dtc codes

[deezl duly]

hey folks just retreived my first code with the new motor. its 78, which thanks to this site i now know is a turbo wastegate solenoid fault. my question is, i have a t/m boost controller. what do i need to do to keep this code from repeatedly popping up?no idea where to start, thanks for any and all suggestions

 

[buddy]

either loosen the mechanical wastegate actuator (spring) so you get less boost, or make a boost fooler.

You are probably over boosting, meaning when accelerating onto the interstate, you have 11psi, but the PCM only expected 7psi for those 20 seconds.

 

[JMJNet]

x2 with Buddy. It will pop out as soon as you are close to 9 psi. In my case, it does not affect any performance.

To eliminate it, either put a boost fooler potentiometer on the MAP sensor (cheap) or get a performance reflash (expensive).

 

[buddy]

I recommend loosening the wastegate for best economy with stock program that doesnt need more than 10psi sustained boost with its fueling range, and you only want 2-3psi when flat cruising.

 

[deezl duly]

ok ill loosen the spring for now but when i change to the e-prom chip do i need the fooler you mentioned? and if so how do i make that. i dont recall reading about that.or maybe direct me to a specific article in the archives. thanks for the replies,ive been wondering how to get a baseline adjustment on that t/m spring for a while, now i know. thanks again.

 

[Turbine Doc]

no fooler required after refash/rechip