Ok I'm getting ready to inspect the tone ring in the rear diff that the vss reads off of. What do I need to look for I just replaced the CSS with abrand new ford one. And had issues again yesterday with the shifting it pulled the vss error code again wiring is fine to vss.

I decided to upgrade diff cover while I'm at it

Help on this would be appreciated

 

Check for any chipped teeth in the tone ring. Also make sure its clean. You'll see it and understand when you get in there. As far as a diff cover, I bought one from riffraff, spendy. There are a LOT of aftermarket covers, pick what you like and buy it. If you happen to buy one that has an oring seal, don't just trust the oring to seal. Ask me how I know...

 

I got the 08 cover with gasket and as bolts for 80 buck all the rest were 200 and up

 

Is it an OEM gasket? If so is it reusable?

 

It is a silicon gasket idk if its reusable but I'm still gonna use rtv I don't know if I wanna trust it

 

So could just bad diff fluid cause a vss reading error just everyonce in awhile its only done it twice and it stops when I shut off the truck and restart it. I'm really hoping its just fluid cause if tone ring needs replaced that just sounds expensive

 

Sounds more electrical to me.

 

If the fluid had big ol chunks in it that could....but you gotbigger problems at that point. I think I'm w darrin.recheck that wiring.