G2 Idle Speed Control Valve Hose - 1990-92 - 1.8

This idle speed control valve hose connects the idle stabilisation valve to the angled T-piece on the air intake pipe on 1.8 GTI Digifant engines. The hose is an important part of the idle control system, allowing metered air to pass between the intake system and the idle control valve so the engine can maintain a steady idle speed under different loads and temperatures.

Over time, these hoses often split, harden or become loose, which can cause air leaks and lead to common running issues such as hunting idle, high idle, stalling, poor cold starting or erratic engine speed. Because this hose sits within the intake system, any air leak here is unmetered air, which affects the air-fuel mixture and idle stability. Replacing this hose restores the correct airflow to the idle stabilisation system and helps the engine idle smoothly and consistently.

This hose is a direct replacement for the original and is ideal when servicing the intake system, replacing the idle control valve, or fixing vacuum and idle related running problems on Digifant engines.

What This Part Does / How It Works

This hose allows air to flow between the intake pipe and the idle speed control valve. The idle valve adjusts airflow to maintain a steady idle speed when the engine is cold, when electrical loads are applied, or when the engine returns to idle after acceleration.

Other Parts That May Be Required

• Idle speed control valve
• Angled T-piece connector
• Intake boot / air intake hose
• Hose clips
• Vacuum hoses
• Throttle body gasket

Vehicle Fitment Summary

VW Golf Mk2 GTI – 1990–1992 – 1.8 Digifant – Engine codes PB, PF, RV
VW Jetta Mk2 – 1990–1992 – 1.8 Digifant – Engine codes PB, PF, RV

Engine Codes

PB – 1.8 Digifant
PF – 1.8 Digifant
RV – 1.8 Digifant