Holding RPM's - Dodge Diesel

RamYouOver2500 · 09-21-2008, 04:58 PM

Why does my truck hold the rmps when i rev my truck? I have an 07 5.9L with the 48RE thanks.

matego · 09-21-2008, 05:19 PM

Are you talking about high RPM's? If you rev it to 3500 it will stay there a few seconds. It has been explained as the pressure built up in the rail causing the RPM's to hang. I can tell its a lot worse with aggressive fueling.

82NDSNPR · 09-21-2008, 05:32 PM

mine does the same thing and i have herd the same something to do with the rail and sticks.

Snapoff · 09-22-2008, 03:55 AM

Some highly modified trucks hang like that....It sound to me like you have a bad injector.

OutOfSight · 09-22-2008, 11:04 AM

When my truck was stock it would do that. Still does it i belive.

ZacHolley · 09-22-2008, 11:15 AM

mine did it with bad injectors but now that i got brand new injectors it only does it when I have the diablo predator on there

bighornram · 09-22-2008, 06:11 PM

Mine does it also - gets worse with increased fueling. Will teach someone whos not used to a diesel not to goose it hard like in a parking lot like you can with a gasser. Turbo lights and fuel pressure hangs high for a second - their standing on the brakes and shes still lunging forward... lil bit o pucker. Nature of the beast!

jiggerman78 · 09-22-2008, 06:33 PM

Quote:

Originally Posted by bighornram

Mine does it also - gets worse with increased fueling. Will teach someone whos not used to a diesel not to goose it hard like in a parking lot like you can with a gasser. Turbo lights and fuel pressure hangs high for a second - their standing on the brakes and shes still lunging forward... lil bit o pucker. Nature of the beast!

Thats exactly how i feel but when the turbo boosts its like no other feeling... I also hit 43lbs the other day with BDTD on performance. In addition to that i dont remember seeing gas going to 40 lbs of boost at WOT except for Supra's with spray, people describe my truck as a jet because of turbo whine.

RamYouOver2500 · 09-28-2008, 07:03 PM

Well my buddy has the same year truck, straight pipe, superchip on tow and airraid intake with the 6spd and his doesnt hold RPMs. I was wondering more if it was a tranny thing because i have an auto. I took my muffler off a few weeks ago and it didnt hold as long as normal. I might be doing a muffler delete here soon, it sounded sooooo good.

09-21-2008, 05:19 PM	#2
matego madhat's monkey boy... Join Date: Oct 2006 Location: Harrisburg PA Posts: 1,795 My Photo Gallery My Classified Ads	Are you talking about high RPM's? If you rev it to 3500 it will stay there a few seconds. It has been explained as the pressure built up in the rail causing the RPM's to hang. I can tell its a lot worse with aggressive fueling. __________________ 2005 QC 4x4 3.73 NV5600 Smarty Handshakin' in the 12's Racing Video Racing Video 2 12.992@106.6 1.89 60' 3-30-08 616HP/1200+TQ 10-18-08 Stock Injectors/Stock CP3

09-21-2008, 05:32 PM	#3
82NDSNPR Registered User Join Date: Jul 2007 Location: manteca ca Posts: 803 My Photo Gallery My Classified Ads	mine does the same thing and i have herd the same something to do with the rail and sticks. __________________ 2006 Megacab To much edit that cost way to much money if its out there prob been on the truck at one point... Harry and the boys at Peak Diesel working on a crazy set of twins all designed and thought up by soulezoo aka the DR. Evil of turbos

09-22-2008, 03:55 AM	#4
Snapoff Registered User Join Date: Feb 2008 Location: Vancouver Island BC Posts: 397 My Photo Gallery My Classified Ads	Some highly modified trucks hang like that....It sound to me like you have a bad injector. __________________ 07 Quad cab, Smarty TNT(R), MP8, Flux 6.2s+3.3s, NX-II Progressive Floor-it stage 3 CP3s, Helix 2 w/springs, Fass, MBRP, Ultimate w/Fat shafts BD R-850s

09-22-2008, 11:04 AM	#5
OutOfSight Registered User Join Date: Aug 2007 Location: Fort Lupton Colorado Posts: 440 My Photo Gallery My Classified Ads	When my truck was stock it would do that. Still does it i belive. __________________ 06 CTD RCLB ATS aurora 5K ATS Twin CP3's ATS stage VI trans/co-pilot Aeromotive Lift Pump EDE External Wastegate Haisley studs Flux 3.5's Gregg Houge Valve Springs/Rocker Studs Auto Meter Gauges BDTD CL/EZ stack NOS Nitrous

09-22-2008, 11:15 AM	#6
ZacHolley Registered User Join Date: Apr 2004 Location: OKC, OK Posts: 188 My Photo Gallery My Classified Ads	mine did it with bad injectors but now that i got brand new injectors it only does it when I have the diablo predator on there __________________ 2005 SW SB, black, quad cab, Diablo Predator , removed silencer ring, xd hoss 22in chrome wheels

09-22-2008, 06:11 PM	#7
bighornram Registered User Join Date: Sep 2006 Location: Delta, PA Posts: 687 My Photo Gallery My Classified Ads	Mine does it also - gets worse with increased fueling. Will teach someone whos not used to a diesel not to goose it hard like in a parking lot like you can with a gasser. Turbo lights and fuel pressure hangs high for a second - their standing on the brakes and shes still lunging forward... lil bit o pucker. Nature of the beast! __________________ "The diesels worth the price of gold; it's the cheapest grain he's ever sold..." -Jason Aldean (edited for madhat) :) ___ 06 2500 Quad LB 4x4 SLT "Big Horn", Inferno Red, 48re-stock, 3.73, 3" Skyjacker lift, dual stabilizer, 325/70R17 Nitto Terra Grapplers, Rhino liner, Lund Visor, Mopar step rails, BW Pocket Flares, ventvisors, strobe lights - - - NO RECIRC DOOR! Edge Juice/Attitude, AEM Brute Force intake, silencer ring gone, 5" Magnaflow turbo-back with 6" tip

09-28-2008, 07:03 PM	#9
RamYouOver2500 Registered User Join Date: Oct 2007 Posts: 70 My Photo Gallery My Classified Ads	Well my buddy has the same year truck, straight pipe, superchip on tow and airraid intake with the 6spd and his doesnt hold RPMs. I was wondering more if it was a tranny thing because i have an auto. I took my muffler off a few weeks ago and it didnt hold as long as normal. I might be doing a muffler delete here soon, it sounded sooooo good.

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