Question about 1998 Ford Expedition

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Need diagram of where #2 plug is. got a code saying #2 is misfiring and left bank is running lean

My rig is running a little rough, has a slight tick noise, check engine light comes on and flashes, ran codes said #2 misfire and left bank running lean

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This is the diagram for the 4.6 1998 Ford Expedition.( Notice the numbers 1-2-3-4 spark plugs are on the left side if you are facing the front of the vehicle.) Please rate my answer if you were helped.
Thanks


need diagram of where #2 plug is. got a code sayin - z

Posted on Mar 21, 2014

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2006 cts 2.8 making loud ticking noise ,running rough and has misfire codes po300,301,303,305


codes p 300 is a random/ multiple misfire===causes spark plugs---HT leads ---injectors/s--ignition coil/s--low compression---wiring
codes p 301,303,305 are misfires detected for no 1,3 5 cylinders === causes listed are engine mechanical fault---wiring---ignition/fuel systems ---injectors---ECT/MAF sensors---ECM
You do not mention if this is a v6 engine in which case no 1,3 5 will be all in the one bank head
With the loud ticking noise that amounts to a mechanical fault associated with that bank
could be loose valve seat inserts , cam lobes failure or cam follower failure or hydraulic lifters problem even loose cam shaft bearings / caps
I would be inclined to remove the rocker cover and check for metal , loose bolts , excessive valve clearance before I went plugs etc
the main indicator for the answer is the loud ticking noise which indicates a valve train problem which will cause the rough running

Jan 15, 2016 | Cars & Trucks

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2004 f150 runs rough


check the HO2s and HO2 sensors as the tuning of the engine is out because of erratic sensor messages to the ECM. Misfires can also be from faulty injectors or low fuel pressure in the fuel manifold . The rattle under acceleration will be detonation from a problem with the air/ fuel / timing because the ECM is not getting constant readings from the sensors to be able to adjust everything

May 31, 2014 | 2004 Ford F150

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Cylinder misfire spark


how many miles on the odometer, mines 95k.
ah a v6, P0306 is #6 misfiring. 2.5L V6
300 is all 6 misfiring.... oops.
it is. for sure.
misfire is cause by many things, only 3 in physics, but many real world. (compression + spark +fuel rates)
i works this easy, way.
i have a full scan tool not just a code reader (near useless it)
i make sure my V6 (I have an 04) holds closed loop at idle and 2500 rpm. i f not , fix that first.
easy, it is. just look, bingo, Open loop, (out of control)
fueling is out of control.
but, first i do that tune up. in the manual, 60k , 120k, 180k, see?
do that first. , spark plugs dont last foreever nor filters.
then i replace both front 02 sensors at 100k miles. there design life.
V6 has 2 front sensors. (rear can , just sit and be ignored)
if it misfires. now, i toss a coin.
compression or fuel pressure.
i can do both in 30min flat but i toss coin lands on fuel.
i check fuel pressure and its.
60psi, fuel regulator is bad,
20psi, same, or bad pump or bad 12vdc to pump, 8v to pump is bad wiring.
one thing that helps is to find out if the engine is running too rich or too lean.
and if there are cracks in the exhuast near the 02 sensors.
i force the EFI rich and lean watching both 02 sensors in my scan tool
to see if i can force them lean or rich.
on the v6, we can introduce air leaks, to the plenum.
this will cause lean, and the o2 most react to my lean forcing
or its dead.
i can force richer, if i suspect lean or 02 shows lean, by
removing the Fuel pump regulator hose (vac) and plugging hose fast.
this causes the FPreg to go to high pressure. max.
causing RICH>
i watch the 02 and see it go rich, if not the 02 is bad or you have exhaust leaks, or dead cylinder causing the 02 to fib.
you have 2 banks, and both banks are running off 1 MAF
so you can look at both 02 sensors (front) B1S1 and B1S2
and see if both react the same. to my forcing's.

i dont think you have 3 bad cops out 6. no.
if any cylinder misfires on bank one, then bank 1 o2 goes nuts
same with the Bank 2. this can aid troubleshooting having 2 banks.
the MAF can not lie for 1 cyclinder nor one bank
the 02s can lie for each bank,
both are key to diagnosis.
let me give an example say
injector 1 leaks.
causing 301s
v6
246
135 left
this is your lay out.
my guess is its not lost compression (no test guess, mostly useless)
not 2 bad cops one on each side will cause 300s
not one bad cop. as other side would be ok.
not one bad injector.
my guess, is fuel pressure is way off.
but///???
or maf running lean (dirty, spary clean it 12inches away not close)
low fuel pressure
too high fuel pressure.

all comments are for engine with 60k mile service done,
60k, 12ok, etc.



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Po174


A P0174 lean code for bank 2 is the cylinder bank on the LEFT (driver) side of the engine on Ford vehicles with a transverse-mounted V6 engine and front-wheel drive. This code is not set on four cylinder engines (no bank 2).
WHAT A LEAN CODE MEANS
A lean fuel condition may exist if the engine is sucking in too much air and/or the fuel system is not delivering enough fuel. If bad enough, a lean fuel condition may cause lean misfire, a rough idle, hesitation or stumble when accelerating, and/or poor engine performance . Unmetered air can enter the engine through a vacuum leak, a dirty airflow sensor that is not reading airflow accurately, an EGR valve is not closing and is leaking exhaust into the intake manifold, an EGR valve that is allowing too much flow (because the EGR differential pressure sensor that monitors EGR flow is faulty and is under-reporting EGR flow).
If the problem is not enough fuel, the underling cause may be a weak fuel pump, restricted fuel filter, leaky fuel pressure regulator or dirty fuel injectors.

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I have a 2000 Hyundai Sonata that runs rough when you start it up. I hooked a code reader to it and it said that system was lean on bank 1 and multi misfire and not reading 02 sensor on bank one. I have...


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2002 mazda mpv idle rough codes say lean banks 1&2 plus random multiple misfire


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2003 Ford Ranger 4x4 extended cab- diagnostics checked and got these codes- P0171, P0174, P0300, P0316. Can you tell me what they mean?


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For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing.
P0300---- Random/multiple cylinder misfire
P0316---- Cylinder misfire at start up---- first 100 revolutions.
On those 2 codes, you have to do some testing to find out why there is a misfire.
Possible causes:
dirty/malfunctioning injectors
weak coil pack
fowling spark plugs/wires
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Location of O2 sensor in bank 2, 99 5.4 expedition, running lean


I have a ford 2003 windstar that was running very rough when cold and almost stalling. engine light came on. went to autozone and they read the codes for free and told me it was running lean on Bank 2 also. i came home searched for the O2 front sensors online using the info autozone gave me. there are 2 front sensors on my car that need to be replaced at the same time. look for ones that have a direct plug in and don't need wire splicing. the ones without the wiring harness are cheaper but more of a pain, i think.
they were fairly easy to replace. getting access with the wrench was the worst. reset the light by disconnecting the battery for a few minutes. seems fine now and the light hasn't come back on.

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