Been a while since I've been on mud, because the FJ project is almost complete. Got everything together and it runs, drives and stops like a champ, except for one problem, it's not shifting properly.
I have a 2007 5.3 vortec and matching 4L60E, mileage is about 18k. When driving we seem to get no overdrive at all and only the occasional shift or no shift at all. Not sure if it's going into limp mode or what.
Tried changing out the VSS and that didn't make a difference. Scanner revealed that when driving we get the same signal as if at idle. We had the tach and gauges installed by someone else and we have an adapter on the tach, for what I don't know. I'm thinking the issue is that adapter, but I don't have a part number to track it down and see what it actually does for us. I've read that sometimes they are needed and sometimes not needed.
Any of you guys have an idea what else could be my issue?
I'm going to cross post this in the 60 and 80 section as well.
I have a 2007 5.3 vortec and matching 4L60E, mileage is about 18k. When driving we seem to get no overdrive at all and only the occasional shift or no shift at all. Not sure if it's going into limp mode or what.
Tried changing out the VSS and that didn't make a difference. Scanner revealed that when driving we get the same signal as if at idle. We had the tach and gauges installed by someone else and we have an adapter on the tach, for what I don't know. I'm thinking the issue is that adapter, but I don't have a part number to track it down and see what it actually does for us. I've read that sometimes they are needed and sometimes not needed.
Any of you guys have an idea what else could be my issue?
I'm going to cross post this in the 60 and 80 section as well.