Question about 2007 Dodge Magnum SRT8 Wagon

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I HAVE A 2007 DODGE MAGNUM WITH A 3.5 ENGINE. I KEEP GETTING A #4 CYLINDER MISFIRE CODE. I HAVE DONE A VALVE JOB,CHANGED THE SPARK PLUG,CHANGED COILWIRE,AND THE INJECTOR. WHATS WRONG?

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: 2001 Dodge Caravan Cylinder Misfire

I have a 2001 Dodge Grand caravan Sport i have a misfire in cylinder 2 i changed the spark plugs,wires,coil,map sensor,COMPUTER,had it checked for vacum leaks (nothing),fuel filter.Basically I have almost redone the whole van and i still have the same problem. Can anyone suggest what else i could try! please

Posted on Oct 19, 2009

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emissionwiz
  • 76673 Answers

SOURCE: Misfire cylinder 5 2000 dodge dakota

when u press the gas pedal to go this opens the throttle valve, the idle speed of your engine is computer controlled, this is done by the ISC (idle speed control) airbypass valve, these parts get full of gunk and then get a stalling problem at or near idle, clean them by doing the following, if u don't understand the instructions seek help from your friend.
, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Nov 23, 2009

Mustgo
  • 2359 Answers

SOURCE: MIL indicates cylinder misfire on 1, 3, and 5

Check for

vacuum leaks on intake manifold,

the air tube between the air filter.

intake manifold vacuum hose.

===
clean throttle plate with Berryman carburator cleaner

SEE sample picture HERE
===

Also remove carbon built up behind the EGR valve and the EGR passage tube.

===

Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.

More un-metered air (leaks) will lean out the fuel mixture.

Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.

At idle,just spray and listen for the RPM surge.

The in-rush of carb clearer will increase the RPM on the motor.

Record the problem spot(s) and address it later.

===

EGR carbon built up require 2+ hours to clean from start to finish.

You will need a new EGR base gasket before your start.

Locate and remove the EGR valve after the vehicle is cool down.

Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.

Remove the EGR valve.

Inspect the location of the carbon built-up inside the valve and the EGR passage tube.

SOAK these areas with WD-40 spary.

You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.

RE-SOAK the carbon and let it sit for over-night will also help.

One the last round,pass a shop vacuum of the EGR valve and the passage pipe.

Install the new EGR gasket and connectors.

Allow the vehicle to warm up outdoor to burn up any remaining WD-40.


Take it for a test drive.


Please rate my answer if it's useful to you.


Cheers,

Mustgo

Posted on Dec 19, 2009

SOURCE: 99 dodge caravan #4 cylinder misfires, i replaced

This is a known dodge issue replce the injector!!!!! done deal

Posted on May 07, 2010

  • 249 Answers

SOURCE: Dodge Caravan Fuel Injectors gone bad?

if you can get a good set of used injectors you should change all of them.

Posted on Nov 09, 2011

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I HAVE A 2007 DODGE MAGNUM WITH A 3.5 ENGINE. I KEEP GETTING A #4 CYLINDER MISFIRE CODE. I HAVE DONE A VALVE JOB,CHANGED THE SPARK PLUG,CHANGED COILWIRE,AND THE INJECTOR. WHATS WRONG?


Have you try swapping components such as plugs, coils, with another cylinder to see if the problem follows with the swap? Make sure plug isn't cracked or carbon tracking. How about a compression check, injector pulse? Injector pulse will determine if the circuit is open or if the computer just can't command that injector open.

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need to know that type Engine

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