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Old 12-08-2008, 11:08 AM   #1
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Default GM boost solenoid failures? (please chime in)

After 1.5 years I think my GM boost solenoid is starting to fail. It first started a few weeks ago when the weather turned colder - IAT's sub 32F. Now it's starting to get flaky even when it warms up.

Failure mode is in the open/non-energized position so it's just running on wastegate.

I have it mounted on the firewall on the coldside so it shouldn't be due to heat death, especially with vents all over the place.

How reliable have these been for other people?
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Old 12-08-2008, 11:29 AM   #2
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I killed one testing a different EBC.


just replace it with this:
Item # 310-12VDC, Humphrey 310/410 Direct Acting Solenoids Cv=0.14 on Air, Inc.
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Old 12-08-2008, 11:40 AM   #3
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Quote:
Originally Posted by Braineack View Post
I killed one testing a different EBC.


just replace it with this:
Item # 310-12VDC, Humphrey 310/410 Direct Acting Solenoids Cv=0.14 on Air, Inc.

Thanks! Just ordered it, $29.54 shipped.
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Old 12-08-2008, 01:19 PM   #4
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I wish people would just not use the GM solenoid piece of ****,it cost roughly the same as a solenoid that's 1000x better,yet some still want to use it.
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Old 12-09-2008, 05:37 AM   #5
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Quote:
Originally Posted by spike View Post
I wish people would just not use the GM solenoid piece of ****,it cost roughly the same as a solenoid that's 1000x better,yet some still want to use it.
If there was some kind of writeup on how to install another solenoid other than the GM i would be down.
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Old 12-09-2008, 05:41 AM   #6
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manual boost controller ftw
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Old 12-09-2008, 09:27 AM   #7
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Quote:
Originally Posted by 18psi View Post
manual boost controller ftw
On the old MX-6 GT I ran an mbc and a solenoid (pulled from the emissions rats nest on an 84 RX-7) to get two stage boost control.

It's really nice to have more boost control to match power to the amount of traction. The current setup is an on/off switch to run wastegate or ebc. When the ebc is enabled a big **** on the dash(under the radio) controls boost from 10psi up to whatever ever I want. Recently added a push button that momentarily makes it run on wastegate to reduce wheelspin when launching.

The ball/spring mbc works great but I like having more control. Electronics are good!
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Old 12-09-2008, 09:43 AM   #8
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Not sure why you guys are seeing so many failures with the GM BCS. Suby guys have been using it as a replacement since '05 without these problems.

Braine's BCS looks like the Grainer/ARO unit:

Pneumatics & Hydraulics > Valves > Solenoid Air Control Valves > Valve,Solenoid,1/8 In : Grainger Industrial Supply

Just cheaper.

Frank
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Old 12-09-2008, 10:03 AM   #9
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Quote:
Originally Posted by fmowry View Post
Braine's BCS looks like the Grainer/ARO unit:
I use the Grainer ARO unit personally...It's what came with the LINK. The unit I posted above is identical in every way....
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Old 12-09-2008, 10:07 AM   #10
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Quote:
Originally Posted by jobambo View Post
If there was some kind of writeup on how to install another solenoid other than the GM i would be down.

It installs just as the GM solenoid would.





The black vacuum hose comes into the valve from the turbo. (bottom port labeled EXH)

The blue hose out to the wastegate. (middle port labeled OUT)

Hook one wire to a 12v constant.

Hook the other to the MS output.
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Old 12-09-2008, 11:08 AM   #11
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Quote:
Originally Posted by Braineack View Post
I killed one testing a different EBC.


just replace it with this:
Item # 310-12VDC, Humphrey 310/410 Direct Acting Solenoids Cv=0.14 on Air, Inc.
Has this been added to the archive?
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Old 04-27-2015, 01:11 PM   #12
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Those who have had valve failures, can you chime in? Mine appears to open and close as required, but I'm not sure if its holding completely shut under boost. Thanks!
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