Workshop Manuals Factory service & repair Lancia
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Axles and driveshafts12 Brakes13 Steering14 Suspension and wheels15 Heating, air conditioning and auxiliary units16 Electrical equipment17 Body fittings18 Body panels and frame19 Wiring diagrams and electrical functions20 Wiring harnesses21 Connectors and pin-outs22 Fault diagnosis23 Service news bulletins24 Special tools
Lancia Thesis Factory Service Manual (2002-2009)22 · Fault diagnosis
22 · Diagnostics

Clutch slipping

Make
Lancia
Model
Thesis Factory Service Manual
Year
2002–2009
Section
Clutch › Clutch slipping
Fault diagnosisClutch slipping

CLUTCH SLIPPING

2.0 TB, 2.4 20V, 2.4 JTD 10V, 2.4 JTD 20V

During acceleration there is a consisten increase in the engine revs without a corresponding increase in speed

STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
0PRELIMINARY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the engine running, press the clutch pedal and engage 4th gear. Accelerate and gradually release the clutch pedal, checking that the engine revs not increase during this manoeuvre whilst the vehicle remains stationary.Move on to StepThe vehicle does not move and the engine revs increaseMove on to Step
1CLUTCH - FLYWHEEL ASSEMBLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION

Check the following, in order:

  • clucth plate wear
  • clutch plate fouling
  • no distortion of the clutch plate
  • condition of the diaphragm spring
  • condition of the flywheel (in particular the state of the surface, uneven wear, signs of overheating)
Move on to Step1. Disc worn

1. Replace the assembly

See in Op. 1810A20 CLUTCH - R.R.

2. Disc fouled with oil or grease

2. Replace the clutch plate, clean the assembly, eliminate the oil leaks

See in Op. 1810A24 CLUTCH - R.R. with gearbox removed

3. Disc distorted

3. Replace the assembly

See in Op. 1810A24 CLUTCH - R.R. with gearbox removed

4. Spring broken

4. Replace the assembly

See in Op. 1810A24 CLUTCH - R.R. with gearbox removed

5. Flywheel scored, worn or overheated

5. Replace the flywheel

See in Op. 1024B22 ENGINE FLYWHEEL - R.R. with clutch removed for versions with manual gearbox

2CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer present

Parts & tools for this job For 2002 Lancia Thesis

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.