2002 ford ranger 3.0 is missing on 2 cyl plugs ok injectors ok new coilpack

Part 3 -How to Test the Ignition Module and Crank Sensor ...

easyautodiagnostics.com > Ford > 2.3L

Mar 1, 2012 - Spark plugs for cylinders #2 and #3 get spark at the exact same time. ...voltage -12 Volts) to both individual ignition coils within the coil pack. ... Ford Mustang or Ranger (or 2.3L Mazda B2300), this is what you'll need ... for this 'Switching Signal' at the coil pack... but you can also test this ... 1991, 1992, 1993.

How to Diagnose a Misfiring Cylinder (2.3L Ford Ranger ...

troubleshootmyvehicle.com > Ford > 2.3L

Apr 3, 2012 - Bad Fuel Injectors can cause a Misfire Condition. ... the ignition system on the 2.3L Ford Mustang or Ranger consists of 2 ignition coil packs, ...

2002 ranger misfire rough idle - Discussion on Topix

www.topix.com > Ford Ranger

Jul 27, 2007 - My truck is giving the code misfire in number 4 cyl. I replaced my spark plugs, Wires, Coil packs (both of them) and all my fuil ... three (3.0L v6) go bad, the fuel/air mixture gets messed up. Judged: 2. 2 ... My truck runs rough only at idle. ...code for ford ranger 2002, 2.3 5speed. truck runs like a champ but that ...

Extremely stumped! I need the best and brightest 1994 Ford ...

answers.edmunds.com > Edmunds Answers

week injector

Test all injector. Must be with in specification. If not replace it.


Mai Lor

The following is a list of the more common causes in most vehicles:

-bad spark plug(s), wire(s), coilpack

-out of time engine (timing belt jumped teeth)

-bad fuel injector(s)

-low compression on cylinder(s), stuck valve(s), broken valve spring(s), piston damage
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BMW ICOM software

Could be a long list of choices.
Nothing special happens when the ac is on other than the extra load on the engine.
You probably have a slight miss-fire most of the time and the ac makes it worse.
A miss-fire could be a faulty spark plug, wire, coil pack, or injector among other things.
Is the check engine light on ?

1-try some Lucas Engine Clean . 2-Change wires and plug

Did you gap the plugs to correct setting? You may want to check the fuel filter and maybe the pump-maybe low fuel pressure.

ENGINE RUNNING LEAN CHECK FOR VACCUM LEAKS. BAD SPARK PLUGS WOULD MAKE ENGINE RUN RICH.

check for vaccum leaks, gasket leaks, injector leaks! and test coil packs to see if module is good and you get spark to every cylinder and see if you get fuel to every cylinder.
How many miles do you have? Is the motor tired?

possible bent push rod or colapised lifter
open the valve cover and start the truck make sure all the rocker arms are moving