Shudder/RPM drop when coming to a stop

[Xpmr5]

I have a 2009 4 cylinder auto ranger that is dropping in rpms when coming to a complete stop after the truck reaches operating temp (doesn't do it when cold). I just changed the valve body gasket which fixed the hard shifting issue 100%. I'm almost positive this issue I'm having was present before the valve body repair, but I could be mistaken. I can tell the torque converter isn't disengaging, because when I put it in neutral befoee coming to a stop, there is no shudder present.

So far, I have replaced the TCC solenoid and tried the shudder fix additive and there hasn't been any improvement. I must add that I did use new Mercon fluid instead of Mercon V fluid by accident when I refilled. I don't see that causing this issue, but worth noting...

The truck has 100k on it.

Sent from my SM-G900V using Tapatalk

 

[rangerpilot]

Doesn't sound exactly the same but do a check of your fuel pressure. Had a similar issue a few months back and the fuel pump/regulator assembly was bad. I was able to prevent my "shutter" /RPM drop by keeping a little throttle in as in approach a stop (manual shift in neutral).

Either way. A quick check via AutoZone fuel pressure gauge rental wouldn't hurt.


Sent from my iPhone using Tapatalk

 

[Xpmr5]

Ttt

Sent from my SM-G900V using Tapatalk