Question about 2007 Jeep Compass 2.4

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Cylinder 1 misfire. how to fix?

Car has a misfire. dnt know exactly what cud b causing it. ideas?

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Posted on Jan 02, 2017

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SOURCE: what would cause a cylinder 5 misfire in my 2002

04jeeplibertypo305changedinj coil plug counters stayed high for #5 saw spikes on other cyls changed chk sensor no spikes on any misfire counter a week later back with a po 305 ?

Posted on Jul 24, 2010

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1 Answer

Can you remove a resonator from the tailpipe and have the car run right?


Maybe but cud b *******. Hav u changd plug wires..git old inside. Distributr cap cud hav tarnish..take off n look. Cud hav leakn injector or water gittn in cylinder. Inspect intake ir head gaskets

Oct 11, 2015 | Cars & Trucks

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2001 buick century P0304 step on gas engine light starts flashing


P0304 is engine misfire #4 cylinder Several things can cause a misfire #1 electrical which you have covered #2 Mechanical Test engine compression is should be around 150 cranking and 120 running . internal valve train components can cause bad compression and the valves then self. #3 fuel injector can be the cause suggest swapping with a know good cylinder and see if misfire follows injector.

Aug 19, 2014 | 2001 Buick Century

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Random multiple misfire P0300, P0302, P0304 on 2006 Kia Rio


A competent mechanic will check all probable causes associated with these DTC codes.
Code P0300: Random-Multiple misfire detected. Probable causes:
1. Vacuum leaks, damaged hoses, or improper routing
2. Fuel contamination
3. Ignition system - Ignition module, coil, spark plugs and wires
4. Fuel system
Code P0302: Cylinder 2 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
5. Fuel system
Code 0304: Cylinder 4 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
5. Fuel system

Be sure the invoice enumerates all of these probable causes as having been checked. Also, some of the replacement parts installed earlier may be faulty.

Jan 19, 2014 | Kia Cars & Trucks

1 Answer

I have a 2007 Chevy Tahoe LT and I replaced the spark plugs and changed the oil and it is still riding rough and it is saying that there is a misfire in the first cylinder. I checked the gaping in the...


misfire cud b a worn plug wire-they wear inside-chec all of them specialy at the boot-------or a bad injector-inspec connections-----that cylinder or piston may b worn too-a compression test can disclose------all plugs shud b tan or brown at gap

Dec 01, 2013 | Cars & Trucks

1 Answer

My 99 mazda protege, has 2 codes p0705 and po302 what would cause this and how can it be resolved?


its a cylinder misfire and trans circuit problem--sensors cud be worn or hav connection issue--has plug wires been changed-also coil me be faulty--has trans been serviced with new fluid and filter-shifting soleniods cud be sluggish from dirt

Aug 15, 2011 | 2002 Mazda Protege

2 Answers

Hi, I'm getting codes 136 02 sensor bank 1 sensor 2 along with 301 cylinder 1 misfire and 304 cylinder 4 misfire. Could the 136 be caused by the misfires ? I'd like to just swap out the plugs, but, they...


I wouldn't worry about the 02 code it will clear when you replace the coils. to be positive that the coils are bad, swap them with another cylinder and see if that cylinder misfires. 90% of the time it's the coil. Let me know
Randy

Nov 28, 2010 | 1996 Ford Crown Victoria

2 Answers

My 1997 Nissan 2.4 liter pickup suddenly began misfiring at idle only. It runs normally at all other speeds. It seems to be misfiring on one cylinder only. Any ideas?


If there are no symptoms (symptoms may include: the engine may be harder to start; the engine may stumble / stumble, and/or hesitate), the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

A MISFIRING may mean that one or more of the following has happened:
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer

With one scanner you can know exactly what cyl is misfiring. Tell us news.

Jul 02, 2010 | 1995 Nissan Altima

1 Answer

Cylinder Misfires


It could be your spark plugs or a coil. To see if it's a coil move the coil from #5 to #6 the miss will change to that cylinder with code p0306 and change #1 to #3 and see if it changes to p0303. If it does replace all the coils. You change all coil because if one or two go you know the rest are not far behind

Aug 07, 2009 | 2005 Honda Accord

4 Answers

Diagnostic codes for 200 Daewoo Lanos..........


Do you feel a misfire?? Random misfires are usually caused by a lean fuel mixture, the reasons that cause this a to many to list here.

Jul 23, 2008 | 2002 Daewoo Lanos

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