2020年11月15日 · In Layman’s terms, the N249 is a valve solenoid that is connected to the intake vacuum source to the back of the diverter valve (DV) and it controls the boost signal to the DV telling it when to open. Essentially it is a part that is there …

2008年4月1日 · On AWD/AWW/AWP engines the N249 valve has three connections : One going to the DV, one to the intake manifold for reference, and one to the vacuum reservoir (And the electrical connection of course.) I don't understand why your N249 is tied in to the charge pipe before the throttle body?

2005年4月8日 · N249 is controlling the DV (Dump Valve). It is installed between the intake vacuum source and DV itself. When no current is switched to the N249 (default state), the DV will get vacuum or boost from the intake manifold.

2004年3月2日 · The N249 valve is a solenoid, and is a different piece alltogether,.....but it is connected to the DV via a vac./boost hose. The DV and N249 are two different parts, on different sides of the engine.

2011年5月25日 · The N249 valve controls the opening of the diverter valves under certain part throttle conditions where the ECU thinks the intake track requires recirculation.

2013年10月10日 · The issue: The N249 will activate and engage during pre-spool/off boost. This is fine if you have a regular diverter valve, but if you have a splitter valve, it creates a gaping hole in your charge pipe at part throttle (off boost).

2013年12月27日 · The N249 and DV's primary function is to bleed off the pressure that's being created/ manipulated by the turbo, WG, and n75. The byproduct of the N249 and DV's primary function-which is to bleed the boost off as quickly and efficiently as possible-is that it "regulates" the pressure in the charge pipes.

2012年5月14日 · N249 = Diverter Valve (solenoid) At idle, this opens to recirculate compressed air back into turbo to prevent build-up and surge (between shifts). N75 = Wastegate (solenoid) Controls wastegate inside turbo to reduce exhaust side pressure which then drops impeller speed, effectively reducing boost to a acceptable level (requested by the ECU)

2016年1月10日 · There are two solenoid valves located in the vacuum system (N112/N249), one enables the diverter valve to open (N249), typically when the engine is at idle or when changing gears to re-direct unused boost pressure, while the other (N112) allows the EGR, or combi valve, to open during cruising speed for increased fuel economy and lowered emissions.

Both Pierburg and genuine OEM MKIV Jetta 1.8T N249 Diverter Valve Control Solenoids are available from ECS - eliminate unnecessary pressure loss and check engine lights with this simple replacement part.