CVT "safety mode" issues + turbo kit???
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Joined: Mar 2008
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From: Las Vegas
Thats wierd. How did you know? Sometimes automatics with open diffs have a hard time keeping the power applied durring a turn. It feels likt the trans is doing nothing but really its just only able to deal with one wheel.
Not an expert, might could keep asking around.
Still wierd!
Scott 
Newbie
Joined: Jul 2007
Posts: 56
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From: Hackensack, NJ
Really? How did you do that? Where you able to recreate the issue? I go to the gym at 345 in the morning, empty streets, and I take turns (90 degree) at greater than 45 mph under acceleration. Never had that happen.
Thats wierd. How did you know? Sometimes automatics with open diffs have a hard time keeping the power applied durring a turn. It feels likt the trans is doing nothing but really its just only able to deal with one wheel.
Not an expert, might could keep asking around.
Still wierd!
Scott
Thats wierd. How did you know? Sometimes automatics with open diffs have a hard time keeping the power applied durring a turn. It feels likt the trans is doing nothing but really its just only able to deal with one wheel.
Not an expert, might could keep asking around.
Still wierd!
Scott i've taken turns at 65mph+ never had this happen to me
Evolving Member
Joined: Sep 2007
Posts: 282
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From: in my office
ive posted this problem in another section. i have grip springs and lightweight wheels and hi-p summer tires. (only mods)
yea i was making a left u-turn when it happened last, maxed out the cars turning ability (tires squeeling) but not enough to loose control just enough to loose grip maybee skid a inch or 2.
when i was pulling out of the turn at the end when i hit the gas the rpm just jumped to max (lucky it stops at 6k lol) and would not go like i was in neutral.
i let the rpm drop looked at the dash display it said it was in drive hit the gas same thing it just reved to max rpm but didnt go.
i shifted to sport mode then back and it went back to normal drive mode and worked fine all the way home on the freeway.
this is about the 5th time this has happened in different places doing different turns at different speeds.
ill take a video on my mobile phone next time it happens if i keep the car that long.
yea i was making a left u-turn when it happened last, maxed out the cars turning ability (tires squeeling) but not enough to loose control just enough to loose grip maybee skid a inch or 2.
when i was pulling out of the turn at the end when i hit the gas the rpm just jumped to max (lucky it stops at 6k lol) and would not go like i was in neutral.
i let the rpm drop looked at the dash display it said it was in drive hit the gas same thing it just reved to max rpm but didnt go.
i shifted to sport mode then back and it went back to normal drive mode and worked fine all the way home on the freeway.
this is about the 5th time this has happened in different places doing different turns at different speeds.
ill take a video on my mobile phone next time it happens if i keep the car that long.
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Evolved Member
Joined: Aug 2007
Posts: 633
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From: DC
Ive had the same happen as dsrttigr. You drive really hard out of a turn (Its happened to me while trying to floor it from a stand still ) and the CVT will release drive from 1st and revs will float out to 6k. The display will show D but your not going anywhere. You have to shift to sport and then back into D to get going again.
I have read that the Turbo for a CVT will only be possible while in sport mode in order to handle the power. The CVT has a "safety" feature that keeps it from being over worked.
You dont hear anything that sounds bad, it doesnt jerk or "crunch" on any gears, your hear nothing like a CVT belt slipping, it just seem to release drive and let the revs free. Its happened twice to me at the same turn and a third time somewhere else. It only happens while in D and under flat out accel in some type of heavier than normal load bearing situation. Ive never had it happen in a straight line or during any switchback racing.
The answer to a CVT turbo will have some type of ECU / CVT programming solution.
I have read that the Turbo for a CVT will only be possible while in sport mode in order to handle the power. The CVT has a "safety" feature that keeps it from being over worked.
You dont hear anything that sounds bad, it doesnt jerk or "crunch" on any gears, your hear nothing like a CVT belt slipping, it just seem to release drive and let the revs free. Its happened twice to me at the same turn and a third time somewhere else. It only happens while in D and under flat out accel in some type of heavier than normal load bearing situation. Ive never had it happen in a straight line or during any switchback racing.
The answer to a CVT turbo will have some type of ECU / CVT programming solution.
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Joined: Mar 2008
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From: Las Vegas
I think it would be ok in D boosted durring "Normal Driving Conditions"! Prob not and WOT operation happening safely in that mode. But really, who in here is driving really hard on the car in straigt D mode? Its not as fun as Sport!
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Joined: Mar 2008
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From: Las Vegas
The next time this happens, try and just hit the down shift paddle and see if it reacts! Just a little thing to try, but with so few of us having this happen, maybe should consult the dealership. sounds like isolated events!
Does suck though.
Does suck though.
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Joined: Apr 2008
Posts: 52
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From: Republic of Korea
after reading this post i purposely drove the living hell out of my car. in "D" and in sport mode. i have not encountered any of these problems. i dont know if mileage has anything to do with it (i highly doubt it) but my car only has 600 miles on it now. i will try again tonight on my way to work and see what happens
Thread Starter
Evolving Member
Joined: May 2007
Posts: 310
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From: usa
after reading this post i purposely drove the living hell out of my car. in "D" and in sport mode. i have not encountered any of these problems. i dont know if mileage has anything to do with it (i highly doubt it) but my car only has 600 miles on it now. i will try again tonight on my way to work and see what happens
i have rrm springs, lightweight wheels and hi-performance summer tires.
maybee the stock setup cant corner hard enough to reach the limit
