'94 VW Jetta III - clutch ''slipping''

Shift interlock is only used with auto trans. Do you mean the clutch start safety switch? What is the problem you are having.

The electronics in the auto and manual cars are different (and complex)and it is not just a matter of pulling out the auto and installing a manual box and clutch as you would in a car from the 1970s.
You will have numerous problems if you attempt the install like this.
You would need a box from a 2002 model and you would need to change the ECU and wiring harness and numerous other items also from the 2002 model..

Most likely its your transmission slipping You will need to have it checked by a mechanic if the rpm is double then it has nothing to do with the turbo, if it's a automatic it means the clutches are slipping or if it's a standard it means the clutch is slipping from being worn out or the pressure plate is wore out.

Well the is no such thing as a shift bearing associated with a VW Jetta. Alot of VW 020 5 speeds won't let it shift into first gear until you are going under ten miles an hour or so. I don't know if it's a design feature so you won't put it in first at a high speed and over rev the motor, or what for sure. I have a Scirocco 16v and a Jetta GLI 16v, all have the same transmission as the 1993-98 Jetta, they both do the same thing. Does the shifter lever have any "play" in it? There are a few bushings for the shifter and the linkage going to the transmission, that do wear out and will cause it to be hard to shift into gear.

Adding Stop slip to a manual transmission with not keep your clutch from slipping. Replace or adjust the clutch.

it is in the centre of the flywheel where the front of the input shaft of the gearbox locates

4 speed use 3.2 pts 5 speed uses 4.2 pts. look on the sides where axles is for a plug.

LUBRICANTS & FLUIDS
Engine Oil
Grade 1......API*
100% Synthetic 0W-20 Motor Oil
SAE 5W-20 XL Synthetic Motor Oil
SAE 0W-30 Synthetic Signature Series Oil
Above 9°F......15W-40
Above 0°F......10W-30
Above 19°F......20W-50
All Temps......5W-20
Manual Transmission,.....GL-4
75W-90
Synthetic Manual Transmission and Transaxle Gear Lube 75W-90
Automatic Transmission,4 Speed AT.....SLF[1]
Synthetic Automatic Transmission Fluid
Fluids
Power Steering Fluid.....PS
AMSOIL Universal Synthetic Power Steering Fluid
Brake Fluid.....HB
Series 500 High Performance DOT 3 Brake Fluid
Clutch Fluid.....HB
Series 500 High Performance DOT 3 Brake Fluid

1. Kia automatic transmission fluid, SP-III.


PLEASE DON'T FORGET TO RATE!!!!!

Hi
there is no overdrive buttone in VW.
Seems like you need new clutch.

hi from uk if as you say clutch slips in high gear ie engine revs are not compared to speed you should be doing ? then i am afraid that considering age and probable high milage of car the cars clutch is on its last legs and rqs renew not a difficult or long job to do on jetta but for the moment try not to drive car too much as it will/may fail completely no drive! then you will incurre breakdown/recovery charge ? a stich in time ? saves nine ? hope this helps you?