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05-29-2010, 05:43 PM
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#1
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Name: Shambo
Title: Diesel Idiot
Status: Not Here
Join Date: Dec 2006
Location: Deltona, FL
Member`s Gallery
Posts: 1,413
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48RE won't shift untill 3000 rpms
My truck started not shifting to 2nd or 3rd untill the RPM's reach around 3000 rpm's??? fluids are good! anyone have any idea's
__________________
RIP 2003 3500 CR
1997 12V 2500 14.207 1/4 ET @94 MPH.
THANKS DIESEL SPECIALISTS, AIRAID, FTI, PUREFLOW TECH, and COR FAB
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05-29-2010, 07:41 PM
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#2
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Name: Bponci
Title: rookie
Status: Not Here
Join Date: Sep 2006
Location: fortuna
Member`s Gallery
Posts: 2,160
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Scan and check gov pressure. Check line pressure. If its high you might have a malfuntion of the tv motor. The gears are plastic and i have seen a few issues like that.
__________________
2002 dodge 2500 auto (tow rig)
S10 with a little turbocharged/procharged 12 valve 9.22@157mph
23t altered 12v compounded fuel only 8.30s@166mph
Daughter with a badass 1st gen 12mm VE 11.64@117mph
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05-29-2010, 08:22 PM
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#3
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Name: Shambo
Title: Diesel Idiot
Status: Not Here
Join Date: Dec 2006
Location: Deltona, FL
Member`s Gallery
Posts: 1,413
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interesting thanks
__________________
RIP 2003 3500 CR
1997 12V 2500 14.207 1/4 ET @94 MPH.
THANKS DIESEL SPECIALISTS, AIRAID, FTI, PUREFLOW TECH, and COR FAB
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05-30-2010, 09:06 AM
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#4
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Name: zuki_dan
Title: Green Behind the Ears
Status: Not Here
Join Date: Feb 2009
Location: NC
Member`s Gallery
Posts: 46
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I have seen the 2 sensors on the valve body cause that problem also. R&R and it should fix the shifting problem.
__________________
'06 2500 MC;TRE Trans, Twins Turbos, Dual Fuelers, ARP's, O-Ringed, Fluxes, Springs, Helix, Bladerunner, Fass, Stacks, Smarty, TST, Dr. P, Snow, Optix Gauges, Bypass, 35 XAT's, Lorenz leveled.
1/4mile 12.13 @ 118.4mph 2-21-09
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05-31-2010, 08:51 PM
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#5
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Name: revolutiondsl
Title: Cat buys my Cummins parts
Status: Not Here
Join Date: Jun 2007
Location: Lafayette, IN
Member`s Gallery
Posts: 1,391
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I had the same issue and it turned out being the VB i guess the aluminum will wear out and let pressure go by the spool valve. It isnt noticed on a stock VB but when the pressure is turned up it will. Does it shift normal into O/D or Lockup?
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03 3500 QC SB 4x4 Auto, 2.5 puller
07 Mega Cab dually4x4,Auto, 5.9 ,
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06-01-2010, 04:29 PM
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#6
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Name: davem3261
Title: Too Much Time
Status: Not Here
Join Date: Oct 2009
Member`s Gallery
Posts: 258
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First check your tv cable to see if it is hanging up(assuming it is the 03 in your sig). Have someone floor it while you are underneath and see if the tv cable returns all the way. next step if would be to put it on a scanner to check out the gov solenoid. Your govenor solenoid pressure should gradually increase with speed to about 130 psi when it shifts to fourth. If it is not a smooth increase, hangs at a low pressure, or jumps around alot, you have a bad solenoid. I am on my 3rd one, they are crap no matter where you buy them.
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05 2500HD 6.0 Texas speed Cam and heads, S475 3000 stall.
Ex money pit truck '04.5 2500 SLT QC SB 4x4
4.10's , HE351/S475 twins, BMS 100hp, FASS, ATS dual cp3, Fat Shaft Billet Trans, 5" aluminum driveshaft SOLD!
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