Question about 1996 Plymouth Neon

1 Answer

1996 Neon is blowing black smoke from the exhaust.

When hooked to a computer, the head code says 171. I've replaced the fuel pump and upstream oxygen sensor, but still having this problem. Car doesn't run well, it jerks when driving.

Posted by on

  • 1 more comment 
  • bish7 Jan 01, 2009

    We are using 87 octane of new fuel. What do you mean by fuel getting dumped? We changed fuel pump because car was jerking as if it wasn't getting enough fuel. What's the solution? Thank you!

  • Mike Butler
    Mike Butler May 11, 2010

    Black smoke obviously a case of too much fuel getting dumped, why did you change fuel pump?

  • Angelo Attard
    Angelo Attard May 11, 2010

    what fuel are you using and how old is it

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Plymouth Master
  • 6,674 Answers

If good, clean fuel, good spark etc. 171 is lean mixture according to my sources.. Thus I'd say if engine is being told from O2 sensor that mixture is lean, that would explain all the extra fuel getting ( dumped ) fed to engine. I guess i"d start by changing O2 sensor. (Oxygen sensor.) If it has 2, do the one upstream, closest to engine on exhaust manifold or pipe.

Posted on Jan 01, 2009

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

4.0l 6 cylinder. What are the probable causes of DTC P0171?


no. (but the isc valves loves to stick but will not cause black smoke)
the 4.0L is one of 5 million made, it's well known,
the black smoke don't lie. it's rich and the cat seems burned up too.
as with black smoke the cat will try to catalyze all that and glow red hot. is your cat missing?>
so why not believe the code 171, its real and is catastrophic failure. there are 2 engines here, FED and California.(exhaust)
(2 different exhausts and sensors there.
as they say, fix what is OBVIOUSLY bad, 171
(find why using tools or inspections)
Fuel System Lean (Bank 1)in most cases the exhaust is cracked near B1S1 0xy sensor
this causes it to stick at 0volts, (lies) and the PCM sees that obvious lie then goes rich. (limphome rich)
if the pcm cant measure oxygen, it must now guess at fuel trim.(bad that.)
it goes rich, so you dont melt pistons running lean.
(by design)

bad front oxygen sensor (aka , up stream bank 1)
in calif cars, it can have a split exhaust on the I6 and have 3 sensors. (hope not yours, do look..)
most have 2 sensor, front and the useless behind cat sensor(B1s2)
S2 is useless for running mix, the rear is for smog test the cat.

so it rich, and now misfires. and the spark tips are black.
and it misfires to bad it can even idle, sure. (Drops)
the cause, is too rich.
the 171 means the PCM sees it stuck at 0v forEVER.

there are in fact other causes.
but these 2 are top cause.

on all 3 of my 4.0L engines
the exhaust manifold cracked on the under side.
side facing block. (i use a hose to ear to hear the putt putt puts, (with FULL PPE protection from burns from a dead cold engine.) ask how.
even the SST exh. man. did that.

or the header flange gasket is TOAST. (that too putts when bad.)

Aug 03, 2015 | 1996 Jeep Grand Cherokee

2 Answers

I've got a Peugeot 407 HDi 2005 now with a power loss, particularly obvious in low rev range, blowing black smoke - looking like excessive fuel input. Also, it is using a huge amount of fuel.


Is it a diesel. If so it could be the particulate filter blocked, or it could be a failed fuel pump or something internal of the pump, or if a petrol it could be a failed catalytic converter, undo the exhaust and see if that changes, if so then look closely at your exhaust.

Dec 24, 2014 | Peugeot Cars & Trucks

1 Answer

I just replaced the head in my 99 neon and i'm blowing white smoke from the exhaust. What's the problem


You are burning coolant, the head gasket can be put on Wrong, If your looking at the engine the right rear corner is the only oil passage for the head, you will see a difference in that corner of the head gasket. If your sure that the gasket is on right you may have a warped or cracked head or improper torqued head, all head bolts MUST be replaced when you do a new gasket cause the bolts stretch when torqued. The spec is 25, 50 then 50 then 1/4 turn for the bolt torque.. Make sure u start from the center of the head.

Jun 10, 2012 | 1999 Plymouth Neon

1 Answer

1996 Dodge Dakota 8 cylinder code P0171


there is only one oxygen sensor.. it is located in the exhaust pipe comming out of the engine jusy at the starting of exhaust... u can easily find it and replace it..

Aug 01, 2010 | 1996 Dodge Dakota

1 Answer

I have a 1996 honda passport V6, the car was scanned and found code p0134. the car runs but after a few minutes of warming the car stalls and backfires runs terrible what can cause those type of problems


This code refers to the front oxygen sensor on Bank 1. Basically the oxygen sensor is inactive.

DTC P0134 - 02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

The powertrain control module (PCM) provides a baseline voltage of about 450 mV on the oxygen sensor signal circuit. When cold, the PCM detects the the internal resistance of the sensor is high. As the sensor warms up the resistance is lowered and it starts producing voltage based on the oxygen content in the exhaust. When the PCM determines that the time it took for the sensor to warm up is greater than one minute or that the voltage is inactive (not reading outside 391-491 mV it views the sensor as inactive or open and sets the P0134 code.

Potential Symptoms: One or more of the following may occur:
* Check engine light illumination
* Poorly running/engine missing
* Blowing black smoke
* Poor fuel economy
* Dying, stuttering

Causes: A code P0134 may mean that one or more of the following has happened:
* Bad O2 (oxygen) sensor
* Bad heater circuit in the O2 sensor
* Wiring or connector to the sensor frayed / broken
* Blown heater circuit fuse
* Holes in the exhaust system
* PCM failure

Possible Solutions: The most common fix is to replace the oxygen sensor. But that doesn't rule out the possibility of:
* Rusted exhaust pipe
* Inspect wiring & connector(s) for problems
* Excessive amperage blowing heater fuse (still requires replacement of sensor but also replacement of blown fuse)
* Replace PCM (only as last resort after all other possibilities are covered.


Hope helps (remember rated and comment this).

Jul 15, 2010 | 1996 Honda Passport

2 Answers

White smoke blowing out of exhaust?


black smoke is fuel white smoke is oil. change your spark plugs to a hotter plug and run with some hpr 50 engine oil or somrthing nice and thick

Oct 11, 2009 | 1996 Ford Thunderbird LX

1 Answer

1997 neon, fuel pump fuse keeps blowing


I had a neon that did this in my shop. I found one of the wires to the Oxygen sensors was melted near the exhaust and when you would give it gas the exhaust would flex and short out the o2 sensor.

Jun 11, 2009 | 1997 Dodge Neon

1 Answer

Check light on black smoke,fuel consumption,the scan read PO 171 please what is the problem.


Sounds like a faulty oxygen sensor, telling computer that engine is running lean, so it's dumping more & more fuel to try & correct it. Bank 1 oxygen sensor.

Jun 04, 2009 | 1998 Toyota Avalon

3 Answers

1996 Jeep Cherokee Sport bogs down


I just posted a simular resonse in another post. What is sounds like it that the fuel pump is starting to go bad. When it heats up after use the pressure drops not pusing the full amount of fuel. Whenits cold it works fine until it heats back up 10-20 mins. remember fuel in the tank helps cool the pump so keep it soewhat full but sounds like the damage is done. your probally gonna have to replace it.

Joe

Mar 08, 2009 | 1996 Jeep Cherokee Sport

1 Answer

1996 Saturn SL1 1.9L gas smell from exhaust and poor fuel economy


I DONT KNOW THE CODES OFF THE TOP OF MY HEAD BUT IT SOUNDS LIKE YOU HAVE AN EXHAUST LEAK AT THE FRONT OF THE EXHAUST SYSTEM AND THE OXYGEN SENSORS DONT KNOW ABOUT IT .IN TURN THEY ARE ADDING MORE FUEL TO YOUR SYSTEM BECAUSE TOO MUCH AIR IS GETTING SUCKED IN TO THE EXHAUST.

Jan 15, 2009 | 1996 Saturn SL

Not finding what you are looking for?
1996 Plymouth Neon Logo

Related Topics:

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top Plymouth Experts

yadayada
yadayada

Level 3 Expert

63801 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

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

Answer questions

Manuals & User Guides

Loading...