Last night I noticed that when I first started the truck, it would alternate back and forth between 740 and 760 RPM. I would estimate about 1.5 seconds at each speed, if I remember correctly. 740...760...740...760, etc. I have the GDE EcoTune...haven't really noticed this before. Normally, I get just a little bit of variation in the idle when my AC is running. Any ideas? Temp was around 55-60F. I was actually just repositioning the truck in my drive, not going anywhere....so, I'm not sure if it would have continued after driving for a few minutes.

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David T.
**DEAD**2005 CRD Limited 4X4 - Stone White **DEAD**
116,000 miles
RRO Rockfather Deluxe Lift (OME/KYB GR-2/RRO)
GDE Eco Tune
SAMCO Sport CAC Hoses
Hayden Fan Clutch
Updated Litens Serpentine Tensioner
European Graf Water Pump
Nitro Rear Diff Cover w/Lubelocker Gasket

Cold start with gde tune, mine always fluctuates. As soon as the engine warms up a bit, it goes away. Keith said it is normal and no worries.

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

Cool...good to know. BTW, how are you fitting 245/70/16s on your truck? What lift? My suspension is sagging pretty bad after 8 yrs. Will be lifting soon and trying to fit 245/75/16s, probably using Rocky Road's Rockfather Deluxe. I've dealt with them in the past with no prob, and I think that would be a good lift.

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David T.
**DEAD**2005 CRD Limited 4X4 - Stone White **DEAD**
116,000 miles
RRO Rockfather Deluxe Lift (OME/KYB GR-2/RRO)
GDE Eco Tune
SAMCO Sport CAC Hoses
Hayden Fan Clutch
Updated Litens Serpentine Tensioner
European Graf Water Pump
Nitro Rear Diff Cover w/Lubelocker Gasket

My crd suspension is bone stock, I did replace the front Springs with new, but didn't have rubbing issues before either. Took a pic for you, the rear has actually more clearance that front:




I'd say I have about 2 inch when wheel is straight and with new springs haven't noticed any rubbing. But I also think this rims have a bigger (positive) offset than the stock. I think that stock rims with this tire may have a slight rubbing when wheel is turned at max in the front plastic inner fender.

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

Normal with the GDE tune.

I got 245/70R16s and no issues.

Sent from my SCH-I605 using Tapatalk

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2006 Sport, GDE FT Eco Tune, Custom Trans Tune
2015 Ram 1500 Big Horn EcoDiesel, GDE Hot Tune

Cool...thanks for the info and pics. I can't wait to get this thing up off the ground a little more, with beefier tires.

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David T.
**DEAD**2005 CRD Limited 4X4 - Stone White **DEAD**
116,000 miles
RRO Rockfather Deluxe Lift (OME/KYB GR-2/RRO)
GDE Eco Tune
SAMCO Sport CAC Hoses
Hayden Fan Clutch
Updated Litens Serpentine Tensioner
European Graf Water Pump
Nitro Rear Diff Cover w/Lubelocker Gasket