2004 ford ranger edge has blinking check engine light. also code says misfire on #6. I've had heads reworked, changed coil pack, wires & plugs, engine computer and injectors cleaned. It passes compression test.

diagram showing spark plug wires to Coil pack? - Ford Truck ...

www.ford-trucks.com > ... > Small Chassis Trucks > Aerostar
Apr 8, 2014 - now I cannot find a diagram for the Driver's Side wire positions at the Coil... (the Passenger side wires are 1-2-3, starting from the front of the engine, simple enough); The Coil pack ... But the Driver's Side wires are not in a Sequence of 4-5-6, instead ... 1997 Ford Aerostar 4.0L RWD (purchased May 2012) Camshaft Position Sensor (CMP) wiring pigtail replacement
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Change the coil pack these coils crack underneath and will cause a miss

switch coil around from other cylinders

try getting a manual from www.reliable-store.comit's very helpful in repairing info
or try manualslife.com
very good online places, makes repair much easier

Spark plugs don't fail to fire
Wires last,sometimes,the life of the veh,20 years

Go with bad coil pack or COP Coil #6,which ever applies.

Did you route the new wires ezxactly as they came off the truck? There are service buletins on this issue with doge. Not sure if the same for Ford on this but check. Some plug wires if crossed will cause a P0301-P0308 code or even a P0300 which is random misfire. There may be a service buletin on this for routing and a procedure for doing so! I had to do this on my dodge with the 5.2 ltr. The guy i bought the truck from gave up and i got it cheap this fixed the problem!

havent a clue here ,one cylinder now another missing ,only one thing comes to mind here and thats the coil pack ,check the voltage across the battery with engine running at 1500rpm and if its higher than 15.5 volts of their abouts then the alternator regulator is playing up and this would cause problems with the coil pack or the ECU ,also the radio could blow and lots of bulbs.Other that this i would need to get my greasy hands on it and give the magic hammer treatment

Code P0301
Ignition Coil Pack
Ignition Cable
Spark plug
Clog or dirty fuel injector
Evap canister purge valve
Engine Compression
fuel pressure

you have 3 type of engine for your truck
2.3L 4 cylinder
3.0L 6 Cylinder
4.0L 6 Cylinder

need to know that type Engine

The reason why the service light come on because it is a hard code
not a soft code.

Let me know

I would check your crankshaft positing sensor this may be bad. I would also change your spark plugs and wires becuase they may have got water in them causing a short between them and the head. I would very carefully use air to clean the dirt from your engine compartment first. Autozone runs a free code check for you and this will tell you your problem. To clear your codes and to make the check engine light go off take off your battery cables and wait 30 minutes. You may also have a bad coil which will cause a misfire as well and a 306 error means a misfire to your 6th cylinder so it's probaly this. I hope this information helps.