Hello everyone I'm new on your site and I have a little problem with my skoda octavia I have problems with the tachometer needle fluctuation ... I changed the throttle with one second and nothing has changed

 

Hi Teddyedd and welcome to Briskoda.

 

It would be worth posting your problem in the Octy I section, where it would receive more specialised attention.  I'm sure one of the Octy I experts will be able to help you.

Moving to Octy 1 section...

Do you have the 1.8T?

 

Mine has the exact same problem with fluctuation.

 

- I've had the System Lean fault code before. I'm pretty sure it's down to leaking vacuum pipes/system on my car. Check these things since they're common faults on the Octavia:

 

I would start with the Y-pipe (crankcase breather pipe) under the engine cover.

 

17544/P1136/004406 - Fuel Trim: Bank 1 (Add): System too Lean

Possible Solutions

• Check Mass Air Flow (MAF) Sensor
• Check Fuel Pressure Regulator
• Check Fuel Pump
• Check Intake/Exhaust System for Leaks
• Check Secondary Air Injection for Leaks
• Check Vacuum Lines for Leaks

Special Notes

• Fuel Trim Info
• When this fault is stored and external vacuum leaks are not found, less obvious problems may be present:
• Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
• Check Brake Booster and Hoses
• Check Electric Vacuum Pump ( If Applicable )
• Check Crankcase Ventilation System for faulty components. When the PCV or Crankcase Ventilation System is faulty, vacuum is typically present under the oil cap and misfire faults are common.