tampamax

How can I get the tranny to let me do the 1-2 and 2-3 shifts when I want? Someone has to know of a way to maually shift the auto before it starts to rev outside its power band.
Thanks in advance.

gtr_rider

iTrader: (50)

umm

Bags

iTrader: (3)

what power band is THAT???

What rpm do you want to shift at??

There are many ways to shift your auto.. takes time and practice

tampamax

I'm looking to get the car to shift at 5200-5500.

Please explain to me how to get the car to shift before 6,000. It doesn't matter if I start with the gear selector in 1st and try to bump the selector to 2nd the car will not shift until 6,000 rpms. Can I do something to get around that. The reason I ask this is because the car doesn't feel to be pulling at all after 5200rpm. I want to stay in as much of the torque curve 'before' it starts to fall off.

Sprint

iTrader: (10)

tampamax

I know, I know....I just feel the car runs out of breath and I feel it is keeping at least a half second off my 1/4 mile. Some informative feedback would be helpful though. Flame me I don't care. I just want to find a way to get the car to shift earlier.

Bags

iTrader: (3)

It will take practice, but lift of the throttle just before you want the shift. Not all the way, just 1/2. And the tranny will shift.

Again it takes practice to get it right. And this can be done in "D"

Dev

iTrader: (5)

just so you know...you won't achieve faster times by doing this, because as you are getting out of your power band at 6000rpm or whatever, when it shifts your rpms are going to be dropped below your power band...

anyhow, for your question, get off the throttle when you want it to shift, then get back on it.

again if you want to go faster, just floor it and let it shift, or even manually shift so it goes past the limiter.

Nismo87SE

That is easy. Design a circuit with external over ride controls to the shift soleniods. DBM posted all the info you need, but good luck finding it .

Lime

you mean this? (thread id=29949)

I imagine a person with good electronics "savvy" could do this for less than $25. My Maxima is a 5-speed so I can't do it.

This is "top of the head" (i.e. untested) engineering. My idea is to disconnect harness connector F42 and fashion a substitute electrical connector. Run the new harness into the passenger compartment. Mount a 5-position radio pushbutton switch to your homemade harness. The five buttons would control automatic gears 1, 2, 3, 4, and R.

Viewing the open end of connector F42 with the latch at the "12 o'clock" position you see two rows of four terminals. They are numbered 1-4 (left-to-right, top row) and 5-8 (left-to-right, bottom row). Terminal assignments are:
1 = Shift solenoid B
2 = Shift solenoid A
3 = Overrun clutch solenoid valve
4 = Line pressure solenoid valve
5 = Torque converter clutch solenoid valve
6 = ?
7 = ?
8 = ?

The question marks may be filled in by inspection of the connector and tests with an ohmmeter. One of them is for Reverse. The remaining one or two may be grounds.

The activation schedule for the solenoids is:
1st gear = A and B
2nd gear = B
3rd gear = (none)
4th gear = A

The Line valve solenoid would be energized if shift solenoid A, B, or both were energized, and de-powered during shifts.

I hope "Don in Texas" or other Maxima.Org members who know automatics will comment on this idea. Maybe it's whacko. Maybe it's do-able. Maybe it's not worth the trouble.

There is a link to i30's thing: http://forums.maxima.org/showthread.php?threadid=20627

deezo

iTrader: (3)

Glad to see someone else here knows what I've been telling some of these guys around here.

tampamax

I know about this method, but I wanted to fing out if there are any different methods without getting out of the gas.

deezo

iTrader: (3)

There aren't.

tampamax

Are you sure? Or is it that nobody has figured this one out. If only I were an engineer.