Transmission slip from reverse to drive
- Thread starter mason4runner
- Start date
Well, it was in the lower 40's this morning when I left the house to go to work. I kicked it into neutral after backing out of the driveway as I was still rolling backwards. A second or two later after I stopped, I then put it into drive and there was no hesitation. It was very positive and was ready to go right off the bat.
Now I wonder what causes the 'slip' only when cold after it's been sitting for several hours.
Ricky
Now I wonder what causes the 'slip' only when cold after it's been sitting for several hours.
Ricky
Iowa4Runner
New member
RickyCRX said:
There's something weird about using reverse in cold weather.
If reverse isn't involved, I don't experience the problem. Shifting from P straight to D is fine. If you use reverse and then spend a couple seconds in N (or P) before engaging D, it's fine. But... Shifting from P to R and then right to D, I get the hesitation. Even if I sit there and idle in P for a full minute (prior to using R), the P-R-D sequence stills gives me the hesitation. Very strange...
I've been paying more attention to this lately, and it's exactly as you described. As long as I stop in N for a couple of seconds (even if I'm still rolling backwards into the street from my driveway), then put it in D when I come to a stop, it doesn't do it. I'm curious to see if it does it when the ambient temps are warmer in the spring/summer like when I bought my 4Runner (where the temps are in the mid-70s in the mornings)....
For now, I just do the little 'workaround' of waiting a second of two in N before going to D...
Ricky
For now, I just do the little 'workaround' of waiting a second of two in N before going to D...
Ricky
Iowa4Runner
New member
RickyCRX said:
Yeah I guess it's just another quirk we have to live with. Using reverse somehow sets up the transmission up for a hesitation, but neutral undoes this. Very odd.
Between this issue and the loose washer noise I hear in 4th gear, I'm really getting curious about the inner workings of these transmissions. Maybe I should go to a junkyard and find a wrecked one to go to school on. Ha, like I've got time for that.
The next issue cold weather issue I'm having is piston slap. Hopefully it isn't as bad as GM owners have experienced. I can't wait to see what an oil analysis reveals...
Iowa4Runner said:
I've heard a little bit of a 'knocking' first thing in the mornings when pulling away from backing out of my driveway when it's been colder... I'm not too concerned with it, as I normally just take it REALLY easy on my engine around this time (it never shifts over 1500rpm when I'm warming it up gently). From the noises I used to put up with owning a 4.3L GM V6 in a Blazer, the little tapping/knocking noise I hear from this engine when it's really cold out doesn't bother me in the slightest.
These are supposed to be some of the best engines in the world (The 4.7l Toyota V8), so I'm not too concerned with the longevity of it. I should be able to get 250-300k out of it easily.
Ricky
I had a similar problem. I have a 2005 V8 4wd with 6400 miles on it. Last weekend I was in a driveway with a decent incline, put the car in reverse. I came to a stop in the driveway (still on the hill) and put the car in drive. It sounded like someone grinding gears with a stick shift. I had to put the car in reverse and back out to level ground before going forward. I was able to repeat this once but not since.
That sounds like something different than what we're talking about it. There's no grinding going on when mine does it. It's just a small 'bump' as the tranny takes a couple extra seconds to fully engage drive. Yours sounds like the traction control/hill start assist system working together to prevent the vehicle from rolling backwards on the hill you were on.... That's perfectly normal operation of the system.
Ricky
Ricky
Bluto
New member
RickyCRX said:
Good chance your exhaust manifold(s) is leaking. Check on Tundra forums ... tons of 'knock' posts. My brother's Tundra does it. His oil analysis is perfect.
Is the R to D 'slip' more of a 'hesitation'? Have to remember you don't control the tranny, the computer does. There is a bunch of conditions the ECT wants before it shifts. You could have a sensor or two operating operating on the fringes of the acceptable range. Convincing Toyota to replace them may be a challenge.
