Up to now the weather has been in the 40s and 50s in the morning and everything was just fine. This morning it was in the 20's and when I got out on the hiway the trans would not shift into overdrive at 64 mph like usually does. Once warmed up it shifted. Any ideas what could cause this? Once warmed up it shifts fine no matter what.

Thanks,

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John
2 X 2006 CRD Sport
Mine Light Blue, Hers Dark Blue
GDE ECO Tune
Fumoto
Samco Hoses

That is by design. The TCM won't do it until fluid is up to temp.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

Good to know I'm glad nothing is wrong.

Thanks,,,

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John
2 X 2006 CRD Sport
Mine Light Blue, Hers Dark Blue
GDE ECO Tune
Fumoto
Samco Hoses

It also is programmed to do the same if the/when the transmission overheats

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

True... but be sure you have a clean air filter. That also will cause shifting issues.

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05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI

How could the air filter affect transmission shifting?

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Matt B.

05 Limited CRD. Bought it new. 112k on the clock now.

GDE Eco-tune, rear differential drain plug (drilled and tapped the pumpkin), transmission pan drain plug, Fumoto oil valve, fuel filler neck restriction removed, front hitch, Hayden fan clutch, Sears P1 battery since 08, Mobil 1 5w40, 5 volt glow plugs, DIY timing belt at 109k

Proir to puting in a K&N and provent my air filter would plug up within 5k and I would notice my shifting was bouncing all over. Mainly when cold and lower speeds. Now i clean the K&N every 5k when i change the oil. Never had a problem since.

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05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI