4.7 intermittent mis fire user load during light throttle no codes
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Its crazy because any other time I touch the gas pedal.truck responds instantly it's only after it shifts for the 3rd time and prior to the transmission going I did change that TPS and grounded the TB and didn't experience any of this
But it is randomly dying during idle 🤔
But it is randomly dying during idle 🤔
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Update. I took the truck out for good solid 35 minutes and at first it wasn't doing that same bucking misfire shutter feeling at light throttle cruising RPMs above 40 mph slowly but surely it started again making itself more pronounced as I maintain the area in which this anomaly occurs. I'm sure if I would have kept driving long enough it would have progressed to the same point I started thinking is it possibly like a drive shaft maybe? Or I don't know. I replaced the two front hubs with aftermarket ones but I don't hear any squealing or free play when I turn the wheel. I mean I'm just throwing s*** at the wall right now to see what sticks my heater core is definitely in need of replacement since I have no heat and I can smell coolant when I turn it on If that would factor in at all. I haven't found any information to suggest that but me not coming across. It doesn't mean it's not out there. That said, aside from that flat spot and strange lack of acceleration in that specific gear band and RPM range, the truck definitely feels a bit better after doing everything , it's still obvious there's something up
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Well took it out. Pushed it a bit harder. Same issue started happening again. I'm totally at my Wit's end. Don't know what to look at. There's no codes popping when I feel it shudder, the gauges aren't moving like nothing out of the ordinary is visible to indicate what direction to start to investigate in
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I mean I guess I'm going to have to do something. I just don't understand how the truck can drive normally with those plugs in it for a whole year. Transmission blows gets replaced and then I replaced the spark plugs representatively and they are the problem only in one specific set of circumstances. I've yet to ever see that happen. I'm not saying it's impossible. I know you very well are an expert in what you're saying. And of course I'm going to have to pursue this angle if I can't resolve it any other way. But before I throw another 50 bucks of plugs I'd like to make sure I'm not just exchanging a set of plugs just because cuz I am that tight right now as embarrassing as that is
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From: Clayton MI
It's one more thing to eliminate... .and sometimes, that's the only option ya got. It isn't setting codes..... so, no help there.... and other parts that it *may* be are quite a bit more expensive.... This is relatively cheap, but, I won't call it 'easy'.... 
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4.7 random mis fire with engine code for cylinder 7 fuel injector circuit.
The saga with this nightmare continues 🤬
So, after having my transmission rebuilt, which I thought would also solve this bucking misfire feeling mistaking the lack of power and bucking for the torque converter going bad since I wasn’t getting any codes . turns out there’s some type of random intermittent misfire at light throttle going uphill and while under load ! Truck starts and idle smoothly occasionally the idle will lope and then smooth out on its own, but for the most part it idles normally if I step on it it will pull . I’ve searched and searched To try to narrow down the culprit and what I come up with is possibly a dropped rocker, but my engine is quiet no ticking whatsoever , a blown head gasket, but my oil is clean and my coolant level is stable. I am getting a little bit of white smoke and a little bit of moisture from my exhaust. It’s not excessive, but it’s also the middle of the winter in New York. I i’ve seen the battery come under question the battery came with the vehicle. It holds a charge it charges normally my voltage level reads correctly when driving and I don’t want to just throw a $230 battery at it especially because I’m tight from having the transmission redone, I had attempted to do the spark plugs multiple coil hold down bolt snapped . All of the hardware under the hood is rusted and seized and I’m horrified to pull the valve covers and seeing as I’m not getting any excessive noise from the head area, I’m trying to refrain from snapping one of those bolts! I zip tied the 3 ignition coils in place to prevent them from moving. Any thoughts or direction since I’m at the point of this truck having a sever negative impact on my life ! Truck is cherry frame is clean and truck looks great putting aside the fact I can’t afford to replace it at the moment ! I had replaced the PCM because the original PCM was not putting out a pulse for the Evap solenoid just felt I should mention that
So, after having my transmission rebuilt, which I thought would also solve this bucking misfire feeling mistaking the lack of power and bucking for the torque converter going bad since I wasn’t getting any codes . turns out there’s some type of random intermittent misfire at light throttle going uphill and while under load ! Truck starts and idle smoothly occasionally the idle will lope and then smooth out on its own, but for the most part it idles normally if I step on it it will pull . I’ve searched and searched To try to narrow down the culprit and what I come up with is possibly a dropped rocker, but my engine is quiet no ticking whatsoever , a blown head gasket, but my oil is clean and my coolant level is stable. I am getting a little bit of white smoke and a little bit of moisture from my exhaust. It’s not excessive, but it’s also the middle of the winter in New York. I i’ve seen the battery come under question the battery came with the vehicle. It holds a charge it charges normally my voltage level reads correctly when driving and I don’t want to just throw a $230 battery at it especially because I’m tight from having the transmission redone, I had attempted to do the spark plugs multiple coil hold down bolt snapped . All of the hardware under the hood is rusted and seized and I’m horrified to pull the valve covers and seeing as I’m not getting any excessive noise from the head area, I’m trying to refrain from snapping one of those bolts! I zip tied the 3 ignition coils in place to prevent them from moving. Any thoughts or direction since I’m at the point of this truck having a sever negative impact on my life ! Truck is cherry frame is clean and truck looks great putting aside the fact I can’t afford to replace it at the moment ! I had replaced the PCM because the original PCM was not putting out a pulse for the Evap solenoid just felt I should mention that
Hello I'm not sure if this will help but I had the same issues you are having but I was randomly getting a check engine light on and off . The truck would run great until under load and then randomly mis fire like crazy and sometimes it was ok. I replaced fuel injectors , spark plugs , tps sensor , done a compression test and finally the PCM. It's only been a few days but no problems since replacing the PCM. I ordered mine from flashmasters and it was truly a plug and play. I know you said you already replaced the PCM so I'm not sure if this will help you. Where did you get the PCM?
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Hello I'm not sure if this will help but I had the same issues you are having but I was randomly getting a check engine light on and off . The truck would run great until under load and then randomly mis fire like crazy and sometimes it was ok. I replaced fuel injectors , spark plugs , tps sensor , done a compression test and finally the PCM. It's only been a few days but no problems since replacing the PCM. I ordered mine from flashmasters and it was truly a plug and play. I know you said you already replaced the PCM so I'm not sure if this will help you. Where did you get the PCM?
Hello I'm not sure if this will help but I had the same issues you are having but I was randomly getting a check engine light on and off . The truck would run great until under load and then randomly mis fire like crazy and sometimes it was ok. I replaced fuel injectors , spark plugs , tps sensor , done a compression test and finally the PCM. It's only been a few days but no problems since replacing the PCM. I ordered mine from flashmasters and it was truly a plug and play. I know you said you already replaced the PCM so I'm not sure if this will help you. Where did you get the PCM?