Ford guy stuck w/ chebby
Join Date: May 2006
n8rsk8r is offline
Re: 4l60e Problems and Solutions
transmissions are a beast.
You have to first get codes.
If no codes, check the wiring there will be some issues.
Once you get codes you can diagnose
If you don't get codes it is more than likely a computer issue. The computer issue is damn near always overlooked. Why is this?
I have been experiencing some gnarly shit on my trans, stuff that is not covered anywhere on any known troubleshooting guides or written about.
You have to basically immerse yourself into the transmission and its functions and how it relates to all other functions of the vehicle. Run down each one, trouble shoot each one so you can get it figured out so you can eliminate what the bad from good.
Then you can come back to the transmission. But not until then.
Transmissions are complicated, and that is why transmission shops are chalk full of business all the time..
with my last build, it, the build, went great aside from a sales guy who didn't know what the **** he was talking about and sold me the wrong converter.. and it overheated (went to shit) and that was what initially tore the trans up. The rest, an electrical issue on my truck tore the build up even further.. and I try to keep up on things, and try to make sure it is all good throughout.. it is in my best interest to keep it going correctly.
that said.. our transmissions are electrically controlled meaning that in the valvebody (trans brain) it depends on these sensors to do what it is the trans calls on them to do.
The valve body is metal on metal, bores and valves. In some instances the bores are worn, and you have to change to a valve with rubber or other (teflon and other) seals that help to keep the pressure where it needs to go.
These wear out.. you are looking at trouble. then it gets into the case (steels and clutches and the apply pistons).. they are pretty easy when it comes down to it, just making sure the tolerances are correct and you have it made.
1999 2WD Automatic S10 standard cab.
I have nearly rebuilt this damn truck 100%!!