Weird issue after dead battery
Weird issue after dead battery A little background;
Ok so I've been running my current tune for at least a good month or two with no real problems, except for cold mornings it would shift a little too hard.
I haven't drove the truck for a while and this weekend my battery was completly dead. I'm sure it sat that way for at least a day or two. I had the charger on it for a few hours to bring it back to life.
Fast forward to yesterday;
Started it up to take it for a cruise, and its now shifting really sluggish. It also wants to die when parking and coming to a stop.
Its like it lost the tune, nothing seems the same on how it drives. Did the dead battery cause the PCM to have to relearn itself again or what?
Ok so I've been running my current tune for at least a good month or two with no real problems, except for cold mornings it would shift a little too hard.
I haven't drove the truck for a while and this weekend my battery was completly dead. I'm sure it sat that way for at least a day or two. I had the charger on it for a few hours to bring it back to life.
Fast forward to yesterday;
Started it up to take it for a cruise, and its now shifting really sluggish. It also wants to die when parking and coming to a stop.
Its like it lost the tune, nothing seems the same on how it drives. Did the dead battery cause the PCM to have to relearn itself again or what?
Originally Posted by Zick
Its like it lost the tune, nothing seems the same on how it drives. Did the dead battery cause the PCM to have to relearn itself again or what?
Originally Posted by white2001s10
Yes the learned values for fuel trims, idle, and transmission operation get cleared and have to be relearned.
But whats this about trans operation?
Check the terminals on your battery, make sure the connections are on there real tight. I had a similar problem, I thought I lost my tune when my car would want to stall or didn't want to crank over. It ended up being loose connections to the terminals.
Originally Posted by Zick
Opps I guess I should mentioned more about my tune. Currently I am running Open Loop only. I have both LT & ST fuel trims disabled, so in theory that should not be my problem.
But whats this about trans operation?
But whats this about trans operation?
They will work in open-loop.
