Question about 2001 Hyundai Accent

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I have a 2001 Accent that has injector #2 misfiring. Does this mean that I have to have the injector replaced, or will injector cleaner possible fix the issue? The car sat for 4 months and I've already replaced the mass flow air sensor, TP sensor and I was told the knock sensor needed to be replaced however, I don't have any engine lights on at all. So I don't know if this just the mechanic trying to get more money from me or a real issue. The engine once started shakes in sequence. It's fine for about 30 seconds then shakes, then fine again for 30 and then shakes again. Any help with this would be greatly appreciated.

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Try have the injector service first, by the mean of dismantling the injector and clean them with thinner. (except the body, just use wire brush). becareful, though the part component is so tiny that it will be VERY HASSLE when you lose any of it. make sure all the jet hole is not clogged.

Posted on Nov 22, 2009

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Posted on Jan 02, 2017

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Hyundai accent1.5rsi misfiring


misfires are also from bad injectors , injector harness problems and low fuel pressure
when a misfire is there at start nut clears it is an indication that the injectors need cleaning/ replacing

Feb 26, 2016 | Hyundai Motor 1998 Accent

1 Answer

What does a digital trouble code P0172 mean?


System Too Rich (Bank 1) What does that mean? Basically this means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. Note: This DTC is very similar to P0175, and in fact your vehicle may show both codes at the same time. Symptoms You will more than likely not notice any drivability problems, although there may be symptoms such as a misfire. Causes A code P0172 may mean that one or more of the following has happened: The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry. There could be a vacuum leak. There could be a fuel pressure or delivery problem Possible Solutions Possible solutions include: Inspect all vacuum and PCV hoses, replace if necessary Cleanthe MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling Inspect fuel lines for cracks, leaks, or pinches Check the fuel pressure at the fuel rail Check the fuel injectors, they may be dirty. Use fuel injector cleaner or get them professionally cleaned/replaced. Check for an exhaust leak before the first oxygen sensor (this is unlikely to cause the problem, but it is possible)

Read more at: http://www.obd-codes.com/p0172
Copyright © OBD-Codes.com

May 07, 2015 | 2001 Mercury Villager

2 Answers

2001 pontiac grand prix 3.8. I replaced bank 1 sensor 2 O2 sensor fixed my code. Put in fuel injection cleaner drove about 100 miles, and bam got code P0172 code system to rich never had that code could...


Does it give a misfire or just, system to rich? If it gives you a cylinder number trying switching a injector, if the code jumps to cyl where you swapped, replace injector.

Jan 27, 2015 | 2001 Pontiac Grand Prix

1 Answer

2001 dodge grand caravan sport 3 code 3.3 liter flex fuel random cylinder misfire along with 1 2 5 6 cylinder misfires. scan tools are unable to communicate with computer but check engine light will come...


Dirty fuel injectors. Computer will show misfire on the cylinders that are malfunctioning. If injector cleaner in tank won't clean them, pull them all out and have a professional take them apart and cleaned. Each injector has a screen in it that can get plugged up. Think about Bro, all other stuff has been renewed.

Jul 15, 2017 | 2001 Dodge Grand Caravan

1 Answer

Multiple cylinder misfire, codes P0354, P0356, P0357, P0361


clean the MAF, Mas Air Flow Sensor in the air intake tube first. Use carb cleaner or MAF cleaner. Do not touch the 2 sensor wires that you spray. delicate!!

ALso, put a bottle of Chevron Techron Fuel injector cleaner in the fuel tank, 1/4 tank or less.

Try that first. Also, replace spark plugs, put antiseize on the threads. Last resort is to replace the COPS, Coil on plug for each offending cylinder.

Misfire Definition: A misfiring cylinder is lacking power relative to the other cylinders. The causes for a cylinder specific misfire could be fuel, spark, or mechanical problems. Perform a thorough visual inspection. If no visible concerns are found use the following WDS tools for misfire diagnosis:
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  • Power Balance (Identify the cylinder of concern)
  • Relative Compression (Rule out a possible mechanical issue)
  • Fuel (Make sure fuel injectors are not restricted) (plugged)
  • Ignition (Make sure spark plugs and coils are working properly)
  • Oscilloscope (Detailed signal analysis)

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1 Answer

I have a 2001 jeep cherokee with codes 202 and 302, fuel injector and misfire. What could the problem be?


Its the injector no.2.Its not responding to the control signal which means it is not working.Get it checked and also the wiring before its replaced.(Tech name is the output driver is not responding to the control signal and the 302 means its detecting the misfire on inj. no2)Hope this helps

Jan 01, 2010 | 2001 Jeep Cherokee

1 Answer

01 accent 1.5, has check engine light on, multiple misfires, worse at times, and then sometimes it fine, could this be the coolant temp.sensor


DIRTY FUEL INJECTORS -BAD COIL-PLUG WIRES AND PLUGS.MOST OF THE TIME CAUSE MULTIPLE MISFIRE..A BAD COOLANT SENSOR CAN CAUSE MISFIRE..

Jun 12, 2009 | 2001 Hyundai Accent

2 Answers

Diagonostic trouble codes reported p0171 p0174 p0302 2001 Taurus, only reports P0171


P0171 is system too lean bank 1, P0174 is too lean bank 2, and 302 is misfire bank 1. Look for vacuum leaks. If you don't find them, put a vacuum gage on it can check. The P0171 is almost always a vacuum leak. If not other possibilities are front O2 sensor is too old and should be replaced (if mileage is greater than 100k then replace). Try injector cleaner. Misfires are usually bad spark plugs, but could possibly be caused by insufficient fuel. I've never had a car of mine in bad enough shape to have that error.

Sep 14, 2008 | 2001 Ford Taurus

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