Question about 2002 Dodge Dakota Club Cab

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After a diagnostic that determined that i neded a new gas injector and got replaced my check engine lihgt came back on again

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There may have been a soft code at the time the first problem occurred. Now its a hard code. I recommend you bring it back to the shop that did the first repair. They will scan the ECU for codes and do the repair. Hay you never know maybe the techn loosen a wire by mistake.

Posted on Apr 27, 2010

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Posted on Jan 02, 2017

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Can i use a store bought digital multimeter to determine if there is a possible short to signal circuit with a P2196 (Bank 1 Sensor 1) causing the rich stuck in my car?


My source says code 2196 means the signal coming from the O2 sensor is stuck on rich.
The sensor is supposed to switch back and forth from lean to rich to lean as the computer controls injector "on" time. If the sensor signal stays rich, in most cases there is a leaking injector, or the sensor is faulty. I doubt a short to anything would be involved.
The sensor generates a small ac voltage between zero and one volt. Less than 1/2 volt is lean and more than 1/2 volt is rich. There is a heater in the sensor that could short to the signal wire, but then you should have a code for the heater circuit too.
You can remove the sensor and check for excessive carbon buildup from a rich fuel mixture, or go ahead and replace it and see what happens. A repair shop would be able to check exhaust gas output to find out if its the sensor or a leaking injector.

Dec 03, 2015 | 2004 Hyundai Elantra

1 Answer

2002 Daewoo Lanos 1.6 L engine- Car cranks over, but will not start. Sprayed gas in air intake manifold and car will start and idle perfectly. The whole ignition system has been replaced. Fuel system...


Either the injectors are incapable of spraying fuel or they aren't receiving an electrical pulse. That might be because of faulty wiring/connections or a faulty ECU or it could be the ECU hasn't enough information in order to send a pulse, again because of faulty wiring or connections, the crank sensor or perhaps that is what the security immobiliser does when it is armed.

Check for an injector pulse with an oscilloscope or noid light.

Jul 29, 2017 | 2002 Daewoo Lanos

1 Answer

My 99 intrepid is not putting out gas from the # 2 injector and shuts off. Also when driving seems like the transmission is jumping into gear. what could it be?


The injector leak is probably just an o-ring seal. If the engine is missing, that will effect the transmission shifting. You need to have a diagnostic scan done to determine more.
I hope this helps.

Sep 25, 2011 | 1999 Dodge Intrepid

1 Answer

ERATIC INJECTOR PULSE NO START


You describe an electrical issue. First of all, how do you know the injector pulse is 'erratic'?
Is the ignition spark ALSO erratic? If so, how so? I need specifics, details regarding your description of 'erratic'. I can assume/presume you have experience/education/training in automotive diagnostics... ??

In my electrical/eagelectronics experience, you definitely have an electrical/electrodynamic problem/issue.

Tell me what you've done, diagnostically, to determine (isolate) the 'CAUSE' of this erratic injector pulse. What have you inspected/checked? What have you NOT inspected/checked?

Get back to me, then we can go from there.

However, first thoughts
The engine management computer (ECM/ECU/PCM) can cause/create the symptom you describe
The engine wiring harness also (chafed wires, bad ground circuits, etc.)
Malfunctioning senors (Crank Position Sensor (CKP), Cam Position Sensor (CPS),
Low Voltage Condition, etc.

Feb 08, 2011 | Hyundai Tiburon Cars & Trucks

1 Answer

Emisssion test failed with 0p410 code/fuel cap failed


The gas fillup should be clue, either the gas cap was not tightened enough or it is defective.

May 15, 2010 | 2004 Chevrolet TrailBlazer

3 Answers

#5 piston not working correctly.


you may need a new fuel injector. or a intake gasket. here is a tip ;with the engine running spray starting fluid or a carb cleaner around the intake at the #5 cylinder if there is any change in idle you need to replace the intake gasket if no change replace the fuel injector

Apr 05, 2010 | 2003 Buick Rendezvous

1 Answer

I had a new fuel injector put in on monday the next day the check engine light came back on and now it lurches in idle.Took it back today they said there was nothing wrong when I got in the car the check...


No, bad brakes would not make the check engine light come on, you best bet is to wait for the check engine light to come back on and got to AUTO ZONEor ADVANCE AUTOPARTS and have then do a free obd2 check on it. they will bring out a small computer plug it in to the car and read what the problem is from the cars computer, then from there you will know what action to take.

With one injector replaced you may have a bad gas or somthing that is killing the flow to it witch could make the car act like that... need more help just let me know!

Mar 26, 2010 | 1996 Lincoln Town Car

1 Answer

Diagnostic warning light.....diagnostic done at kia dealer... no obvious but told it might be mixture problem as they had seen same before. Any ideas?


Hi.

Mixture problems can be caused by a number of factors and faults. A computer module, the PCM, determines the mixture using data from different sensors. Re-circulated gas is also used to determine the mixture.

If the problem only happened at cold, then check the MAF (mass air flow) and (IAT intake air temperature) sensor, and also have the vacuum system tested for leaks, hat can affect the mixture and make a difference, particularly when idling.


If the problem reported by the error code was mixture related, then a common cause is often the EGR valve, that regulates gas re-circulation. In this case the engine will be running rough at idle and when driving.


More problems that can return mixture related codes can concern:
Fuel injector problems (voltage , leaking injector, dirty injector). In that case more codes may be returned. Excessive or insufficient fuel pressure due to fuel lines, pump problem, or bad fuel pressure regulator. Gas recovery system, vacuum leaks and EGR valve. Air leaks from air intake mainfold (after sensor), or defective MAF, IAT. If sensors are faulty, then you will get more codes. If the car recently runt out of fuel, or if the fuel cap is defective you can also get an error related to mixture. Exhaust leaks before reaching the O2 sensors. Timing problem.


If the only problem was a mixture related problem, then wait to see if the code comes back. The engine warning light will turn on. In that case check for additional codes and report the code here.

Things are different if there are more codes. Also there are differences if the mixture is too rich or poor.


Regards.

Feb 04, 2010 | 2004 Kia Rio

1 Answer

Does not run smoothly it loses compression while driving


Hello mmelaniegodw...you need to have your S10 scanned with diagnostic equipment to determine the cause of the check engine light. This will make the proper repairs to correct the problem much easier.
Since the fuel filter was clogged, some of the debris has likely passed through it and have clogged the injectors.
You can try treating your fuel with a good fuel treatment/cleaner.
Also check for vacuum leaks, and check fuel pressure.

May 28, 2009 | 2000 Chevrolet S-10

1 Answer

98 taurus started ran a bit then died now wont start


If that is your only transportation you need to call other repair shops. Find out about towing fees and what diagnostic fees they have.

Before there were diagnostic scanners, there were Mechanics. Scanners come in all types and some will suggest possible solutions and others are tools which Mechanics use to find problems.

For instance, you are told you have fuel pressure. You are told they installed new spark-plugs. You were not told if the spark-plugs are getting electricity to fire. You were not told if the fuel injectors are getting electricity to allow gas to reach the cylinders. You can have fuel pressure but the fuel injectors must open to put gas into the engine.

A noid tester or plain testing light will show if the injectors are opening. A spray of starting fluid will also indicate if the engine is not getting fuel despite fuel pressure. It will try to run with starting fluid if it has spark.

When you find out whether it runs, if not, then check for spark if the starting fluid does not make a difference.

It is questionable whether new spark plugs were needed if installing them had no effect. Check other service places.

Aug 09, 2017 | 1998 Ford Taurus

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