2018 ram 1500 5.7 stalling and bucking rich

[Wild one]

Yes I run small non foulers on the upstream and longer ones on the down stream . And yes ive installed multiple grounds one from battery to body , one from frame to motor , and added another one to the pcm mount to body

And I was going to check the vvt valve before putting the intake back on but other then that guess it time to check the injectors again to make sure they are doing what they are told

You don't want non-foulers on the upstream 02's,pull them out of the mix and see what happens.You can buy mini-cat non foulers to run under the rear 02's

 

[hunterdan]

Yes, definitely don't want non-foulers on the upstream o2's. The whole point is to sample as much of the exhaust as possible to get an solid reading. When they're spaced out, they can't read the exhaust properly and might be why it can't compensate.
Pull the non-foulers. Disconnect the battery for several hours and let things set, rest and reset, preferably overnight. Then start it up the next morning and see what it does.

 

[erick_2018ram]

Codes out Rich if pull them out on the upstreams. Does it within minutes.

And I dont run the mini cats they have never worked on my downstreams my truck hates them even when I was running small xforce cats , they really dont work with long tubes and no cats I keep getting efficiency codes with the mini cats , the longer non foulers is the only thing I could get to work on my downstreams

And i pulled the vvt oil pressure solenoid and cleaned and changed injectors again and now the truck will run and dive with no surge but now im running lean on bank 1 with multiple cylinder misfire. So im going to pull all the plugs again and replace from running rich and play with the o2 and see what happens

Yes, definitely don't want non-foulers on the upstream o2's. The whole point is to sample as much of the exhaust as possible to get an solid reading. When they're spaced out, they can't read the exhaust properly and might be why it can't compensate.
Pull the non-foulers. Disconnect the battery for several hours and let things set, rest and reset, preferably overnight. Then start it up the next morning and see what it does.

 

[hunterdan]

Codes out Rich if pull them out on the upstreams. Does it within minutes.

And I dont run the mini cats they have never worked on my downstreams my truck hates them even when I was running small xforce cats , they really dont work with long tubes and no cats I keep getting efficiency codes with the mini cats , the longer non foulers is the only thing I could get to work on my downstreams

And i pulled the vvt oil pressure solenoid and cleaned and changed injectors again and now the truck will run and dive with no surge but now im running lean on bank 1 with multiple cylinder misfire. So im going to pull all the plugs again and replace from running rich and play with the o2 and see what happens

You still don't want the anti-foulers on the upstreams. You're not going to get a true sample of the engine is doing with them on. You're saying it's running extremely rich, then it's saying it's running lean on bank 1. Yeah, it's running rich because it's sensing a lean condition and adding fuel to compensate. Pull the front spacers and throw them in the trash, seriously, you're only hurting your troubleshooting at this point. Then, disconnect the battery for an hour, hold the brake pedal down with the battery disconnected for a few seconds. LTFT and STFT should reset to zero.
You're also likely getting misfires for being way too rich. Truck is thinking it's so lean, it's dumping so much fuel it can't light it off.

 

[hunterdan]

My intake manifold pressure at idle is 9.74 inHG

My map vacuum is at 20.118 on live data and. Manual gauge

And my throttle position looks almost identical to your on start up goes to 15 then trims back from 8-10 at idle before it starts to surge

But my long term fuel trims indicate i cant get to read other then -
1/1 reads 23.631%
2/1 read 12706 %

My short term is
1/1 -33%
2/1 -33%

My 02 sensors reads like that my
1/1 reads hit or miss like that or try to stay negative now and ive changed it 2times now but

2/1 reads ok to me


but I have to use spark plug non foulers to space them out some since I run no catalytic converters of i dont I will code out to rich with the long tubes

Looking back at this data, the sensors are telling the computer it's running way lean, so it's adding a boat load of fuel, that's why the LTFT are so high. The STFT will bounce back and forth. I bet if you watch them enough they'll bounce back over to the high positive side quite a bit. Otherwise, the LTFT will start to back down.
Those anti-foulers are 110% contributing to the lean faults and the excess fuel being loaded into the cylinders. Read up on how they work. Seriously, pull them, throw them out, reset the PCM and start over. Bad data is going to give bad information. And that's exactly what's happening with those installed.

 

[Wild one]

Codes out Rich if pull them out on the upstreams. Does it within minutes.

And I dont run the mini cats they have never worked on my downstreams my truck hates them even when I was running small xforce cats , they really dont work with long tubes and no cats I keep getting efficiency codes with the mini cats , the longer non foulers is the only thing I could get to work on my downstreams

And i pulled the vvt oil pressure solenoid and cleaned and changed injectors again and now the truck will run and dive with no surge but now im running lean on bank 1 with multiple cylinder misfire. So im going to pull all the plugs again and replace from running rich and play with the o2 and see what happens

That's cause you've got anti-foulers under the upstream/front 02's.As we've been telling you, pull the spacers out of the front 02's and put the front 02's back in their original position,and as Hunterdan says do a battery reset and see what happens.

 

[erick_2018ram]

Looking back at this data, the sensors are telling the computer it's running way lean, so it's adding a boat load of fuel, that's why the LTFT are so high. The STFT will bounce back and forth. I bet if you watch them enough they'll bounce back over to the high positive side quite a bit. Otherwise, the LTFT will start to back down.
Those anti-foulers are 110% contributing to the lean faults and the excess fuel being loaded into the cylinders. Read up on how they work. Seriously, pull them, throw them out, reset the PCM and start over. Bad data is going to give bad information. And that's exactly what's happening with those installed.

They data now is definitely different

All this is with the foulers removed

1/1 - range cuts in and out ever now and again fluctuations tighter then flat lines then come back (2nd new senor too)
2/1 fluctuations great band width from .1 to .8

1/1 short term -3.7%
2/1 short term 0.189%

1/1 long term 1.9%
2/1 long term -31 % but good o2 upstream data

And only codes are lean on bank 1 not 2

It's only pulling fuel on bank 2. But 1 is what's coding it would make sence if its on the same bank to me

 

[Wild one]

They data now is definitely different

All this is with the foulers removed

1/1 - range cuts in and out ever now and again fluctuations tighter then flat lines then come back (2nd new senor too)
2/1 fluctuations great band width from .1 to .8

1/1 short term -3.7%
2/1 short term 0.189%

1/1 long term 1.9%
2/1 long term -31 % but good o2 upstream data

And only codes are lean on bank 1 not 2

It's only pulling fuel on bank 2. But 1 is what's coding it would make sence if its on the same bank to me

Hopefully you left the anti-foulers under the rear 02's ???

 

[hunterdan]

Those numbers are starting to pull closer to where they should be. Have you disconnected the battery for an extended period of time? If the sensor isn't oscillating between 0.1 and 0.7 volts fairly consistently at idle, then I suspect there's an issue with the sensor and could be contributing to some issues on that bank. Try pulling that sensor and cleaning it, it's probably full of carbon build up.
Disconnect the battery while removing the sensor so you give the computer time to reset.

 

[alex6666]

My apologies for what may be (probably is) an uninformed suggestion. OP says it started after being parked for two days......any chance you got a bad battery that is screwing with the electronics?

 

[Wild one]

If you still have the mini cat anti-foulers,stick them back under the rear 02's while you have the sensors out

 

[hunterdan]

@erick_2018ram any updates?