transmission knock at low tempature

bugsbunny · 12-20-2007, 11:50 AM

i have a 07 titan crewcab
at -20c and cold start no warm up
after driving about 1 minute transmission knocks loudly
switching from 1 to 2 and 2 to 3
stops after trans warms up
anymone hear of this prob
it sounds like when you put the truck from reverse to drive with a bad universal
only louder

**HudsonValleyTitan** · 12-20-2007, 02:32 PM

How does a transmission knock? You're hearing something other than the transmission I believe.

**Carbeaux** · 12-20-2007, 02:34 PM

Quote:

Originally Posted by HudsonValleyTitan

How does a transmission knock? You're hearing something other than the transmission I believe.

Same question that popped into my mind as I read the thread title.

bugsbunny · 12-20-2007, 03:58 PM

Quote:

Originally Posted by HudsonValleyTitan

How does a transmission knock? You're hearing something other than the transmission I believe.

it sounds like when you put the truck from reverse to drive with a bad universal
only louder

bugsbunny · 12-20-2007, 03:59 PM

Quote:

Originally Posted by Carbeaux

Same question that popped into my mind as I read the thread title.

it sounds like when you put the truck from reverse to drive with a bad universal
only louder

Yahooligan · 12-20-2007, 04:10 PM

I hear trolls have a similar sound.

You really should let the truck warm up before you take off so you don't risk oil starvation due to excessively-thick oil. What weight oil do you have in your engine right now? You may want to try running Mobil 1 0w30 if these temps are common.

I would consider starting your truck and driving off at -4F/-20C without any warm-up to be abuse. Just don't do it.

Patient: It hurts when I bang my head against the wall. Do you have any advice?
Doctor: Don't bang you head against the wall.

Same applies here...first-poster.

daptech · 12-20-2007, 04:22 PM

don't have any idea.........how about a wild azz guess......jerky
torque converter lock-up at shift points.

**HudsonValleyTitan** · 12-20-2007, 05:08 PM

Quote:

Originally Posted by bugsbunny

it sounds like when you put the truck from reverse to drive with a bad universal
only louder

Unless you're shifting from D to R while driving, there's nothing in the tranny that makes such a sound. You're hearing something else. If this is for real, have the dealer check it. Doesn't sound good, nor can I believe it's that bad and you haven't gone to the dealer yet!

bugsbunny · 12-20-2007, 07:33 PM

Quote:

Originally Posted by HudsonValleyTitan

Unless you're shifting from D to R while driving, there's nothing in the tranny that makes such a sound. You're hearing something else. If this is for real, have the dealer check it. Doesn't sound good, nor can I believe it's that bad and you haven't gone to the dealer yet!

i was talking to the dealers son a while ago he said his is doing the same thing i am bringing it to be serviced in january
until then i will have the truck pluged in and letting it warm up
will let everyone know what i find!!

**HudsonValleyTitan** · 12-20-2007, 07:46 PM

Quote:

Originally Posted by bugsbunny

i was talking to the dealers son a while ago he said his is doing the same thing i am bringing it to be serviced in january
until then i will have the truck pluged in and letting it warm up
will let everyone know what i find!!

Nobodys saying you aren't hearing something. But either you're not describing it right, or it's not the transmission. Let us know what they find.