92 3.0 tranny issue
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Senior User
Joined: Dec 2003
Posts: 157
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From: staten island
92 3.0 tranny issue
It seems I have to warm the truck up for a while for the trans to shift into drive or reverse, especially in this cold weather. New filter and fluid have helped but when the truck is cold, the tranny may be erratic. What do you guys think.
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 208
From: SoCal
I'm just guessing here, since I haven't studied exactly how automatic transmissions work. You put the shift lever into drive (or reverse), it moves some valves inside the valve body, and some fluid pressurizes against something (servo diaphragm?) to engage a clutch pack or a band brake. One of those parts that are supposed to move is getting sluggish when it's cold, so maybe it's stiffening up more than it should be with the cold temperatures. I am guessing a rubber diaphragm. Either that, or water got into places where it shouldn't be, and it's freezing and jamming up some parts.
I'm seeing a lot more reports of problems exacerbated by the cold weather, even on this forum. To those who live in the colder climates, does this winter seem more extreme to you than before? I write this as I enjoy the second day in a row of 80 degree weather here in SoCal.
I'm seeing a lot more reports of problems exacerbated by the cold weather, even on this forum. To those who live in the colder climates, does this winter seem more extreme to you than before? I write this as I enjoy the second day in a row of 80 degree weather here in SoCal.
Laughing Gas
Joined: Oct 2005
Posts: 1,226
Likes: 42
From: The OC
I'm sorry but the air conditioner is on here in Anaheim and I can't hear myself think. Must be at least 78 degrees out. Oops, sorry about that.
Anyway, I just rebuilt mine and it was easier than I thought. Just takes a little time because it was "1 thing after another" when it came to the hard parts. I think your shifting issues may be coming from your valve body. Just do a full fluid flush and filter change and you might get lucky. Also, check for fluid from your modulator line at the manifold, but let the van run for a few minutes to suck the fluid up (if any).
Anyway, I just rebuilt mine and it was easier than I thought. Just takes a little time because it was "1 thing after another" when it came to the hard parts. I think your shifting issues may be coming from your valve body. Just do a full fluid flush and filter change and you might get lucky. Also, check for fluid from your modulator line at the manifold, but let the van run for a few minutes to suck the fluid up (if any).
Postmaster
Joined: Sep 2003
Posts: 4,452
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From: Southern California
Originally Posted by xlt4wd90
I write this as I enjoy the second day in a row of 80 degree weather here in SoCal.
Originally Posted by lv2race
I'm sorry but the air conditioner is on here in Anaheim and I can't hear myself think. Must be at least 78 degrees out.
P.S. I't in the mid 70s again today
