|
|
|
#1
|
|||
|
|||
Inclines and automatics.
Hi,
I have started driving the old girl a bit now after 30 years of no go. I am ironing out various things, most everything is working fine. I have never owned a car with an auto 'box before, so I am learning a few things..but I have a specific question..the car is in my sig, but it is an M116 engine 3.5 (1971) with whatever box that came with... If I am on an uphill incline, steep or not, with the car in drive (or 4 as marked), and I have to come to a stop, the car will roll back. Is that normal? If not, is there anything I can do about it? Thanks. Dave
__________________
1971 W111 280se rhd coupe (The Duchess) 1959 Bristol 406 (Monty) 1970 Volvo Amazon 131 (Lola) Lives in Cornwall, UK. |
#2
|
||||
|
||||
Yes, 100% normal. All cars with automatics that don't have hill start assist do it, just not as badly as a manual trans would if you don't keep on the brake. If you're on a really steep hill, you might consider using two feet.
__________________
Current: 2021 Charger Scat Pack Widebody "Sinabee" 2018 Durango R/T Previous: 1972 280SE 4.5 2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi" 1999 Chrysler 300M - RIP @ 221k |
#3
|
|||
|
|||
Quote:
The 'box is a 722.2xx. The roll-back is normal; the 722.2, when brought to a halt, stops in 2nd gear, and hence less engine torque is applied to the driveline than if stopped in 1st gear. As soon as the throttle pedal is moved to start off, the 'box shifts to 1st. That shift from 2nd to 1st can usually be felt as a slight bump, if one is paying attention and opens the throttle slowly. |
#4
|
|||
|
|||
Alright Thanks for the quick replies.
So I can stop worrying about trying to fix that then. On another note, why would a downshift be more abrupt than an upshift? It's all relative of course..upshifts are super smooth, hence I notice some downshifts more.. d
__________________
1971 W111 280se rhd coupe (The Duchess) 1959 Bristol 406 (Monty) 1970 Volvo Amazon 131 (Lola) Lives in Cornwall, UK. |
#5
|
|||
|
|||
transmission shifts
New here, hello to all,have been with Porsche forum for years.
911 is just sold,just purchased a 230SL, on its way from US im a Kiwi living in Australia.Will always try to be helpful on here. Dave when you drive a very high hill at lower speed ,just select it back to low on your auto box that will also help ,as you move forward,move your selector back up to 4th. As you mentioned with transmission smooth going up ,going down not so smooth, that is normal,unless it is really bad,then get it checked.regards.Wayne. |
#6
|
|||
|
|||
It's likely the throttle switch. This is part of the modulator solenoid on top of your transmission and if it's not set up correctly you will get a very pronounced clunk as your trans shifts from 3rd to 2nd gear while coming to a stop.
In many cases the actual solenoid is sized up and would need to be removed so it can be lubed and freed up. You can easily check to see if it's working by turning on your ignition and hitting your gas pedal until it pushes up against the kick down switch. You should hear an audible click if it's working. If not, check your fuses and whether you have power at the kick down switch. Once you have your kick down linkage working you can then adjust the throttle switch so that a test light will go out just after you open the throttle. This will ensure that with your foot off of your throttle the kick down linkage should move to the rear position which will soften any down shifts. |
#7
|
|||
|
|||
BD:
You have described a transmission that is not installed in the OP's car. His is in the next series/design of transmissions; the 722.0/1/2 series. His a 722.2xx. |
#8
|
|||
|
|||
Quote:
I generally never post about cars I don't work on or things I don't know about. Sorry if I jumped to a different question. |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|