Always code p0301 in the morning

[oknopa]

I just purchased my Ford 2002 explorer sport Trac, and previous owner replaced the coil pack,the sparks, new fuel pump and replaced the gaskets on the intake manifold...but I am still get the code p0301 in the morning.After couple miles I clear the code and the truck runs fine the entire day.
Today I got the p0301,p0300 and p0171....after restarting the car all codes disappeared and the car runs fine.

What I am missing?

 

[DILLARD000]

p0171 = Bank1 Too Lean
p0300 = Random Multi Cylinder Misfire
p0301 = Cylinder1 Misfire

Suspect the "new" CoilPack or Plugs or Wires, NEW is not equal to GOOD:
~ did prev owner use OEM parts & correct MotorCraft\AutoLite Plugs+Gaps? NonOEM are known issues.
~ pull+inspect+ohmcheck the CoilPack+Cylinder1 Wire+Plug
Could still have an Intake Vac leak;
~ use CarbCleanerSpray or a SmokeGen to find leaks
~ check PCV Hoses for cracks+leaks..
Click here for more info on Plugs+Wires+CoilPack.

 

[oknopa]

p0171 = Bank1 Too Lean
p0300 = Random Multi Cylinder Misfire
p0301 = Cylinder1 Misfire

Suspect the "new" CoilPack or Plugs or Wires, NEW is not equal to GOOD:
~ did prev owner use OEM parts & correct MotorCraft\AutoLite Plugs+Gaps? NonOEM are known issues.
~ pull+inspect+ohmcheck the CoilPack+Cylinder1 Wire+Plug
Could still have an Intake Vac leak;
~ use CarbCleanerSpray or a SmokeGen to find leaks
~ check PCV Hoses for cracks+leaks..
Click here for more info on Plugs+Wires+CoilPack.

View attachment 3314

Thanks, you always very specific with your answers, I like this..

 

[DILLARD000]

Let us know what you find.

 

[oknopa]

i reconnected all cables, includet the coil pack. I will order new elbows for the air lines...so far, just in the morning the code 0301 showed up and after 10 miles he disappeared..randomly...
i will check the spark one cylinder one and maybe replace the o2 sensor (up stream)..
I am not sure if the coil pack is motoraft....

 

[DILLARD000]

Your CoilPack in the pic above appears to be same color as a MotorCraft;
of course the label\number is on the backside where you can't read it!

 

[oknopa]

Ok, good to know, but still always when the engine is cold the code 0301 coming up and later on it's disappear..

 

[DILLARD000]

Yep, would pull that plug & inspect.

 

[oknopa]

ok, here the spark plug, i don't think is bad, and the gap is right.......still when the engine is cold i get P0301, lol....this Trac keeps me up and running..

 

[DILLARD000]

What's the Make+Model of the plug?
Should be MotorCraft#agsf22fm\sp500 or original maker Autolite#app103
Others are known to cause problems. If plugs are correct + gaps are right,
time to inspect the Wires & pull CoilPack to inspect+OhmCheck.

 

[oknopa]

it's one autolite app103, so now i will inspect the wires. Today again, in the morning code 0301, the 0301 and 0171 and after a wile i clear the code and drive smoth as anythink else. So strange....

 

[DILLARD000]

Sounds like whatever is causing the issue, is sensitive to temp, warms up & works ok.
Give Wire#1 & CoilPack a good inspection; see my previous pic for the OhmCheck info.
Another possibility is FuelInjector#1; could try bottle of InjectorCleaner & PremiumGas fillup (money, money!).

 

[oknopa]

Sounds like whatever is causing the issue, is sensitive to temp, warms up & works ok.
Give Wire#1 & CoilPack a good inspection; see my previous pic for the OhmCheck info.
Another possibility is FuelInjector#1; could try bottle of InjectorCleaner & PremiumGas fillup (money, money!).

will check in deeper to all this, i am not aware, but it's drives me nuts, lol....btw. what is one good obdii scanner for this ford, i used for my mercedes icarsoft, but this is more for european cars..any advise would be cool..i am still like to read some live data..

 

[DILLARD000]

For many years I kept a basic OBD2 Scanner that would read & reset only the StandardSAE TroubleCodes;
Now also have the items below, allowing more extensive access to TroubleCodes, Signals & Configurations:

OBDLink#MX+ Module ~ WirelessBT ~ AndroidPhon With OBDLinkApp + ForScanLite + TorquePro
* Reads+Resets+Graphs both StandardSAE & ProprietaryOEM Data
* DashBoardMode for viewing Temps & Signals while Driving
* Used for Routine Maintenance & DailyMonitoring

OBDLink#EX Module ~ CabledUSB ~ WindowsLapTop With OBDLinkWiz + ForScanLLE
* Reads+Resets+Graphs+Configures both StandardSAE & ProprietaryOEM Data
* Faster & easier than ToggleSwitch ELM327 ComsModules
* Used for InDepth Maintenance & Configurations

Above ODB2 items are personal preference; there are many options which vary widely in cost & function.
An Ohm+Volt+Amp\MultiMeter is also handy+essential; using the same digital Fluke meter 30years+ now.
Click here for more info on above items.