Engine control module (ECM).

Nov 20, 2013 | 2003 Mitsubishi Montero Sport

1 Answer

97 Volvo trouble code p0130


this obd2 trouble code table can help you understand the meaning of code. And for your code, you can try following:
Using a scan tool, determine if the Bank 1, sensor 1 is switching properly. It should switch rapidly between rich and lean, evenly

1. If it does, the problem is likely intermittent and you should examine the wiring for any visible damage. Then perform a wiggle test by manipulating the connector and wiring while watching the o2 sensor voltage. If it drops out, fix the appropriate part of the wiring harness where problem resides.

2. If it doesn\'t switch properly, try to determine if the sensor is accurately reading the exhaust or not. Do this by removing the fuel pressure regulator vacuum supply briefly. The o2 sensor reading should go rich, reacting to the extra fuel added. Reinstall regulator supply. Then induce a lean condition by removing a vacuum supply line from the intake manifold. The o2 sensor reading should go lean, reacting to the enleaned exhaust. If the sensor operates properly, then the sensor may be okay and the problem may be holes in the exhaust or an unmetered vacuum leak in the engine (NOTE: Unmetered vacuum leaks at the engine are almost always accompanied by lean codes. Refer to the appropriate articles for diagnosing an unmetered vacuum leak). If the exhaust does have holes in it, it's possible that the o2 sensor may be misreading the exhaust because of the extra oxygen entering the pipe via those holes

3. If none of this is the case and the o2 sensor just isn't switching or acts sluggish, unplug the sensor and make sure there is 5 Volt reference voltage to the sensor. Then check for 12V supply to the o2 sensor's heater circuit. Also check for continuity to ground on the ground circuit. If any of these are missing, or aren't their proper voltage, repair open or short in the appropriate wire. The o2 sensor will not operate properly without proper voltage. If the proper voltages are present, replace the o2 sensor.

Sep 23, 2011 | 1997 Volvo S90

1 Answer

2004 Toyota Camry - Check engine light has been coming on intermittently for a year. When reading the codes it states Knock Sensor and O2 Sensor Bank 1. The car is very sluggish when the light comes on....


I would tend to say the knock sensor is a result of the 02 sensor, because if it is not reading correctly it could be reporting the engine is running to rich, there for leaning out the air fuel mixture resulting in knocking which is then picked up by the knock sensor. I would start by replacing the O2 sensor in bank 1.

Sep 08, 2011 | 2005 Toyota Camry Solara

1 Answer

Check engine light on. code reads p0130. 2003 gmc sonoma. Is this the oxygen sensor and is it hard to replace myself? Is there a manual?


this is an obd2 trouble code table, it can help you understand the meaning of code.
and for this code you can try this:
Using a scan tool, determine if the Bank 1, sensor 1 is switching properly. It should switch rapidly between rich and lean, evenly.
1. If it does, the problem is likely intermittent and you should examine the wiring for any visible damage. Then perform a wiggle test by manipulating the connector and wiring while watching the o2 sensor voltage. If it drops out, fix the appropriate part of the wiring harness where problem resides.
2. If it doesn\'t switch properly, try to determine if the sensor is accurately reading the exhaust or not. Do this by removing the fuel pressure regulator vacuum supply briefly. The o2 sensor reading should go rich, reacting to the extra fuel added. Reinstall regulator supply. Then induce a lean condition by removing a vacuum supply line from the intake manifold. The o2 sensor reading should go lean, reacting to the enleaned exhaust. If the sensor operates properly, then the sensor may be okay and the problem may be holes in the exhaust or an unmetered vacuum leak in the engine (NOTE: Unmetered vacuum leaks at the engine are almost always accompanied by lean codes. Refer to the appropriate articles for diagnosing an unmetered vacuum leak). If the exhaust does have holes in it, it's possible that the o2 sensor may be misreading the exhaust because of the extra oxygen entering the pipe via those holes
3. If none of this is the case and the o2 sensor just isn't switching or acts sluggish, unplug the sensor and make sure there is 5 Volt reference voltage to the sensor. Then check for 12V supply to the o2 sensor's heater circuit. Also check for continuity to ground on the ground circuit. If any of these are missing, or aren't their proper voltage, repair open or short in the appropriate wire. The o2 sensor will not operate properly without proper voltage. If the proper voltages are present, replace the o2 sensor.

Jul 26, 2011 | GMC Sonoma Cars & Trucks

1 Answer

Hi-Failed inspection at Motor Vehicle Code PO160 (2001 Nissan Maxima). Car runs fine- no dash lights on. Left Rear Oxygen Sensor? Cost to fix or rigg it? Must get this car passed. Thanks in advance,...


CausesPotential causes of an P0160 code include:
  • Holes in exhaust near post cat o2 sensor
  • Bad Bank 2, position 2, o2 sensor
  • Wiring problem, melted harness, broken connectors, etc.
  • Bad PCM
Possible SolutionsIt's always best to do a visual inspection of the exhaust system first. Look for holes near o2 sensors or wiring harnesses coming in contact with exhaust components. Repair as necessary.
1. Start the engine and allow it to reach operating temperature. Using a scan tool, observe the Bank 2 position 2 o2 sensor. If it isn't moving at all this doesn't necessarily mean that anythings wrong. Post cat o2 sensors often switch very little. Increase the engine RPM to a fast idle and then recheck the sensor voltage reading. If it starts switching now, the sensor may be sluggish and/or intermittently going "dormant". Replacing the sensor at this point would be a good idea. Visually check the o2 sensor for contaminates, etc. If you suspect it's contaminated with coolant or oil, replace it. But, if it still isn't responding after increasing engine RPM, turn off the engine and unplug the 2/2 o2 sensor. With KOEO (key on engine off) check that there is 12 Volts battery voltage and a good ground to the o2 sensor heater element. If the heater element has no battery voltage it can cause the o2 sensor to be sluggish and not switch properly which can cause a P0160.
So, diagnose that problem first(there will usually be other codes present). If there is power and ground to the heater element check that the sensor ground is present. If it is, connect a jumper wire between the sensor ground and signal wire. Now the 2/2 o2 sensor reading should be low. If so, replace the Bank 2 position 2 o2 sensor. If, after connecting the jumper wire, the o2 sensor reading still remains "stuck", check for wiring problems, harness contacting exhaust components, or broken connectors. Repair as necessary. Then recheck. If you can find no wiring problems and the o2 sensor reading on the scan tool doesn't change after installing the jumper wire, recheck at the PCM connector. It may be necessary to clip the signal wire near the PCM in a location that will be easy to repair. If it now shows a low voltage reading, then you know beyond a doubt that there is a wiring problem. At this point clipping the offending wire out of the harness and running a new one may be your best bet. But If it still shows no change, the PCM may be at fault.

May 14, 2011 | Nissan Maxima Cars & Trucks

2 Answers

1993 ford taurus 3.8l walgon: Engine is running very rough and seems like it may be getting too much gas. There is no smoke coming from the exaust. The plugs have just been replaced,


Run a diagnostic tool. It is a sensor (O2 or Map) that will cause this but need the scan tool to diagnose the specific problem. Your connections should be under the hood. Good luck

Jan 18, 2011 | Ford Taurus Cars & Trucks

3 Answers

My focus has been chugging and will stall when it gets hot. Driving on hot days is impossible as well as passing other cars. We scanned it ourselves and the code tells us that it is burning to rich. We...


CODE ???? If you would like help need to know what code ? P0172 ?
Using a scan tool an checking scan data would be the first thing to do , before replacing parts ! That's a rookie move. What are the fuel trims at ? is the PCM adding ,taking away fuel ? Are the O2 sensors switching rich to lean like thier suppose to. Using a better scan tool an looking at data , an freeze frame data .
003 Freeze Frame and Conclusion

009 Testing DCTs
You could have leaking injectors , clogged air filter , bad fuel pressure regulator , mass air flow sensor bad . You wan't fix cars , learn how.

o2 sensory ???? ha ha ha lol . it's O2 sensor Suggest you take it to a qualified repair shop . Because you have no clue .

Jun 23, 2017 | 2001 Ford Focus

2 Answers

Trouble code 172 ford escort


system to rich(bank 1). Clean the MAF with QD electronics cleaner and see if it fixes the problem. Otherwise, you might need to replace the 1st o2 sensor and/or the maf. bank 1 is the bank where #1 cylinder is. also check all vacuum lines. if cleaning maf sensor does not help, then replace front 02 sensor on bank 1. the one before converter.

Jul 30, 2010 | 1994 Ford Escort

3 Answers

I have a 2000 frod escort zx2 that has a p0171 Code from autozone. A p0171 is bank 1 running lean code. I have been informed to change the o2 sensor but i dont believe this will fix the issue...any...


DO NOT JUST REPLACE 02 YOUNEED TO SEE WHAT FUEL PSI ARE AND MAKE SURE NO VACUM LEAKS IT COULD BE DIRTY MASFLOW SENSOR IT COULD BE EGR STUCK OPEN LITTLE

Sep 24, 2009 | 2001 Ford Escort ZX2

Not finding what you are looking for?
1993 Ford Escort 4 Door Logo

Related Topics:

51 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

74896 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

fordexpert

Level 3 Expert

5467 Answers

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

Answer questions

Manuals & User Guides

Loading...