My friend says that on newer cars that there is a possibility of electronically adjusting the transmission's gear ratio. Does anyone know of this? I'm not talking about CVT though he could be, I don't think he'd be dumb enough to confuse it but what ever. Does anyone know what he is talking about? I was under the impression that gear ratios in the transmission are fixed and that in order to change them you would need to rebuild it. Maybe he was talking about at what speed the transmission changes gears? I wanted to know because I was disappointed that once I reach 45MPH my RPMs stay at a constant 1500rpms all the way up to 55mph, after that they'll then climb. I'm asking about this because if I can get more torque out of the engine, I theoretically should be able to use lower gear ratios.
I also wanted to know if anyone was aware that when the break pedal is depressed, the RPMs drop and when it's released it climbs. Say the RPMs are at 1000rpm when creeping, when I press the brake, they drop down to 500rpm. I want to know how and why when I'm coasting (yes I'm coasting in gear) the RPMs regardless of how fast or slow I'm "coasting" won't go down to 500 unless I press the brake. Is there some way to tell the engine to allow idling at 500RPM? Also is anyone aware of this issue where if you're going above 20mph, say 45mph and let off the gas, the truck will slow down quite quickly as if engine braking and then once it hits 20mph, it will then coast? The only way to get past this is to shift into neutral and then shift back into D in order for it to coast and I was wondering why this happens. This is the only vehicle that I can think of where letting go the gas will cause it to slow down rather quickly, as if engine braking but then when it gets to 20mph, it sort of disengages and coasts from there.
I also wanted to know if anyone was aware that when the break pedal is depressed, the RPMs drop and when it's released it climbs. Say the RPMs are at 1000rpm when creeping, when I press the brake, they drop down to 500rpm. I want to know how and why when I'm coasting (yes I'm coasting in gear) the RPMs regardless of how fast or slow I'm "coasting" won't go down to 500 unless I press the brake. Is there some way to tell the engine to allow idling at 500RPM? Also is anyone aware of this issue where if you're going above 20mph, say 45mph and let off the gas, the truck will slow down quite quickly as if engine braking and then once it hits 20mph, it will then coast? The only way to get past this is to shift into neutral and then shift back into D in order for it to coast and I was wondering why this happens. This is the only vehicle that I can think of where letting go the gas will cause it to slow down rather quickly, as if engine braking but then when it gets to 20mph, it sort of disengages and coasts from there.
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