New plugs,boots 2 new coils
The
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM), which is very rarely the problem. Other
basic checks must be done as well such as mechanical problems with
the engine as well as engine state of tune and mileage on the engine.
The transmission can have mechanical issues as well such as no gear
engagement at all or a failed pump or other pressure related
problems.
SOURCE: 91 Jeep wrangler New everything idles rough, no Power then dies
you check for miss how is compression
SOURCE: P0302 #2 cylinder miss fire code. Replaced plugs
I have a 1999 ford escort 2.0, its got a miss on cylinder 3 and 4. I changed the wires and the coil pack but its still missing. When scanned I get code p1506, p0303 and p0304
SOURCE: O2 Sensor Problem?
yes an o2 sensor can cause those symptoms so can a minor vacuum leak --bad ignition wire -clogging fuel filter --sticking egr valve etc.
SOURCE: My 2000 Alero 2.4 has a very rough idle while
I have the same problem and I found it today. On the front of the engine there is a 4 inch l black 1/4 inch hose that goes from the air intake to a sensor. Its right in the very front it might blend in with some wires and other hoses but they are bigger. That hose is probably coroded and falling apart. Look for it when the engine is running and there will be a suction on that hose and it will be sucked flat instead of round. If you touch it the car might die or sputter even more. Replace that hose with any tubing and away you go.
SOURCE: 2000 toyota 4runner pulling a random misfire in
I have a 2000 4Runner 4 cyclinder 2.7 misfires at idle only.
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Some 2005 5.4 especially Expeditions have defective fuel injectors from the ford vendor many years ago & are starting to stick open. Just went thru that last week with a relatives suv. I like too replace the front O2 Sensors on all fords at 100,000 before they fail
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