Transmission strategies

[Peterofdevon]

Hi Guys,

I have a new 94 that I'm sorting out. Its so minty inside and so quiet to drive.

The transmission does dont shift as clean and sharp as my 93 (power flushed last yearf). But, my 93 has an intermittent very once in a while refusal to shift into first gear. I am about to sell the 93 but I wanted to sort out the 94 to see if anything major was wrong to parts swap.

Questions:

1) does the 93 box fit a 94?2) what would cause the 93 transmission to miss first gear?3) would you swap them?

Thanks and Let me know your ideas,

Peter

[Jeff Williams]

the 90 through 92 models started out in second gear. In 93, Infiniti changed to a first gear start. The 94 transmission has different gears, and shift points. The shifting was much smoother as well. Some use the 93 TCU in the later models.

[Q45denver]

Try moving your 1994 TCU over to the 1993 and see how it shifts. I believe they are straight swaps but the labor cost to switch them may be prohibitive.

[elwesso]

Try moving your 1994 TCU over to the 1993 and see how it shifts. I believe they are straight swaps but the labor cost to switch them may be prohibitive.

if your juts talking about teh TCU the labor only takes about 5minutes

[Rex]

if your juts talking about teh TCU the labor only takes about 5minutes

I'm pretty sure he was talking about swapping the trannies between two cars.

[RobertsnewQ]

early 93s have the 90-92 (lower) first gear, late 93s have the 94-96 (higher) first gear.

[Q451990]

Is your intermittant problem in the 93 related to temperature? Specifically, when it's cold outside, and the car hasn't fully warmed up?

If so, it may be normal. At least on the 90 with the stock TCU, it is designed to not allow manual downshifting to 1st until everything is warmed up. I haven't noticed if the 93 TCU locks out 1st gear start until warmed or not - I usually let the car warm up to operating temperature before driving now...

Heath