Overdrive shudder
Thread Starter
Senior Member
Joined: Mar 2015
Posts: 206
Likes: 7
Update: changed spark plugs (finally). While truck does run better, the hard shaft into overdrive (one might consider it a shudder) is still occurring.
Just so happened that I broke a brittle injector connector so add that to the list.
Next up is checking the springs/boots and coil packs.
Those COPS are expensive!
Note: the spark plugs were pretty gross so it was time. Cylinder 3 had a misfire logged in memory but was not consistent and didn’t throw a check engine code.
Just so happened that I broke a brittle injector connector so add that to the list.
Next up is checking the springs/boots and coil packs.
Those COPS are expensive!
Note: the spark plugs were pretty gross so it was time. Cylinder 3 had a misfire logged in memory but was not consistent and didn’t throw a check engine code.
Member
Joined: Jul 2018
Posts: 1,285
Likes: 296
From: upstate NY
For what it's worth: I had an ever-so-slight "rumble" on the 4-3 downshift, the type of thing that most people wouldn't notice (definitely not a mis-fire condition). As the transmission fluid had 141k on it at the time, the first thing I did was drop the pan, replace the filter, and re-fill. The issue went away completely. Now at 150k, I need to do another drain and fill. I like to do my transmission services at every 30k miles, I'll actually be doing several drain and fills over the course of the next year to get as much new stuff into the transmission as possible, but at that amount of mileage without a change, prefer to do it gradually.