Tach and speedo crazy

[avc]

New truck and have some bugs
The tach is all over and pegs the boost guage and gets stuck
the speedo moves with tach
What is goin on?

 

[cloneman315]

Re: Tach and speedo crazy

is there a msd on it mounted by the main harness?

 

[avc]

Re: Tach and speedo crazy

Yes a MSD 6 AL

 

[cloneman315]

Re: Tach and speedo crazy

were is it mounted?

 

[avc]

Re: Tach and speedo crazy

driver side inner fender

 

[cloneman315]

Re: Tach and speedo crazy

unhook and try it