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2004 Sorento began with code P0305, cyl #5 misfire. Inspected and replaced plugs, wires, and coil pack on cyl #2. Repair shop told me cyl #5 injector bad so they replaced. Still has misfire.I suggeste

Replaced plugs, wires and coil pack on #2 which fires cyl #5. Code P0305 continues to prompt with misfire. Repair shop assured me it was injector in cyl #5. Replaced it and still misfires. I suggested checking the crank sensor since it detects misfire. I need help before shop eats me alive financially.

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If you had code P0305, I don't know why they would have done anything to the #2 cylinder but if they have already replaced the plugs, wires and injector; here are a few more items to check:
1) Check connections from ECM. Look for any corrosions or bent/broken pins.
2) Check the fuel line pressure
3) Check the engine compression
4) And if the above are good, then you will probably have a defective ECM

Posted on Nov 28, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 04 Sedona 3.5 cyl #2 misfire replaced coil,back again 5 mos later

How many miles on the plugs and wires? Misfire can be caused by either plugs or wires, after that check the injector for that cylinder. Let me know what u find. Curt

Posted on Mar 11, 2009

  • 5 Answers

SOURCE: 2003 Chevy Venture misfiring

The injector is a good possibility, although you should check for spark in the wire first, as the electrical is the weakest link in the system. Put a spare plug in the end of the wire with the plug resting on metal, then have someone crank the van to see if you have spark that far, test and replace spark plug, (do not get shocked!) then look into a new injector or a good cleaning.

Posted on Jul 17, 2009

  • 1 Answer

SOURCE: Have a 2003 Taurus, 3.0 engine that has a misfire

did you check the injector pulse on that cylinder and it also could be the pcm , i had a taurus and a sable with good coils stop firing 2 cylinders and it was the pcm ,the code it gave was secondary coil but changed the pcm and it worked fine

Posted on Aug 29, 2009

tjspear
  • 66 Answers

SOURCE: i put seafoam in a 01 mits diamante(oil) drove fine now has code

if you have a coil on plug system, or a waste spark system.... swap coils and see if the miss follows the coil.... voila... that'll fix it.

Posted on Sep 12, 2009

roniecon
  • 6826 Answers

SOURCE: 2003 kia # 3 misfire/ runs rough

Replace the coil for number 3 cylinder.

Posted on Nov 11, 2009

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Misfire on #5 cyl


2005 Dodge Grand Caravan 3.8L engine misfire on cylinder 5.

answers.edmunds.com > Edmunds Answers
Aug 14, 2012 - MIL on; cylinder 5 misfire; most noticeable at idle in gear ... This could be caused by an EGR valve that is sticking partly open and not closing ...

OBD-II Trouble Code: P0305 Cylinder 5 Five Misfire Detected

www.obd-codes.com/p0305
A P0305 code means that the the car's computer has detected that one of the engine'scylinders is not firing properly. In this case it's cylinder #5.

ODB Code P0305- Misfire in #5 Cylinder - 2008 Dodge ...

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Feb 22, 2011 - ... do something with a misfire in the #5 cylinder of my V6 4.0L engine. ... ODB Code P0305- Misfire in #5 Cylinder on 2008 Dodge Grand Caravan .... My2005 dodge grand caravan jerks when it shifts into gear what could it be.

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Dec 05, 2015 | 2005 Dodge Grand Caravan

3 Answers

My 1996 Taurus when I press the gas pedal when cold it sputters and lacks power. When it warms up it runs great.


Possible causes - Faulty spark plug 5
- Clogged or faulty fuel injector 5
- Faulty ignition coil 5
- Fuel injector 5 harness is open or shorted
- Fuel injector 5 circuit poor electrical connection
- Ignition coil 5 harness is open or shorted
- Ignition coil 5 circuit poor electrical connection
- Insufficient cylinder 5 compression
- Incorrect fuel pressure
- Intake air leak

The P0305 code means that the cylinder 5 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 5. If the problem persist more tests needs to be done to diagnose problem, see "Possible Causes



When is the code detected? Engine Cylinder 5 is Misfiring.


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 Engine Control Module (ECM) can determine that a misfire is occurring.



Oct 21, 2014 | 1996 Ford Taurus

2 Answers

2008 Cadillac CTS returning P0303 after replacing spark plug and coil pack


Error Code: P0303
Description:
Cylinder 3 - Misfire Detected
Possible Cause:
Wiring harness, igniter and fuel injector connectors.
Ignition system. (Spark plugs gaps)
Fuel injector No. 3.
Fuel pressure.
Running out of fuel.
EVAP canister purge valve.
Evaporative emission system.
Low compression, cylinder No.3. (check valve clearance and throttle plate for excessive wear)
Engine control module (ECM).

Feb 27, 2014 | 2008 Cadillac Cts

1 Answer

Check engine light is on with a code p01399 and p0301 - p0305


P1399 - Acura Random/Multiple Cylinder Misfire Detected.

P0301 and P0305 is refer at cyl #1 and #5 misfiring.

On most Honda's when you get a misfire happening across the whole engine like that there are a few likely issues. the ignition coil if it's a single coil style or the connector at the distributor. They also have some issues with EGR's and plugged ports which can mess with the fuel trim numbers. It's important to check the fuel pressure and if possible a timing offset spec from the scanner whenever you're dealing with misfires on any vehicles Honda or not and determine correct pressure and flow whenever possible.

A code P0301 and P0305 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Possible Solutions:
* If there are no symptoms, 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.

Keep us updated.

Sep 06, 2011 | Acura TL Cars & Trucks

3 Answers

I have a 2005 sienna with 100,00 miles i got hit with multi misfire codes. I changed spark plugs but now i have error P0305 cylinder #5 misfire. i swapped out coils to see if the misfires moves but no...


With a misfire...its usually plugs, plug wires, and coil packs.
Sounds like you've done this...so, make sure plug wire is seated real well at each end.
(its usually the connection points that get corroded or dirty...or a crack in the wire insulation allows the spark to shoot to the nearest ground.)

I have seen the plugs get fouled out by water entering the cylinder...rare, but happens.

Hope this helps...

Aug 28, 2011 | 2004 Toyota Sienna

1 Answer

Number 5 misfire


Cylinder #5 Misfire Detected
A P0305 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #5.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present


Causes: A code P0305 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Possible Solutions:
If there are no symptoms, 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.

Hope this helps.

Jun 25, 2011 | 2004 Mazda MPV

2 Answers

1998 Park Avenue: it may not be getting fuel how can i verify this??...


the easiest and fastest way is to listen for pump activation when you turn you key to the on posistion turn your radio off turn the key to on (just before the point of starting)and you should be able to hear the humming or vibrating if you dont then you are not getting fuel. if the pump is working or you cant tell if it is go to the fuel rail look foe a cap that looks like a valve stem cap take this cap off and push the stem in if you get fuel then you know that you donthave a fuel problem if you dont get fuel to the rail then its probably the pump. hope this helps you.

May 07, 2010 | 1998 Buick Park Avenue

2 Answers

Intermittant p0302,p0305 codes misfires


A code P0305 may mean that one or more of the following has happened:
· Faulty spark plug or wire
· Faulty coil (pack)
· Faulty oxygen sensor (s)
· Faulty fuel injector
· Burned exhaust valve
· Faulty catalytic converter(s)
· Running out of fuel
· Poor compression
· Defective computer

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, especially given you had water issues. 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.

Nov 10, 2009 | 1996 Oldsmobile Cutlass Ciera

2 Answers

Misfires and codes PO316, PO306, & PO305 popped up on the diagnostics check. What needs to be fixed based on that?


You will need to replace no 5 and no 6 coil pack and spark plugs. P0316 is random missfire that computer could not detect the cylinder that was causing it,just knew one was missfiring.
Coil packs are common concern on these vehicles. Can get oil leak into the coil pack wells and may also even get moisture into them.
If yours is a 3.9L it may be involved in owner satisfaction program 07M07 or 07N09 in which they will cover them under the program for up to 10yrs or 100000 miles which ever comes first.

Mar 16, 2009 | 2003 Lincoln LS

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