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At 20:37, he says that the cap adjusts the modulation pressure on a half turn only (0.2 bars). I did it, nothing better. Right now, on my car I think it is at 4.6 bars (instead of 4.4 bars).
My cap is not in a good state. Before to remove it again and to break it, I prefere to wait for my new modulation valve and its new cap.
Thank you for the videos but it looks like the RPMs are not increasing during the shift from 2nd to 3rd. What normally happens with a bad vacuum modulator or low pressure, is a monetarily increase RPMs while the shift happens. It looks like your RPMs don't increase like the typical phenomenon.
What happens ? B2 piston ?
The modulation valve is at the customs. I will have it today or tomorrow. I hope to plug it before the end of the week. We will see very soon now
What I also noticed is the huge RPM drop. I might be wrong but is it shifting into 3rd or directly into 4th?
I'll drive my car again on Friday and l'll check how it shifts.
What I also noticed is the huge RPM drop. I might be wrong but is it shifting into 3rd or directly into 4th?
I'll drive my car again on Friday and l'll check how it shifts.
Good question Shocki.
In level position 2, RPM increases but MPH doesn't increase.
In level position 3 and D, RPM increases but MPH doesn't increase before to shift in 3rd (or 4th).
If I remember, I feel the upshifts two times after 2nd. So I think it shifts first from 2nd to 3rd, and later from 3rd to 4th.
You're in 1st gear, when the selector is in 2 when stopped. You should feel a jolt when the transmission shifts into 2nd gear when you're driving.
That's why the factory decided to let the car roll off in 2nd gear normally.
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
09-11-2021, 05:31 AM
