Two weeks ago I threw this:
1693(companion code) 1021(apps voltage does not agree with map).
I did a search and found that often when a VP dies it throws a 1021. Took it to local diesel shop and we found that fuel pressure was 1-2psi and vacuum under acceleration
{).
My 01 then received $2670. worth of VP injection pump and intank lift pump. It runs better and sounds better BUT TODAY check engine light came on.
Now I have a 1693(companion code) 1022(apps signal voltage
too low)
Is it possible to have a bad VP and a bad APPS.
Feedback Please!!
I NEED THE TRUCK FIXED RIGHT. I am at my wits end.
Dave
1693(companion code) 1021(apps voltage does not agree with map).
I did a search and found that often when a VP dies it throws a 1021. Took it to local diesel shop and we found that fuel pressure was 1-2psi and vacuum under acceleration

My 01 then received $2670. worth of VP injection pump and intank lift pump. It runs better and sounds better BUT TODAY check engine light came on.
Now I have a 1693(companion code) 1022(apps signal voltage
too low)
Is it possible to have a bad VP and a bad APPS.
Feedback Please!!
I NEED THE TRUCK FIXED RIGHT. I am at my wits end.
Dave