Downshift Jerk from 2nd to 1st
#12
Have you checked your rear driveshaft for any play? I had what I thought was the "California stop" issue that so many early L3s had. Well documented. So I figured that was my issue and that I would eventually update the software. But I also found my center bearing support was in rough shape. Since installing the new shaft my issues seems to have disappeared. Its as if there was enough slop in the the shaft that it created a bit of driveline slack. Who knows, I may still need the software updates but one thing is for sure, the shifting issue is a lot less noticeable if at all.
#13
I second (or third, or fourth) the software update. It can be done with the GAP Tool. They will charge you $25 to track down the “correct” update for your vehicle. I had the California stop issue with mine. I thought it hard to believe a 12 year old vehicle at the time wouldn’t be up to date, but it wasn’t.
#14
I second (or third, or fourth) the software update. It can be done with the GAP Tool. They will charge you $25 to track down the “correct” update for your vehicle. I had the California stop issue with mine. I thought it hard to believe a 12 year old vehicle at the time wouldn’t be up to date, but it wasn’t.
#15
You probably looked it up by now, but a California stop is when someone comes up to where they should stop but instead comes to a slow crawl then accelerates - without actually stopping. So with the LR3 the programing is trying to downshift just as power is suddenly being applied or an upshift is commanded causing a weird hesitation then slam into a gear issue. If one comes to a proper stop its not really an issue.
#16
You probably looked it up by now, but a California stop is when someone comes up to where they should stop but instead comes to a slow crawl then accelerates - without actually stopping. So with the LR3 the programing is trying to downshift just as power is suddenly being applied or an upshift is commanded causing a weird hesitation then slam into a gear issue. If one comes to a proper stop its not really an issue.
#17
Well if tis getting worse then its probably a combination of older fluid and software being needing an update. When was the fluid changed, if ever? I dont have a GAP tool, but I wonder if you can at least see what version of software you have. I wish there was some sorta master list available of software versions but someone might be able to know if yours has bee updated or not.
#18
Well if tis getting worse then its probably a combination of older fluid and software being needing an update. When was the fluid changed, if ever? I dont have a GAP tool, but I wonder if you can at least see what version of software you have. I wish there was some sorta master list available of software versions but someone might be able to know if yours has bee updated or not.
Last edited by loanrangie; 12-15-2019 at 02:32 AM.
#19
#20
You can continue to look for other causes, but I wouldn’t spend any more money on anything until you reset the service interval and update the trans control programming.