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Bucking on rapid CVT "gear" reduction.

29 views 3 replies 3 participants last post by  Seyren  
#1 ·
My Caliber 2.4L R/T witn 240_000 km started kicking when accelerating.

When I drive let's say 100km/h and slowly accelerate to 120km/h everything is smooth.
But when I press gas more rapidly and CVT must reduce ratio quickly there is like kick in the back feeling.
It does NOT feel like belt slip, no sudden slowdown or RPM spike.

Engine purrs consistently like a fat cat. No audible issues. So i don't think this is for example throttle body related.
CVT had fluid+filters changed 30_000 km ago.
Fluid is present, I compared level with temperature chart and it looks OK.
Fluid is clear yellow-greenish color, no burn, no contamination, no steel shavings.

Note 1: Car was always bucking when switching from P to D or R.
Note 2: CVT was serviced at 35_000 km intervals but I never spared it while driving and did "pedal to the metal" from time to time :)

Is my CVT demanding long awaited rest in peace?
Or could it be for example only worn torque converter lock-up disengaging too late/early?
 
#3 ·
I don't think CV joints are the issue. Failing axle clunks when letting off the brake. Or rattle when wheels are turned. I haven't observed any of those.

I've notices bucking when accelerating this weekend. Car will go to tranny workshop anyway so I it will be diagnosed. I was just curious if anyone observed exactly the same symptoms and what was the fix.