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Turbo surge & VGT solenoid.....
I recently installed an '03 turbo on my truck, it came with 2 vgt solenoids....the original 03 solenoid and a brand new solenoid. I figured I'd try the solenoid that was already in the turbo when it showed up, that was the original 03 solenoid. The turbo was surging when the truck was cold with that solenoid. The seller told me it was bad and included a new solenoid so no biggie. Well, I installed the brand new solenoid and.....same thing.
I figured I'd try my solenoid that was in my '05 turbo I removed before I took the turbo off again to clean it. Guess what? No surge! Smooth as ever.
What the heck? Why would I get turbo surge with a brand new OEM solenoid and no surge with my '05 solenoid with 60k on it?
2005 F250 4x4 King Ranch 6.0
Two tone removed, Quad Captains, High idle mod
Edge Insight CS w/ EGT, fuel PSI, and turbo timer
4" turbo back straight pipe, Dieselsite coolant filter
BPD FICM, '03 turbo, IPR gen2 delete, Zerex ELC
Goodyear Duratracs, Tuned by Matt@Gearhead