Downshifting

[Power Hungry]

Thanks, Jack. I'm glad those help.

Yeah, I had to change MPG to Economy for those crazy guys up north! All that metric stuff is SOOO confusing.

Anyway, keep us posted and if we need to make any more revisions, let me know.

[Mark_123]

I've noticed too how the tq conv unlocks easily when slightly letting of the gas to coast down a small slope. Then when you slightly press the gas pedal, the rpms are too high for the current speed for a few seconds. I find this strange too.

[chappy]

I think the TC unlocking and locking with the gas pedal being let up is a Ford thing I believe.Pretty sure I read a thing once that Bill posted about it.Its real noticable with my PSD.

[Jackpine]

Originally Posted by Mark_123

I've noticed too how the tq conv unlocks easily when slightly letting of the gas to coast down a small slope. Then when you slightly press the gas pedal, the rpms are too high for the current speed for a few seconds. I find this strange too.

It's irritating, isn't it? Feels to me like the transmission's doing way too much work and that can't be good for its overall life. I wonder if this is the "funny" torque control Bill has talked about previously? I don't remember other posts along this line, chappy, so maybe that's what you're referring to.

- Jack

[Power Hungry]

The TC unlocking when letting off the throttle is a means to thy to help improve fuel economy by letting the engine RPM drop down during coasting. I know it may seem a little "busy", but it's actually better in the long run because it takes negative load off the engine and transmission. The only thing it's not good for is if you need engine braking, although a gasser isn't going to be good for that anyway.

For what it's worth, we've reduced the amount of time for the converter to relock and all that we ended up with was the infamous "shudder" on tip-in on certain vehicles. What's irritating is it doesn't do it on every vehicle.

One thing that has been requested was to allow more throttle/load before the converter unlocks, particularly in those situation where you're going across an overpass or up a slight grade. I am addressing those requests and as soon we get something that we feel comfortable with, we can get include that in the tuning. It's tricky getting the right combination of converter hold going up a small hill versus quick release for passing or accelerating.

Let me know if you have any other questions.

Take care.

[Jackpine]

Originally Posted by JackandJanet

Interesting that unlocking on coast is easier on the transmission. Having grown up in mountain areas, I'm a big fan of engine braking and will do it anytime I'm coming down a mountain. So far, haven't had any transmission failures.

Good to know though that you are still looking into the throttle/load to unlock point though.

- Jack

Interesting that unlocking on coast is easier on the transmission. Having grown up in mountain areas, I'm a big fan of engine braking and will do it anytime I'm coming down a mountain. So far, haven't had any transmission failures.

Good to know though that you are still looking into the throttle/load to unlock point though.

- Jack

[Power Hungry]

Hey, I drive these things, too! It's a little frustrating getting around Chattanooga and having the converter unlock going up a measly 4% grade. Sat and watched my mileage going down the tubes for like 5 miles. Even a sizable overpass is annoying.

Don't worry, we'll get that nonsense straightened out.

[Jackpine]

Originally Posted by Power Hungry

Hey, I drive these things, too! It's a little frustrating getting around Chattanooga and having the converter unlock going up a measly 4% grade. Sat and watched my mileage going down the tubes for like 5 miles. Even a sizable overpass is annoying.

Don't worry, we'll get that nonsense straightened out.

Cool! I know you're talking about exactly what I'm complaining about! Glad to know I'm not the only one who doesn't like this and that I'm not or :dunce:

- Jack