Auto trans shifting question
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Freshman User
Joined: Nov 2003
Posts: 40
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From: Haverhill, MA
Auto trans shifting question
I've noticed that the colder the temp the longer it takes to shift into OD. It actually dosen't shift until the trans temp gage begins to lift off the cold mark. By that time I'm already 2 miles down the highway. Has anybody else noticed this?
Thanks.
Thanks.
Freshman User
Joined: Aug 2003
Posts: 38
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From: CA Desert
All the time during cold weather. I try to start my truck about 8 minutes before driving it so the tranny works (and the heater too
) I have a block heater, but have never used it. Anyone have input on that?
RedCrewCab4x4
) I have a block heater, but have never used it. Anyone have input on that?RedCrewCab4x4
Posting Guru
Joined: May 2003
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From: South Dakota
Yes, in very cold weather ussually below 15* tranny fluid will thichen up enough to be reluctant to flow well. But if it has been a while since you have had new oil and filter installed this can help aleviate some of the slow shifting. Unless it is well below 0 it should not take a couple of miles for it to shift into OD. My Aero is starting to get finicky about shifting when it is below 0 so I will be taking it to a tranny shop for a flush n fill with a new filter. I think I'll have better luck at a shop that does trannies as opposed to a quickie service shop. If I had a garage I'd do it myself.
As far as block heaters these work very well, if they can be plugged into a switched outlet that allows you to get up in the morning and flip the heater on a half hour to hour before you leave. This will warm up the block and not kill you in utilities cost by leaving it on all night.
As far as block heaters these work very well, if they can be plugged into a switched outlet that allows you to get up in the morning and flip the heater on a half hour to hour before you leave. This will warm up the block and not kill you in utilities cost by leaving it on all night.
Postmaster
Joined: Mar 2001
Posts: 4,968
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From: So Cal
All three of my current vehicles do this, 2 Fords, 1 Chevy. They all wait longer to shift when they are cold. I even notice this during 50 degree nights when I startup in the morning.
All 3 will run at about 500RPM higher for about a mile or two at 50mph. Then they shift normally from then on.
Just my experience,
Jim Henderson
All 3 will run at about 500RPM higher for about a mile or two at 50mph. Then they shift normally from then on.
Just my experience,
Jim Henderson
Elder User
Joined: Aug 2003
Posts: 519
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From: New York
this happens to me all the time, i just take it easy, dont even go above 1600 rpm until its at the right running rpm for 4th. then i know OD is good to go. i never beat on my truck especially in winter, all those fuilds in the tranny, differentials, engine need to get warmed up sorta speak before layin the hammer down. kinda like humans who go to the gym. you warm up on the tread mill or bike before hittin the weights hard. yea i feel like an old man when i drive but whatever.
-bigdawg
-bigdawg
Posting Guru
Joined: Jun 2002
Posts: 1,067
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From: Central Illinois
Re: Auto trans shifting question
Originally posted by EFF250
I've noticed that the colder the temp the longer it takes to shift into OD. It actually dosen't shift until the trans temp gage begins to lift off the cold mark. By that time I'm already 2 miles down the highway. Has anybody else noticed this?
Thanks.
I've noticed that the colder the temp the longer it takes to shift into OD. It actually dosen't shift until the trans temp gage begins to lift off the cold mark. By that time I'm already 2 miles down the highway. Has anybody else noticed this?
Thanks.
