I just hooked up my PWM valve and it hums back at me. It is a honda valve from a b16a1. If I increase the frequency the hum is less audible. How do I figure out what frequency my valve works at? Is huming bad? Can the wrong setting kill my valve?
/Carl
my PWM idle valve hums
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: my PWM idle valve hums
Try around 400 Hz. If the frequency is too far off it will make a fair amount of noise.
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dirtytorque
- MegaSquirt Newbie
- Posts: 7
- Joined: Sun Feb 24, 2008 12:22 pm
Re: my PWM idle valve hums
pwm valves hum.
MSII Rev 2.88600
Board type is version 3.0
Fitted to a
1992 Volkswagen Corrado g60.
0.9 bar.
Board type is version 3.0
Fitted to a
1992 Volkswagen Corrado g60.
0.9 bar.
Re: my PWM idle valve hums
Thanks! I'll give it a go this weekend.
/Carl
/Carl
Re: my PWM idle valve hums
400 Hz seems impossible since you can only put the multiplier to 8 x 30,5. But it is a lot quieter at that setting!
Now all I got to do is get a good signal from my VR sensor and then I am going to try to start this thing
/Carl
Now all I got to do is get a good signal from my VR sensor and then I am going to try to start this thing
/Carl
Re: my PWM idle valve hums
Sounds like you're getting close Carl! 
Where was your PWM idle valve located? I'm building MSIIv3.0 for my '97 Audi A4 Quattro 1.8 turbo. I can't find my idle valve, nor can I find what it even looks like...
Where was your PWM idle valve located? I'm building MSIIv3.0 for my '97 Audi A4 Quattro 1.8 turbo. I can't find my idle valve, nor can I find what it even looks like...