Miss fire on 1 and 4 07 Dodge Caravan 3.3 engine. changed coil pack, plugs, wires,cam sensor and crank sensor.the coil is firing a real weak spark. barely visible just on 1 and 4

FORD ESCORT.THE TWIN CAM, DOHC.ENGINE.
do not mix up coil pack 4HV wires or wrecks firing order
THE PCM + PACK SETS FIRING ORDER.
WIRED WRONG THERE IS NO RUNNING, ENGINE.
I WILL POST A BETTER PACK FROM NGK
do not change HV wires unless 1 at a time.
if one HV wire fails 2 plugs go dead.
this tech is called wasted spark.
the misfire is real and plug 1 and 3 are dead
flashing CEL means CAT melts next with flood of raw fuel landing on the CAT input.
first learn the 3 rules of spark engines
good engine, 150psi or more, and cam belt not SLIPPED.
next is spark if spark is good fuel is last
cant burn fuel on dead engine or dead spark or timed backwards.
301means weak combustion#1ONLY THAT>
why is next. and that takes tools GOT TOOLS?
99% do not here and want 50 guesses.
if used a timing light (spark tool) and timing is wayoff
the belt was put in wrong
or coil pack wired wrong.,OMG not both, sigh./

ZX2 ACTUAL

1998-2003 2.0 L (1989 cc) Zetec, DOHC I4, 130 hp (97 kW) at 5,750 rpm, 127 ft?lbf (172 N?m) at 4,250 rpm, redline 6,500 rpm, 7,200 rpm rev limiter ZX2
1342 FIRING ORDER, AND 1 AND 4 FIRE AT ONCE.
AS DOES 3 AND 2
INSIDE ONLY 2 COILS
MY 1975 HONDA CB750 HAD SAME THING. BACK THEN,.

CLEAR AS DAY HERE, IF DONE WRONG.

You Changed a lot of parts but did not say weather or not the engine is firing or not. if its not, Take an extra spark plug. pull one of the wires from a cylinder and put the plug in it. lay it on the engine block or frame so the plug is touching metal. have someone crank the engine over and see if the plug has spark. This is the easy way if you don't have a tester. MAKE SURE you are NOT touching the plug or wire while cranking the engine over or it will give you one heck of a Shock.

These vehicles are notorious for having shared ground wires that crack or rot and give poor connection to the PCM (power control module)or one of its sensors.

check the ECM

Sounds like the crank shaft sensor. But could bet mass are or a couple others. New cara are a pane in the rear. Best of luck.

Do you have exhaust leaks before the exhaust converter?

Do you have a blocked exhaust converter?

Did you test the upstream O2 Sensors?

Did you check fuel pressure at the motor?

Are the wires on correctly?

Is the EGR Valve stuck open

This is a quick explanation:

1996 Dodge Caravan
3.3 liter




The big rectangles are referencing the engine, the cylinder associated to it's "firing" are the colored circles, and the are also the location of the spark plugs....the smaller lego-looking block is your coil pack. The spark plug wires run from the coil pack to the spark plug on the engine. The wires match 1 to1 or black to black...and so on....

When these are matched to each cylinder/spark plug and it's wire leading to the matching coil pack position, this is it's "firing order". If one of the wires is "crossed" meaning, not 1 going to 1, then the engine will "miss-fire".

its possible there are multiple coil packs usually one for each bank or one for every two cylinders. Or check for a ignition control module

CHECK THE , PCM AND IT CONNECTIONS . IT COULD BE A SHORT ON THE WIRE HARNESS THAT,S CONNECTED TO THE TCM. HAD THE SAME TROUBLE .

check pulse on coil pack conector with noid light ,remember cylinders 1&4 fire at the same time. check pulse while cranking. most likely you have a bad computor or a broken wire

i got a1996 dodge intrepid 3.5 L .the spark plugs 1,3,2 works but 4,5,6 do not work. i changed the spark plug wires, the coil ,the crankshaft sencer and the camshaft sencer.what else could cause this not to start?