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#2 cylinder misfire on 2002 caddillac what can cause this

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Causes cylinder misfire


Most common cause is an old spark plug that burnt out the coil. Spark plugs should be replaced every 100,000 miles. If the plugs are old replace the spark plugs and swap the coil with cylinder 6. If the code jumps to cylinder 6 you know you have a bad coil.

Apr 03, 2014 | 2002 BMW X5

2 Answers

2002 ford escape 3.0L DTC P0305and P0306 what would you ck


P0305 - Cylinder 5 Misfire Detected
P0306 - Cylinder 6 Misfire Detected

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, The Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

When is the code detected?
- Engine Cylinder #5 and #6 is Misfiring.

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation

Possible Causes:
- Improper spark plug at cylinder #5 and #6
- Insufficient compression at cylinder #5 and #6
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #5 and #6
- Fuel injector #5 and #6 may be faulty
- Intake air leak at cyli

Possible Solution:
- Perform Injector Service
- Replaced Spark Plug #5 and #6
- Replaced Injector #5 and #6
- Replaced Ignition Coil #5 and #6

Hope helps.

Jan 02, 2011 | Ford Escape Cars & Trucks

1 Answer

Where is the Misfire sensor located on an 2002 Acura RL?


There is no "misfire" sensor.

The computer calculates misfires based on the known RPM of the engine and how long it should take for the crank sensor to produce its signal after a cylinder fires. If it is slower than expected the computer recognizes that the cylinder did not fire and if severe enough finally turns on the check engine light and/or causes it to flash.

Nov 14, 2010 | 2002 Acura 3.5RL

1 Answer

What would cause a cylinder 5 misfire in my 2002 jeep grand cherokee 4.7L


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 ?

May 14, 2010 | 2002 Jeep Grand Cherokee

1 Answer

I have a 2002 TrailBlazer with the straight 6,diognostic check said #3 cylinder was dead or misfiring, also map sensor showed up. #3 cylinder was misfiring, so to test the coil pack I swapped #3 coil pack...


did you replace only one spark plug? that can cause issues because of differences in resistances between cylinders. also, did the map code stay off after replacing
?

Feb 28, 2010 | 2002 Chevrolet TrailBlazer

2 Answers

My 2002 Nissan Altima 2.5 engine has a trouble code P 0302 engine misfire cylinder 2 misfire. Whay could possibly be the cause of this.


possible causes are: faulty spark plug, coil not firing or arcing, injector fouled. start with your spark plugs and if replacement is neccessary, replace with ngk or nd spark plugs.

Nov 08, 2009 | 2002 Nissan Altima

2 Answers

I have a 2002 Ford Explorer V6. Last night I


I somewhat agree with other solutions on this page. I agree that what you are describing is a severe misfire, however there are MANY possible causes for a severe misfire other than just the spark plugs...I recommend diagnosing the CAUSE of the misfire before spending any money "GUESSING" and replacing a bunch of parts.

Also, a code P0300 is a "RANDOM MISFIRE" code which indicates that there is definately more than one cylinder misfiring. Your computer MAY display this code, however, a SINGLE cylinder misfire can also cause a loss of power and the check engine light to flash.
You may just have something like a bad coil on one cylinder that needs to be replaced. This is why PROPER diagnosis is recommended.

Jun 30, 2009 | 2002 Ford Explorer

1 Answer

2002 jeep cheroke misfires on cylinder #4


Check intake gasket and vecuum hoses near intake runner #4. To do this spray carb cleaner at parting line between manifold and block while engine is running. If leaking rpm will dramatically change. A leak will lean out that cyl and cause misfire

Feb 25, 2009 | 2002 Jeep Grand Cherokee

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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