Im running into this problem even now in 2020. anyway those pictures still exist?
I have this same problem. Only way around it that I’ve done was disconnected my battery and reconnect it and it would last about a week and then start doing the bucking phase againThanks for the input Burvis.
Let me try to clear up what is going on.
When driving, and only when driving. Each time you change gears and the RPM's drop to below 2500, as you try to come back up the truck will "bog down or lug" Not so much as to stop you, just enough to make the engine vibrate and shake.
I picked this thread because after an exhaustive search of this site this is the thread that most closely resembled my particular problem.
I understand that this was a TBI engine and mine us multi-port and a few years newer.
The fact that the problem sound so similar gives me hope.
It is almost impossible to tell any difference in the engine while it is in the shop and just sitting in nuetral even though I rev it up to the 2500 mark. It only seems to happen if the truck is under a load. I live in a very mountainous area so the loads are worse going uphill, which we seem to do alot LOL.
MY fuel economy has fallen off and of course the performance stinks. This problem is driving me nuts!! :wtf:
I know you guys have the answer I need.