When my TC locks up in OD or when it locks up when the OD is locked out, sometimes it will "buck" or "pop" very loudly. it happens almost all the time when i'm going up a hill under light to medium throttle, but never under heavy throttle. it will even happen if i let off the throttle suddenly. any ideas? thanks in advance guys and gals!

 

had same problem, Look up thread for TC cycling. I wrapped the black wire with tan strip by the alternator/pass. battery with aluminum foil and my problem went away. There are many other ideas in those threads. Hope it works out for you.

 

Its how the factory computer works.

this will let you program how you want it to work.

http://www.stecherperformance.com/SP...t_Electro.html

 

sorry guys, what i MEANT to say was, the TURBO "bucks" or "pops" very loudly! thanks for the info though guys, i really appreciate it!

 

this happens because the rpms drop quickly and the turbo is still producing boost when the engine slows suddenly it cant swallow the air the turbo is pushing and the air if forced back to the turbo and it jerks the turbo wheel forcing it to momentarily spin in the wrong direction. try to avoid doing this either lift before it shifts or put a dump valve on it. eventualy barking the turbo will break the shaft or explode the wheel.

 

is a dump valve the same as a blow off valve? where could i get one?

 

yes bd makes one

 

thanks for the help guys! i'll look into it

 

Sorry, but you don't need a blow off valve. It shouldn't be doin that with an auto. My guess is it's because ur runnin the 36-43#'s of boost that's listed in ur sig. and I'm guessin that's on a stock turbo. Turn ur boost down a little. The reason it doesn't do it under full throttle is because it's under boost all the time, at part throttle it drops boost in between shifts and barks the turbo.

 

Dump valves are not blow off valves.

Dump valves are preset to specific PSI settings to cause them to open. Blow off valves operate on vacuum. Blow off valves are ONLY for cars that run on a vacuum system with a throttle plate.

Both will help reduce the compressor stacking.. but all it does is usually will just wear out the thrust bearings faster... HARDLY an issue on these trucks as there is no throttle plate. Its very common on gas engines due to the throttle plate snapping closed and the air has no where to go. Mostly used for performance to keep the turbo spooled as much as possible between shifts.

These diesels still suck in the air and the turbo still spins freely when the gas is abruptly lifted...

An issue.. yes... slightly. Big enough to worry about/throw money at? No.

 

http://www.bd-power.com/ram/product....boGuard&tt=ram...................

 

i'll have to figure out how to turn down the boost for now then, because this is how the truck was when i bought it. maybe i'll just turn the chip down... that should do it. thanks guys for all of the help!