The car pounds into 2nd around 15 mph even with very mild acceleration. Shift points are within spec. I read this is caused by the 1-2 accumulator spring - is this true or could there be something else? Trans fluid pressure is within spec, and TV cable is adjusted fine.
Some shift kits and aftermarket Servo's recommend removing the accumulator spring and Servo Cushion spring. Not a good idea especially if a stock converter or mildly modified stall converter is used.
Does a stiffer spring make it shift harder or viceversa? Could something be stuck or is that unlikely?
A shift kit was on the rebuild invoice (I didn't get it done) - may be previous owner wanted hard shift or something messed up since I got it (I didn't drive it much, but don't remember it being like this).
I read related links and saw broken 1-2 accumulator springs are common. Would that cause hard shifts? I assume it's like having no spring, but still not sure if a stiffer or softer spring causes hard shifts.
The trans invoice says "HS convertor" so it's not stock, but from what I read, that should make it shift softer.
This describes it well
"If you have a stock or close to stock tight converter using the stiffer springs/deleting accumulators will cause very harsh shifting even at minimum throttle angles."
I don't understand stall convertor theory - if they don't grab until 2500-3000 rpm, it seems the car would sit there until that engine speed - mine doesn't, it moves as soon as throttle is opened, and even at 1800 rpm will bang into second.
I read related links and saw broken 1-2 accumulator springs are common. Would that cause hard shifts? I assume it's like having no spring, but still not sure if a stiffer or softer spring causes hard shifts.
The trans invoice says "HS convertor" so it's not stock, but from what I read, that should make it shift softer.
This describes it well
"If you have a stock or close to stock tight converter using the stiffer springs/deleting accumulators will cause very harsh shifting even at minimum throttle angles."
I don't understand stall convertor theory - if they don't grab until 2500-3000 rpm, it seems the car would sit there until that engine speed - mine doesn't, it moves as soon as throttle is opened, and even at 1800 rpm will bang into second.
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