Ok, i had a code PO153 a few days ago..replaced the hego and the light came on the nex't day.

Replaced the hego with another one and a few hours later, i get the same code.

In between the two hego changes, i got a code for the rear sensor on bank 2 also which never came back after erasing it.

Then earlier today i got a code for performance/ Map sensor,which i erased,and i currently have three codes.
1 PO1504...idle speed control auxilary inputs
2 PO133 bank 1 sensor 1
2 PO153 bank 1 sensor 1

I have to think that there is one problem causing all of this.
Any ideas from the OBD2 gurus?

 

When i got the Map sensor code, the truck ran extremely rough when in the throttle.
It did this up until erasing the code and swaping back a different front hego on bank two.

In between all of this when either front bank hego ses is on, the truck runs slightly rough at lower rpm.

Ground problem?
Vacuum leak?....haven't found one.
Dirty MAP sensor?