code 78

[hereismylife]

Ok some reason no matter how I search this the search feature dont want to show me what I am searching...

1. I want to test the vac pump. Vac should be what at pump? and what at waste gate?

2. How do I test the waste gate solenoid?

Thanks

 

[ak diesel driver]

vac should be 20-22 at pump and the same at wastegate at idle

 

[ak diesel driver]

if you have a mighty vac pull suction on the wastegate and see if it will hold it without bleeding off or if vac is up to par you should not be able to move it while idling

 

[hereismylife]

Ok checked the volts..good
Checked the vac at pump....good
Checked the selonoid...not good

Replaced and now holds at idle...and no code yet...

thanks for the quick help

 

[ak diesel driver]

your welcome