OK HELP!
1. About march 1, my check engine light came on- took it to oreileys for a scan and said Speed Sensor A (cannot remember code), I was not overly concerned to fix it very very busy.
*Drove about 800 miles no further issues except the annoying CE light*
2. ABS comes on a few days ago
3. Today the truck, 4 miles from home decides it wont let RPM's get above 2500, and 40mph. It slightly hard shifted once.
Truck has 97000 miles and is a 1999 V10 has NEVER had any tranny shifting issues or engine issues....
4. Check tranny fluid when we get home it does not smell burnt and is red- its not even that warm...
I have read a couple places that a VSS can cause this? But I never noticed my speedometer acting up EXCEPT for the day the CE light came on- which there was a lot of ice and tires were spinning and speedometer said 0.
Please help im PRAYING the tranny is not out i LOVE this truck and it hauls like a dream

 

Whatever codes are present and can be retrieved and shared here is your best bet to get the help you need.

 

Sounds like the sensor on the rear diff.

 

Not very likely. That will only cause an ABS light, not the other symptoms.

We need actual data in order to form any hypothesis, otherwise you're just guessing.

 

I have to agree, get the codes read again, and report back here.

I suspect, however, it's the output shaft speed sensor on the tranny.

But get the codes read before you go changing parts