Question about Ford Mustang

1 Answer

I did change both oxygen sensor and the light is still on I must say that the car is running good but the light still on I did change also map sensor and every things but the light still on what is the problem??

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Night Owl:

    An expert who has answered 10 or more questions between 12 midnight and 6am on the same day.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Ford Expert
  • 60 Answers

What year is your Mustang? Is there a ecu connector / OBD2 switch under the driver side dash? If so the codes can be cleared manually. I had a similar issue on my gf toyota avalon and I read that sometimes a ecu fails to recognize the work being done mechanically. Another trick with eliminating the problem of a engine light/code showing try and disconnect your negative battery cable from 20 minutes then reconnect it drive car for a bit see if code is gone/comes back. Hope this helps ya

Posted on Nov 17, 2013

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

  • 1 Answer

SOURCE: truck starts, dies. truck runs good some days,bad the next

I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!

Posted on Oct 06, 2008

mkv0525
  • 358 Answers

SOURCE: I have 96 gmc 350 vortec. missing really bad. Ive

ou need to check compression on all the cly. do you know which cly is dead?

Posted on Jun 12, 2009

roniecon
  • 6826 Answers

SOURCE: Car started hesitating then died

replace the fuel filter,if this does not help,replace the fuel pump.

Posted on Mar 03, 2010

  • 1374 Answers

SOURCE: 94 camry. 2.2 fed emissions.

Before we both knock ourselves out with fuel injector testing. Hook up a Digital voltmeter (DVM) to upstream O2 sensor and lets see how she is burning. Remember positive lead of DVM to signal wire and negative lead to ground. Anything above 550 mV is rich anything below 350mV is lean. Be mindful that an exhaust leak the size of a pin hole in this region can cause a rough idle. A healthy reading should bounce between 550mV and 350 mV.
Next to test is O2 is working block off air in take making mixture rich and see what O2 says about it . Then pull off a vacuum hose (a lean condition) and see if DVM drops to 200to 300mV's.
Keep me posted.

Posted on May 10, 2010

maygemini
  • 147 Answers

SOURCE: My Honda Accord 2000 runs great but the check

p0700 generic trans failure...p0780 mis shift code
1470 is diagnostic pump failure... you cant fix it on the street...

Posted on Jun 17, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a Toyota 4 runner sr5 v6, it's not very good gas mileage. I have changed the air filter and spark plugs, but it is not any different.


Run a compression check on all the cylinders for excessive leakage. Check the timing marks with a timing light to see if the timing is correct. Test the map sensor and the oxygen sensors for proper operation.

Mar 21, 2015 | Toyota 4Runner Cars & Trucks

1 Answer

Need help finding my map sensor


your map sensor on the intaque manifom .when you change your map sensor you have inprestion the motor runing bedter because prestion your car need to run if snt that check your oxygen sensor ,or cank sensor end check ,catalitic muffler if is nut stuck ... mike66

Mar 04, 2013 | Cars & Trucks

1 Answer

Put a lt1 engine in 1994 caprice it skips and wont hardly go up hills and back fires


Hello! are you using the harness for that year LT1? the fuel air mixture is controled by the Manifold Absolute Pressure (MAP) sensor, the Throttle Positioning (TPS) sensor and the Oxygen sensors...When you put your foot in it without O2 sensors there isn't any control over fuel/air mix and ignition advance if the MAP and TPS aren't connected...I'm assuming your using the LT1 ECM...Guru...saailer

May 03, 2012 | 1994 Chevrolet Caprice Classic

1 Answer

Has codes 14 52 and 55 will not pass smog car runs fine the hc (ppm) are901 and the co is10.27


14 = MAP sensor voltage below .16V or over 4.96V
52 = Oxygen sensor stuck at rich position
55 = End of codes (not a fault code in itself)

Would appear that you have either a bad MAP sensor, or a leaking vacuum line somewhere.

The bad readings from the MAP sensor will cause the trouble code with the oxygen sensor (and the reason why you failed the test,) but this is not to say that the oxygen sensor can't be bad also.

Start with the cheapest thing, tracing vacuum hoses and lines for cracks and/or leaks. There should be a diagram somewhere under the hood that shows you the routing of the lines, attached to the underside of the hood or possibly on the front area near the radiator. With the age of the vehicle, I wouldn't doubt that this is the problem.

If everything checks fine with the lines, then try replacing the MAP sensor. These do have a tendency to fail.

Good luck, line tracing is bot a fun job, I've been there many times.

List of Codes

Apr 07, 2011 | 1987 Plymouth Reliant

1 Answer

I have an 02 Liberty with 100,000 miles. It has trouble starting, runs rough, & check engine light is on. I've changed the plugs, coil packs, cam & crank sensors & injectors. I am now at a...


oxygen sensor MAP sensor throttle position sensor have codes read lot of places will diagnoise check engine light get the codes they pull and come back for further guidance here

Jan 03, 2011 | Jeep Liberty Cars & Trucks

1 Answer

Code 51 on a Plymouth sun dance. How do I fix it?


Code 51 = Oxygen sensor stuck in lean mixture mode. ( this will often cause engine to run rich due to oxygen sensor telling engine controller that it is running lean, thus send more fuel) This may be caused by M.A.P. sensor as well, so check vacuum lines and clean connections on MAP sensor first. It should be one of 2 things, Fault from MAP sensor, or faulty oxygen sensor.

Nov 01, 2010 | 1990 Plymouth Sundance

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

3 Answers

1991 Chevy Lumina 3.1 won't pass smog. Changed the wires and plugs (found 2 fouled plugs), repaired vacuum hose that came from the MAP sensor... Now I have no idea... report shows unburned fuel...any...


If your car runs well, then you're looking at Oxygen sensors that need changed. For your car, they should be changed between every 50 and 60,000 miles. This is the key sensor to the fuel mixture, and likely the problem with your plug fouling as well. Bad oxygen sensors will cause the car to run rich, but it will run ok. There are other sensors that can cause this, but they will make the engine run terribly, such as the MAP sensor. The Coolant Temperature sensor can also cause the same problems as the O2 sensors, but it is very reliable and more than likely not the issue.

Nov 30, 2009 | 1993 Chevrolet Lumina

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

Related Topics:

16 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

fordexpert

Level 3 Expert

5501 Answers

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

Answer questions

Manuals & User Guides

Loading...