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2006 Turbo ???????

1383 Views 5 Replies 2 Participants Last post by  TXAustin, 
P
hey guys needs some help. when im in 4th gear and roll on the throttle making my way to full throttle(to prevent downshifting) my turbo sounds like it all of a sudden takes off and spools like crazy around 80 mph once she really gets going. it will also does the same in 3rd with tow/haul on under the same type of acceleration. does anyone know what this might be? thanks again
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TXAustin
ponte5.9CD said:
hey guys needs some help. when im in 5th gear and roll on the throttle making my way to full throttle(to prevent downshifting) my turbo sounds like it all of a sudden takes off and spools like crazy around 80 mph once she really gets going. it will also does the same in 4th with tow/haul on under the same type of acceleration. does anyone know what this might be? thanks again
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First off, you have a 48RE. The 4 stands for 4speed, not 5. Tow/haul is 3rd gear.

From what you described I don't know what the problem is. Your turbo spools up and you go faster...:confused013:
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P
my mistake no no real increase in speed and it seems like it happens all of a sudden. it doesnt sound right.
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TXAustin
The turbo will start to spool up then REALLY spool up fast. That part is normal. On a VGT turbo it constantly spools up and does not have this effect as bad.

Just wait till you drive in a truck with a larger/laggy turbo. Once that sucker lights it is insane! Basically times what you are feeling by 10.
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P
sorry im new but whats a vgt turbo. thanks for the quick response
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TXAustin
VGT(Variable geometry turbo) is on the 6.7l Cummins only, no 5.9 has it stock and are really not much more efficent IMO. It does have a huge decrease in lag though.
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