Torque Converter lock up speed and engine's rpm

  • Thread starter Pantelis Giamarellos
  • Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
P

Pantelis Giamarellos

Guest
A fellow lister has enquired about the lock up speed and engine's rpm range
for the torque converter's locking up.

Browsing through the pages of the workshop manual of Discovery Series 1
(1989 - 1994) model year 3.9 vehicles I found that they quote a speed of
51 - 54 mph and 1875 -2000 rpm .

Unlock at 49 - 52 mph and 1825 - 1930 rpm.

Always with gear selector in D

There is a note quoting that the above numbers are approximate and only
intended as a guide though.

Above figures for the 200Tdi engine Discos is

Lock 46 - 49 mpg at 1600 - 1850 rpm
Unlock 45 - 48 mpg at 1700 - 1800 rpm.

HTH

Take care
Pantelis


 
Back
Top