Accelerator disengages while driving , then let off accelerator and then push petal again pick up?

 

Sounds like you APS (accelerator position sensor) is bad. You need the whole pedal assembly.

 

Thanks is there any checks I can perform to make sure before I purchase the petal assembly

 

There is, just forgot how many ohms shoul be. Maybe some one can chime in.

 

Is the sensor not available separately?

 

Depends on the year, iirc 01-03 has the built in APS and IVS. Early had them exposed just like the obs trucks.

 

A lot of guys have been able to get some more service out of an old one by spraying the crud out of it with contact cleaner. I have not had to do this but I think it is as simple as removing it, then opening it and cleaning it.

 

You are correct sir!

 

when mine did that is was a defective pedal assembly.
i changed it, then had a recall notice from ford . so i put the bad one back in the truck and took it in for the recall. i now have a good one in the truck, and a new one on the shelf as a spare.

 

It looks like Rock A has the APS available separately at least for years 1999 - 2004 trucks with the 7.3 engine.
Prices vary depending on the year of the truck, but it will cost around $200 - 500 more to buy the comlpete pedal assembly (the sensor is only $40 - 70).

It's good to know cleaning of APS is possible - still keeping an eye or ear on mine and waiting for the next cold start at 20F or colder.

We did not have below 30F weather this winter

 

Spray cleaning has not worked for me either of the two times I've replaced my units. For additional context, I have the composite assembly.