Rattling Noises.

· #9 · Aug 19, 2009.

. Symptoms DISA Valve Failure: Rough Driving; Loss of power; Poor fuel economy; Loud rattle sound (most important as other symptoms are common with multiple other issues) DISA Valve Repair: https://amzn.

The valve is constantly fed 12 volts during normal throttle operation and then open circuits on higher RPM and throttle opening.

Sep 27, 2008 · ThreeFinger.

. Apr 26, 2012 · The DISA valve is located in the inlet plenum chamber and controls the variable length intake manifold giving better torque at low revs by closing, keeping the intake runner long. .


-----2AA9 Variable Intake System conversion 2 - Vanos related. . At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else.

Sep 27, 2008 · ThreeFinger. When the flap is closed , this creates another "dynamic" effect.


Aug 15, 2021 · Use a plastic trim removal tool to carefully pry the DISA valve out of the manifold.

ImportCar Magazine:. When it fails it can lead to a rough idle, reduced performance and.

Here are some of the most common symptoms you will experience with a faulty BMW DISA valve: Rattling Noise The DISA valve is a plastic flap inside your car’s intake manifold. Figure 1 The DISA valve is located on the left side of the intake manifold, in the center (green arrow).

looks like I have a new project for tomorrow, pull manifold.
1st DISA is a newly rebuilt unit with a malfunctioning motor.
BMW has installed DISA valves across a wide range of engines.

You may have codes for car running lean or rich if your DISA valve is not working correctly plus other symptoms as well.


. · #2 · Sep 9, 2010. .

ECS Tuning has the OE BMW valve for ~$190. . com plus other unique perks and benefits:ht. . This article gives detailed instructions on replacing the DISA valves in a BMW vehicle with the N52 6 cylinder engine. This explains the occasional rough idle I was experiencing.

Intake manifold is free in FSP, so I'm looking for any little gains out there.

. I actually went as far as buying all the gaskets to do the VANOS seal replacement until I realized it was the DISA making the noise.

And dangit, way to resurrect the dead.

After higher engine speeds, it opens up and makes the intake runners shorter for more horsepower.

Appreciate 0 Quote 10-14-2013, 12:13 AM #18: mike3000fl.

Aug 15, 2021 · This article gives detailed instructions on replacing the DISA valves in a BMW vehicle with the N52 6 cylinder engine.