Stuck and need help with a weird misfire issue

[410explorer]

So heres some background 96 4.0 xlt 4wd 197k miles i have replaced all the spark plugs with genuine motorcraft. And pkug wires . Also replaced all 6 injectors the upper intake gaskets and plenum gadket. Aswell as the cam shaft position sensor altenator the pcm the gem module and IAC valve and for 2 days it ran like a dream then on day 3 it starts sputtering shaking running ruff and lacking power then the cel starts to fkash my codes are misfire cykinder 1 and oxygen sensor bank 1 sensor 2 ( the one right after the converter ) so i tested for spark with a spark tester and listened to the injector for clicking and they are but still this misfire tgats when i started to worryed it was sonething major wrong mechanicaly so i did a compression test 150 psi in cykinder one my lowest cylinder is number 4 125 psi i cannot figure out why its missing and running like crap after all the work money n parts it ran great for 3 days lol how can i have a misfire on cykinder one when i have good cimpression fuek and spark so finally i removed the soark plug and cranked the motor to see it spark myself but it is cylinder 1 is sparking but i did find a bad spark plug ( new from rock auto ( on cylinder 4 repkaced it now it soarks but all the symptoms are still there it changed nothing please help

 

[410Fortune]

What was the code for the 02 sensor?

Misfire code is usually caused by an injector issue
So it’s possible your new injector is bad or got plugged up

If you clear the code how quickly does it come back? If it comes back very quickly like in the first two drive cycles then it is very likely an injector issue. Just because you can hear it clicking does not mean it is delivering fuel properly.
I would remove the intake and fuel rail and have a look see. Sometimes a piece of debris will get loose when you did all that work and will find the back of the injector,’clogging it. Sometimes new injectors are bad right out of the box…. Especially cheap aftermarket parts store ones

So what are the codes? And did you closely inspect your new plug wires? Make sure one did not get melted

 

[410explorer]

What was the code for the 02 sensor?

Misfire code is usually caused by an injector issue
So it’s possible your new injector is bad or got plugged up

If you clear the code how quickly does it come back? If it comes back very quickly like in the first two drive cycles then it is very likely an injector issue. Just because you can hear it clicking does not mean it is delivering fuel properly.
I would remove the intake and fuel rail and have a look see. Sometimes a piece of debris will get loose when you did all that work and will find the back of the injector,’clogging it. Sometimes new injectors are bad right out of the box…. Especially cheap aftermarket parts store ones

So what are the codes? And did you closely inspect your new plug wires? Make sure one did not get melted

I did not wrire the 02 sensor code number down but it was o2 sensor heater circut code for bank 2 which is currently removed misfire cylinder one and rich bank 2 i visually inspected the wire and plug on every cylinder today and verified spark i removed the fuel rail and all 6 injectors today and moved the injector from cylinder one to cylinder 4 i noticed some of the o rings got a bit chewed like i didbt have them perfectky lined up on install so i replaced the orings and very carefully lined every injector uo made sure they where all seated properly and followed the tightening order for fuel rail and intake i just fired truck up its still stumbling and sputtering i cleared the codes when i removed the negative cable to work im trying to see what comes back up if its a injector issue the cykinder thats missing you change since i changed the position of the injector and the misfire code takes a bit to put up it doesn't happen fast takes a few drive cyckes and does not usually blink unless i accelerate to highway speed

 

[410explorer]

What was the code for the 02 sensor?

Misfire code is usually caused by an injector issue
So it’s possible your new injector is bad or got plugged up

If you clear the code how quickly does it come back? If it comes back very quickly like in the first two drive cycles then it is very likely an injector issue. Just because you can hear it clicking does not mean it is delivering fuel properly.
I would remove the intake and fuel rail and have a look see. Sometimes a piece of debris will get loose when you did all that work and will find the back of the injector,’clogging it. Sometimes new injectors are bad right out of the box…. Especially cheap aftermarket parts store ones

So what are the codes? And did you closely inspect your new plug wires? Make sure one did not get melted

So i wanted to get back to you with the actual codes after driving say 20 miles just around town i have p1132 p0141 p0401 i apparently didnt have all 6 injectors perfectly lined up the first go and i chewed up two o rings but replaced all of them its better but still not right i noticed on my scanner data one of my o2 sensors particularly sensor 1 bank 2 is not fluctuating like i would expect i dont think that alone coukd cause it to run this bad and fuel trim numbers look decent its not as ruff but still lacking power and still sounds off

 

[410Fortune]

Absolutely those two codes will cause it to run like crap
We need to get them fixed


141 is 02 sensor heater circuit failure
Check the fuse first
Inspect bank 2 sensor 1 wiring to it and make sure all checks out
If everything checks out it’s time for an 02 sensor


Bank 2 is drivers side


These sensors are pre heated they use battery power to heat up
As we know anything that heats up wears out
Heater circuit failure is 9 times out of 10 a bad 02 sensor

The 401 code is insufficient flow dpfe
Inspect egr hoses for cracks holes and connections
Inspect dpfe wiring
If all checks out consider getting a new dpfe
They are cheap enough and this code is often caused by a bad one if all the plumbing is good

The 02 sensor reading are quite necessary for proper running half of your engine is not able to adjust air fuel spark as needed
Think of an engine as an air pump
It meters air coming in and air content leaving and adjusts things accordingly. The mas sensor and 02 sensors are the most important piece of this puzzle

Fuel injector o rings should be lubed with Vaseline during install
Wiggle the fuel rail side to side and press firmly to seat them

Let us know what you find!

 

[410explorer]

Absolutely those two codes will cause it to run like crap
We need to get them fixed


141 is 02 sensor heater circuit failure
Check the fuse first
Inspect bank 2 sensor 1 wiring to it and make sure all checks out
If everything checks out it’s time for an 02 sensor


Bank 2 is drivers side


These sensors are pre heated they use battery power to heat up
As we know anything that heats up wears out
Heater circuit failure is 9 times out of 10 a bad 02 sensor

The 401 code is insufficient flow dpfe
Inspect egr hoses for cracks holes and connections
Inspect dpfe wiring
If all checks out consider getting a new dpfe
They are cheap enough and this code is often caused by a bad one if all the plumbing is good

The 02 sensor reading are quite necessary for proper running half of your engine is not able to adjust air fuel spark as needed
Think of an engine as an air pump
It meters air coming in and air content leaving and adjusts things accordingly. The mas sensor and 02 sensors are the most important piece of this puzzle

Fuel injector o rings should be lubed with Vaseline during install
Wiggle the fuel rail side to side and press firmly to seat them

Let us know what you find!

Hey sorry i didnt see the huge error in my paragraph until this morning and fixed it but hou obviously still understood but i apologize. So the p1132 code is most likley oxygen sensor related? Since i have replaced the injector o-rings and more carefully made sure every single one was definitely in place and following the recommended tightening sequence that was what made it better but not right i noticed the oxygen sensor reading last night when i hot home just after dark i have a downstream 02 sensor on hand what are the chances i could use it for the upstream? And the egr valve was leaking and is blocked off utilizing a plate beteweem the egr valve a tube u have a new eger valve but i cannot get that damn rusty ass big nut to break free so i blocked it off to clear up the huge vacume leak it was causing when i got the truck

 

[410Fortune]

P1132
Lack of switching bank 2 sensor 1

Same sensor different code
Need to fix the codes before you can expect this sucker to run properly.

Hope your converter replacement goes smoothly! They can be a pita to replace without a torch and welder!

 

[410explorer]

P1132
Lack of switching bank 2 sensor 1

Same sensor different code
Need to fix the codes before you can expect this sucker to run properly.

Hope your converter replacement goes smoothly! They can be a pita to replace without a torch and welder!

I understand i was confused about the p1132 it just comes up on my scanner as "manufacturer controll" now this morning i also have p1133 basicalky same code i think your 100% right the oxygen sensor that communicates to the computer is failing causing issues this started out as a misfire the misfire seems to be gobe and the idle is way smoother no more shaking but still the surging and lack of power apparently more then one system failed at once

 

[410explorer]

Also the converter removal was a pita the nuts where rusted on i had to grind the ends off and hammer at it but its off i just have to drill the bokt holes out and install but i may switch the oxygen sensor out first today

 

[410Fortune]

Those exhaust studs are a pita

I used to grind both sides flat and punch them out with an air chissel

That is until I learned a better method that works is to slot the plate they are on. Meaning you cut a slot in the metal next to the stud, then they pop
Right out, can easily be replaced with bolts and washers

These are some
Hardened studs I’m no sure you will have much luck with a drill,’depends on your drill bits and access. The “slot” technique is for sure the way to go… after years of battling these flanges the internet came through and now I have a new trick

Use a grinder, slot the flange up to the stud on all 3’sides and the old studs pop right out

 

[410explorer]

Those exhaust studs are a pita

I used to grind both sides flat and punch them out with an air chissel

That is until I learned a better method that works is to slot the plate they are on. Meaning you cut a slot in the metal next to the stud, then they pop
Right out, can easily be replaced with bolts and washers

These are some
Hardened studs I’m no sure you will have much luck with a drill,’depends on your drill bits and access. The “slot” technique is for sure the way to go… after years of battling these flanges the internet came through and now I have a new trick

Use a grinder, slot the flange up to the stud on all 3’sides and the old studs pop right out

Damn thats a good idea thanks man