No O/D when cold?

[JDF]

I have been noticed that when it is below 40 degrees, the tranny won't shift into overdrive until it has warmed up. It usually only takes 5 minutes or a few miles but is this normal? When I leave the office, I'm right on the highway so it is very noticeable. Any ideas folks? ------------------ 2001 F150 XLT SC SPORT 4X4 FLARESIDE * Black * 4.6 * Auto * awesome factory 10 spoke 17" wheels * "MAN"ual shift 4x4 * 3.55 Limited slip * Captains chairs W/console * Factory tube steps * Slider

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[georgekillian]

Mine is exactly the same. I believe this is done to reduce emissions until the engine is warmed up to a pre-determined temperature. I consider this "normal" and wouldn't worry about it.

[98fword]

Same condition here. Believe it's normal.

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98 F-150 XLT 4X4 ORP Super Cab Short Bed, 4.6, Auto, 4.10's, Mag-Hytec diff. cover, Magnacharger supercharger, K&N FIPK, Superchip, Gibson single cat-back, 80/100w German head lamps, 80w amber fog lamps, Warn HS9500i winch with semi hidden mount, Wrangler dual battery kit with red & yellow top Optima batteries, 285/75R16 Goodyear MT/R's, 16x8 Center Line Hell Cats (JUNK WHEELS), Rancho RSX shocks, B&M deep aluminum trans pan, Rhino bedliner. Needs one more door.
http://hometown.aol.com/ninetyeightfword

[Cougar Guy]

Can't say as though I've experienced this . . . my OD will always trun on in cases where I want it to (usually I drive with it off . . . so I have to turn it on before it will engage . . . highway, etc.).

This is all year . . . it doesn't change when it gets cold . . . today it is around
-10F

[max mitchell]

Are you guys sure it's not just the torque converter not locking up? In extreme cold (not 40;lower), mine still goes into 4th gear/overdrive, but the torque converter does not lock up until it's warm? It may feel like another gear, but it's not. If so, this is normal.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.

[2000 F150 4x4]

It's not just Ford. My father has a Saab 9-5 w/the annoying shift up light. At a steady cruise in fourth when the engine is cold, the shift light is off til the engine hits a certain temp. The Auto heat/fan kicks on at the exact same moment the upshift light comes on. I just wish I could default my O/D to off when I start the truck.

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2000 F150 XLT 4x4 Short Bed. Amazon Green, 5.4L, SuperCab, ORP, Tow Package, Sliding Rear Window, Electronic Shift, Keyless Entry, LT265-70-17 Tires, Clarion Pro Audio, Herculiner Bedliner, Air Silencer Removed.

1994 SVT Mustang Cobra. #1032 of 6009. Black coupe with black leather int., 3.73 rear, Bassani Exhaust, Aluminum D/S, Bridgestone RE-71 255-45-ZR17

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[Stephen_T]

I have the same condition. I asked my service department and was told it's the torque converter that doesn't lock-up until around 100-120 degrees or so. I think I also read a reply somewhere on this board from Factory_Tech that confirms this. I have a buddy with a '92 with the AODE that does the same thing.

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1999 F-150 XLT SC Stepside, 5.4L (replaced), 3.55 Limited Slip, Towing Package, Captain's Chairs, Bright Red
Added: K&N, B&M Deep Aluminum Tranny Pan, Westin Nerfs,
True Duals with FM 40DF's & 2.25" tail pipes,
JVC CD Player, Pioneer 6x8 3 ways, 12 disc add-on CD changer

[Dunbarton]

JDF,

Same condition here. It's programmed that way.

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Dunbarton "The Middle Aged Kid" '99 XLT SC SB 4x2 4.6 auto 3.55 ls The occasional Z-71 Eater! Wedgewood & Denim, SuperChipped, Airaid FIPK, HD electrical and cooling, power seat, Rhino Liner, Extang Classic tonneau cover, Mobil 1. Man, I got it all! (New Jersey)

[mikebourg]

I used to work on GM transmissions and it was the case that the engine required warming up before lockup would occur. I am sure that it is the same here.

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2001 F-150 Lariat SuperCrew, Dark Highland Green / Arizona Beige, Medium Parchment Leather (Captain's Chairs), 5.4L V8, 6 CD Changer, Rear Entertainment System, Rear Slider, 3.55 Limited Slip, Tow Package, Superchip, AirForce One FIPK, Bedrug, Extang Tuff Tonno III, DRLs, Bed Extender.

Next Mods - 01L Headlights and Corners, Gibson Exhaust, Headers, Hellwig Anti-Sway, Shocks, Bug Deflector, Fog Lights, White Face Gauges, & New Speakers!
Future Wish List - Magnacharger!!

[JDF]

Thanks guys.
Another mystery solved.