To avoid a big drop in rpm and frequent engine stall situation when the ac compressor engages I want to extra allow air into the engine via a 12v air valve when the compressor turns on. My car came with two emissions related valves that control the venting of the fuel vapors from the charcoal canister, but I found that the valves would not open against the engine vacuum at idle. I need something like a 12v idle valve. What is the cheapest item I could find to do the job? Are there egr valves that are controlled by 12v? I'll limit the amount of air using an external adjustment valve of some sort.
Thanks.
valve to allow air into maifold when AC compressor engages
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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
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valve to allow air into maifold when AC compressor engages
90 VW 16v Jetta - MSnS-Extra, current msq, setup, and pics http://www.msruns.com/viewtopic.php?t=22406
Do you have a throttle body with an arm sticking out that could be pushed against?
If so, look for an anti-diesel solenoid off a 70's GM with a V8. It's a very short throw solenoid that has a 100% duty cycle (you can leave it on all the time!).
Hook it up to the A/C control line, so that each time the compressor cycles, it simply bumps the throttle up (the opposite of it's intended use!).
Low tech... but.....
If so, look for an anti-diesel solenoid off a 70's GM with a V8. It's a very short throw solenoid that has a 100% duty cycle (you can leave it on all the time!).
Hook it up to the A/C control line, so that each time the compressor cycles, it simply bumps the throttle up (the opposite of it's intended use!).
Low tech... but.....
haha, that is a barbarian type of solution. I may as well find a small animal that could survive underhood to do something like this 
just kidding of course, but i think I ran across some infomation on fast idle valves that gives an example of parts that could be used.
http://www.megamanual.com/ms2/IAC.htm#fidle
just kidding of course, but i think I ran across some infomation on fast idle valves that gives an example of parts that could be used.
http://www.megamanual.com/ms2/IAC.htm#fidle
90 VW 16v Jetta - MSnS-Extra, current msq, setup, and pics http://www.msruns.com/viewtopic.php?t=22406